Custom Metal Manufacturing Company

Types of custom metal manufacturing company

Custom metal manufacturing companies are businesses that specialize in the production of metal products that are tailored to the specific needs of their clients. These companies use various techniques and processes to create custom metal products that are unique and functional. Here are some of the types of custom metal manufacturing companies:

1. Sheet Metal Fabrication Companies: These companies specialize in the production of sheet metal products such as metal enclosures, cabinets, and panels. They use cutting, bending, and welding techniques to create custom sheet metal products that are used in various industries.

2. CNC Machining Companies: These companies use computer numerical control (CNC) machines to create custom metal parts and components. They can produce complex shapes and designs with high precision and accuracy.

3. Metal Casting Companies: These companies use casting techniques to create custom metal products such as gears, valves, and other components. They use molds to create the desired shape and then pour molten metal into the mold to create the final product.

4. Welding and Fabrication Companies: These companies specialize in welding and fabrication services for various industries. They use welding techniques such as MIG, TIG, and stick welding to create custom metal products such as frames, structures, and machinery.

5. Metal Stamping Companies: These companies use stamping techniques to create custom metal products such as brackets, clips, and other components. They use presses to stamp the metal into the desired shape and size.

In conclusion, custom metal manufacturing companies offer a wide range of services and products to meet the specific needs of their clients. They use various techniques and processes to create custom metal products that are unique, functional, and of high quality.

Pros and Cons of Using custom metal manufacturing company

Custom metal manufacturing companies offer a range of benefits to businesses that require metal fabrication services. However, there are also some potential drawbacks to consider. Here are some of the pros and cons of using a custom metal manufacturing company:

Pros:

1. Customization: One of the biggest advantages of using a custom metal manufacturing company is the ability to customize your products to meet your specific needs. These companies can create unique designs and shapes that are tailored to your requirements.

2. Quality: Custom metal manufacturing companies typically use high-quality materials and employ skilled craftsmen to ensure that their products are of the highest quality. This means that you can expect your products to be durable and long-lasting.

3. Cost-effective: While custom metal manufacturing can be more expensive than off-the-shelf products, it can also be more cost-effective in the long run. Custom products are often designed to be more efficient and effective, which can save you money on maintenance and repairs over time.

4. Flexibility: Custom metal manufacturing companies can work with a variety of materials, including steel, aluminum, and copper. This means that they can create products for a wide range of industries and applications.

Cons:

1. Lead times: Custom metal manufacturing can take longer than purchasing off-the-shelf products. This is because the design and fabrication process can be time-consuming, especially for complex products.

2. Cost: Custom metal manufacturing can be more expensive than purchasing off-the-shelf products. This is because the design and fabrication process requires specialized skills and equipment.

3. Communication: Working with a custom metal manufacturing company requires clear communication and collaboration. If there are any misunderstandings or miscommunications, it can lead to delays and errors in the final product.

4. Quality control: While custom metal manufacturing companies strive to produce high-quality products, there is always a risk of defects or errors. This is why it is important to work with a reputable company that has a strong quality control process in place.

In conclusion, using a custom metal manufacturing company can offer many benefits, including customization, quality, cost-effectiveness, and flexibility. However, there are also potential drawbacks to consider, such as lead times, cost, communication, and quality control. It is important to weigh these pros and cons carefully when deciding whether to work with a custom metal manufacturing company.

custom metal manufacturing company Reference Specifications (varies for different product)

As a custom metal manufacturing company, we specialize in producing a wide range of metal products to meet the unique needs of our clients. Our reference specifications vary depending on the product being manufactured, but we always strive to meet the highest quality standards in the industry.

For our sheet metal products, we typically use materials such as stainless steel, aluminum, and galvanized steel. We can produce sheets in various thicknesses and sizes, with finishes ranging from polished to matte. Our sheet metal products are often used in the construction industry for roofing, siding, and other applications.

For our precision machined parts, we use a variety of materials including steel, aluminum, brass, and copper. Our CNC machines allow us to produce parts with tight tolerances and complex geometries, ensuring a precise fit and function. These parts are often used in the automotive, aerospace, and medical industries.

In addition to sheet metal and precision machined parts, we also offer custom metal fabrication services. This includes welding, bending, and forming of various metals to create unique products tailored to our clients’ specific needs. Our fabrication capabilities allow us to produce everything from simple brackets to complex assemblies.

Overall, our reference specifications are tailored to each individual project, ensuring that we meet the unique requirements of our clients. We are committed to providing high-quality metal products and services that meet or exceed industry standards, and we take pride in our ability to deliver custom solutions that meet our clients’ needs.

Applications of custom metal manufacturing company and Type of Companies use custom metal manufacturing company

Custom metal manufacturing companies are essential in the production of metal products that meet specific customer requirements. These companies provide a range of services, including design, fabrication, and finishing of metal products. The following are some of the applications of custom metal manufacturing companies:

1. Aerospace and Defense Industry: Custom metal manufacturing companies are used in the production of aircraft parts, missiles, and other defense-related products. These companies use advanced technologies to produce high-quality metal products that meet the strict requirements of the aerospace and defense industry.

2. Automotive Industry: Custom metal manufacturing companies are used in the production of automotive parts, such as engine components, chassis, and body parts. These companies use advanced technologies to produce high-quality metal products that meet the strict requirements of the automotive industry.

3. Medical Industry: Custom metal manufacturing companies are used in the production of medical equipment, such as surgical instruments, implants, and diagnostic tools. These companies use advanced technologies to produce high-quality metal products that meet the strict requirements of the medical industry.

4. Construction Industry: Custom metal manufacturing companies are used in the production of construction materials, such as steel beams, columns, and trusses. These companies use advanced technologies to produce high-quality metal products that meet the strict requirements of the construction industry.

5. Electronics Industry: Custom metal manufacturing companies are used in the production of electronic components, such as computer parts, mobile phone parts, and other electronic devices. These companies use advanced technologies to produce high-quality metal products that meet the strict requirements of the electronics industry.

In conclusion, custom metal manufacturing companies are essential in the production of metal products that meet specific customer requirements. These companies are used in various industries, including aerospace and defense, automotive, medical, construction, and electronics industries. These industries rely on custom metal manufacturing companies to produce high-quality metal products that meet their strict requirements.

Quality Testing Methods for custom metal manufacturing company and Work Process Use custom metal manufacturing company

Quality testing is an essential aspect of custom metal manufacturing. It ensures that the products meet the required standards and specifications. There are several quality testing methods that a custom metal manufacturing company can use to ensure that their products are of high quality.

One of the quality testing methods is visual inspection. This involves visually examining the product to ensure that it meets the required specifications. The inspector checks for any defects, such as cracks, scratches, or dents. Visual inspection is a quick and easy way to identify any defects in the product.

Another quality testing method is dimensional inspection. This involves measuring the product to ensure that it meets the required dimensions. The inspector uses precision measuring tools, such as micrometers and calipers, to measure the product’s length, width, and height. Dimensional inspection ensures that the product is the correct size and shape.

A third quality testing method is destructive testing. This involves testing the product to failure to determine its strength and durability. The inspector applies a load to the product until it breaks, and then measures the load at which the product failed. Destructive testing is useful for determining the product’s maximum load capacity.

The work process of a custom metal manufacturing company involves several steps, including design, fabrication, and finishing. The design process involves creating a blueprint or drawing of the product. The fabrication process involves cutting, bending, and welding the metal to create the product. The finishing process involves painting, polishing, or coating the product to protect it from corrosion.

To ensure that the work process is efficient and effective, the custom metal manufacturing company should use a quality management system. This system should include procedures for quality testing, documentation, and corrective action. The company should also train its employees on the quality management system to ensure that they understand their roles and responsibilities.

In conclusion, quality testing is an essential aspect of custom metal manufacturing. The custom metal manufacturing company should use visual inspection, dimensional inspection, and destructive testing to ensure that their products meet the required standards and specifications. The company should also use a quality management system to ensure that the work process is efficient and effective.

Comprehensive Analysis of custom metal manufacturing company Costs: Including Visible and Hidden Costs

Custom metal manufacturing companies incur various costs in their operations. These costs can be categorized into visible and hidden costs. Visible costs are those that are easily identifiable and can be directly attributed to the production process. Examples of visible costs include raw material costs, labor costs, and overhead costs such as rent, utilities, and insurance.

On the other hand, hidden costs are those that are not easily identifiable and may not be directly attributed to the production process. Examples of hidden costs include maintenance costs, quality control costs, and waste disposal costs. These costs can have a significant impact on the profitability of the company if not properly managed.

Raw material costs are one of the most significant visible costs for custom metal manufacturing companies. The cost of raw materials such as steel, aluminum, and copper can fluctuate depending on market conditions. Labor costs are another significant visible cost, as skilled workers are required to operate the machinery and equipment used in the production process.

Overhead costs such as rent, utilities, and insurance are also significant visible costs for custom metal manufacturing companies. These costs can vary depending on the location and size of the company.

Maintenance costs are a significant hidden cost for custom metal manufacturing companies. Regular maintenance of machinery and equipment is necessary to ensure optimal performance and prevent breakdowns. Quality control costs are also a hidden cost, as ensuring that products meet customer specifications requires additional testing and inspection.

Waste disposal costs are another hidden cost for custom metal manufacturing companies. The disposal of scrap metal and other waste materials can be costly, and companies must comply with environmental regulations when disposing of these materials.

In conclusion, custom metal manufacturing companies incur various visible and hidden costs in their operations. Proper management of these costs is essential to ensure profitability and sustainability in the long run.

Payment Terms for custom metal manufacturing company and Bulk Purchase Discounts and Price Variances Among Suppliers

As a custom metal manufacturing company, we understand the importance of establishing clear payment terms with our clients. We typically require a deposit upfront to cover the cost of materials and labor, with the remaining balance due upon completion of the project. We accept various forms of payment, including credit cards, checks, and wire transfers.

In addition to our payment terms, we also offer bulk purchase discounts for clients who order large quantities of our products. These discounts vary depending on the size of the order and the specific product being purchased. We believe that offering bulk purchase discounts is a great way to incentivize our clients to order more from us, while also helping them save money in the process.

When it comes to working with suppliers, we understand that there may be price variances among different vendors. We always strive to work with suppliers who offer competitive pricing without sacrificing quality. We also believe in building strong relationships with our suppliers, which can help us negotiate better pricing and terms in the long run.

Overall, we believe that establishing clear payment terms, offering bulk purchase discounts, and working with reliable suppliers are all key components of running a successful custom metal manufacturing company. We are committed to providing our clients with high-quality products and services at fair prices, and we will continue to work hard to earn their trust and loyalty.

Chinese Regulations and Industry Standards Certifications for custom metal manufacturing company

In China, custom metal manufacturing companies are required to comply with various regulations and industry standards certifications to ensure the quality and safety of their products. Some of the key regulations and certifications include:

1. ISO 9001: This certification ensures that the company has a quality management system in place that meets international standards.

2. ISO 14001: This certification ensures that the company has an environmental management system in place that meets international standards.

3. OHSAS 18001: This certification ensures that the company has an occupational health and safety management system in place that meets international standards.

4. RoHS: This regulation restricts the use of certain hazardous substances in electrical and electronic equipment.

5. REACH: This regulation restricts the use of certain hazardous substances in products sold in the European Union.

6. CE: This certification indicates that the product meets certain safety, health, and environmental protection standards in the European Union.

7. UL: This certification indicates that the product meets certain safety standards in the United States.

Custom metal manufacturing companies must ensure that their products meet these regulations and certifications to be able to sell their products in international markets. Failure to comply with these regulations and certifications can result in legal and financial consequences, as well as damage to the company’s reputation. Therefore, it is important for custom metal manufacturing companies to stay up-to-date with the latest regulations and certifications and ensure that their products meet these standards.

Navigating Import Regulations and Customs for custom metal manufacturing company from China

When importing custom metal products from China, it is important to understand the import regulations and customs procedures to avoid any delays or additional costs. Here are some key steps to follow:

1. Obtain necessary permits and licenses: Before importing, ensure that you have all the necessary permits and licenses required by your country’s customs and regulatory authorities.

2. Determine the HS code: The Harmonized System (HS) code is a standardized system used to classify goods for import and export. Determine the HS code for your custom metal products to ensure compliance with import regulations.

3. Choose a reliable freight forwarder: A freight forwarder can help you navigate the customs procedures and ensure that your products are delivered on time and in good condition.

4. Prepare shipping documents: Ensure that all shipping documents, including the commercial invoice, packing list, and bill of lading, are accurate and complete.

5. Pay import duties and taxes: Import duties and taxes may apply to your custom metal products. Consult with a customs broker or freight forwarder to determine the applicable fees and ensure that they are paid on time.

6. Inspect the products: Upon arrival, inspect the custom metal products to ensure that they meet your specifications and are in good condition.

By following these steps, you can navigate the import regulations and customs procedures for your custom metal manufacturing company from China and ensure a smooth and successful import process.

Procurement and Considerations when Purchasing custom metal manufacturing company

Procurement is the process of acquiring goods or services from an external source. When purchasing from a custom metal manufacturing company, there are several considerations that need to be taken into account. These include:

1. Quality: The quality of the products produced by the custom metal manufacturing company is of utmost importance. The products should meet the required specifications and standards.

2. Cost: The cost of the products should be reasonable and competitive. It is important to compare prices from different suppliers to ensure that you are getting the best value for your money.

3. Delivery time: The delivery time of the products should be reasonable and should be communicated clearly by the supplier. Late deliveries can cause delays in your project and can be costly.

4. Customer service: The supplier should have good customer service and be responsive to your needs. They should be able to answer your questions and provide you with the necessary support.

5. Experience: The supplier should have experience in the industry and should be able to provide you with references and examples of their work.

6. Capacity: The supplier should have the capacity to meet your requirements. This includes the ability to produce the required quantity of products within the required timeframe.

7. Sustainability: The supplier should have sustainable practices in place, such as using environmentally friendly materials and processes.

In conclusion, when purchasing from a custom metal manufacturing company, it is important to consider the quality, cost, delivery time, customer service, experience, capacity, and sustainability of the supplier. By taking these factors into account, you can ensure that you are getting the best value for your money and that your project will be completed on time and to the required specifications.

Sourcing custom metal manufacturing company from China: Opportunities, Risks, and Key Players

China has become a hub for custom metal manufacturing due to its low labor costs, advanced technology, and vast experience in the industry. The country offers numerous opportunities for businesses looking to source custom metal manufacturing services, including cost savings, access to a wide range of materials, and high-quality products.

However, sourcing from China also comes with risks, including language barriers, cultural differences, and quality control issues. It is crucial to work with a reputable and experienced metal manufacturing company to mitigate these risks and ensure that the products meet the required standards.

Some of the key players in the Chinese custom metal manufacturing industry include Foxron Precision Metal Parts Co., Ltd., Dongguan Shengjia Hardware Products Co., Ltd., and Shenzhen Runze Hardware Technology Co., Ltd. These companies have a proven track record of delivering high-quality products and services to clients worldwide.

In conclusion, sourcing custom metal manufacturing services from China can be a lucrative opportunity for businesses looking to reduce costs and access a wide range of materials. However, it is essential to work with a reputable and experienced company to mitigate risks and ensure that the products meet the required standards.

Cultivating Successful Business Relationships with Chinese custom metal manufacturing company Suppliers

When it comes to doing business with Chinese custom metal manufacturing companies, building and maintaining successful relationships is crucial. Here are some tips to help cultivate successful business relationships with Chinese suppliers:

1. Communication: Communication is key to building successful business relationships. It is important to establish clear lines of communication with your Chinese supplier and ensure that both parties understand each other’s expectations and requirements.

2. Respect: Respect is an important aspect of Chinese culture. Showing respect for your Chinese supplier’s culture, customs, and traditions can go a long way in building a successful business relationship.

3. Trust: Trust is essential in any business relationship. It is important to establish trust with your Chinese supplier by being honest, transparent, and reliable.

4. Face-to-face meetings: Face-to-face meetings can help build trust and establish a personal connection with your Chinese supplier. If possible, try to visit your supplier in China to strengthen your relationship.

5. Patience: Doing business in China can be challenging, and it may take time to build a successful relationship with your Chinese supplier. Patience is key, and it is important to be persistent and consistent in your communication and interactions with your supplier.

By following these tips, you can cultivate successful business relationships with Chinese custom metal manufacturing companies and ensure a smooth and productive partnership.

Sustainability and Environmental Considerations in custom metal manufacturing company Manufacturing

Custom metal manufacturing companies have a significant impact on the environment due to their use of natural resources, energy consumption, and waste generation. Therefore, it is essential for these companies to consider sustainability and environmental factors in their operations.

One way to achieve sustainability is by using eco-friendly materials and processes. For instance, using recycled metal instead of virgin metal reduces the demand for natural resources and minimizes waste. Additionally, implementing energy-efficient technologies such as LED lighting, solar panels, and energy-efficient machinery can reduce energy consumption and greenhouse gas emissions.

Another critical consideration is waste management. Custom metal manufacturing companies should implement waste reduction strategies such as recycling, reusing, and repurposing materials. They should also ensure proper disposal of hazardous waste to prevent environmental pollution.

Furthermore, companies can adopt sustainable practices by promoting environmental awareness among their employees and customers. This can be achieved through training programs, environmental policies, and communication campaigns.

In conclusion, sustainability and environmental considerations are crucial in custom metal manufacturing companies. By adopting eco-friendly materials and processes, implementing energy-efficient technologies, managing waste, and promoting environmental awareness, these companies can reduce their environmental impact and contribute to a sustainable future.

The Evolution and Market Trends in custom metal manufacturing company Industry

The custom metal manufacturing industry has undergone significant evolution and market trends in recent years. The industry has seen a shift towards more advanced technologies, such as 3D printing, laser cutting, and CNC machining, which have improved efficiency and accuracy in the production process. The use of these technologies has also enabled manufacturers to produce more complex and intricate designs, which has increased demand for custom metal products.

Another trend in the industry is the adoption of sustainable practices. Many custom metal manufacturers are now using eco-friendly materials and processes to reduce their carbon footprint and meet the growing demand for environmentally conscious products. This trend has been driven by consumer demand for sustainable products and the need to comply with government regulations.

The industry has also seen a rise in the use of automation and robotics in the production process. This has led to increased efficiency, reduced labor costs, and improved product quality. Automation has also enabled manufacturers to produce custom metal products in larger quantities, which has increased their competitiveness in the market.

In terms of market trends, the custom metal manufacturing industry has experienced significant growth in recent years. This growth has been driven by increased demand from various industries, including aerospace, automotive, construction, and healthcare. The industry has also benefited from the growth of e-commerce, which has made it easier for manufacturers to reach a wider customer base.

Overall, the custom metal manufacturing industry is expected to continue to evolve and grow in the coming years. The adoption of advanced technologies, sustainable practices, and automation will continue to drive efficiency and innovation in the industry, while increasing demand from various industries and e-commerce will fuel growth.

The Role of Agents and Sourcing Companies in Facilitating custom metal manufacturing company Purchases from China

Agents and sourcing companies play a crucial role in facilitating custom metal manufacturing company purchases from China. These entities act as intermediaries between the buyer and the supplier, helping to bridge the gap in language, culture, and business practices.

One of the primary functions of agents and sourcing companies is to identify suitable suppliers for the custom metal manufacturing company. They have extensive networks and knowledge of the Chinese market, which enables them to find the right suppliers that meet the buyer’s specifications and requirements.

Agents and sourcing companies also help to negotiate prices and terms of the purchase agreement on behalf of the buyer. They have experience in dealing with Chinese suppliers and understand the local business practices, which enables them to secure favorable terms for the buyer.

Another critical role of agents and sourcing companies is to manage the production process and ensure that the custom metal manufacturing company’s order is delivered on time and to the required quality standards. They act as a liaison between the buyer and the supplier, providing regular updates on the production process and addressing any issues that may arise.

Agents and sourcing companies also provide logistical support, including arranging for shipping and handling customs clearance procedures. They ensure that the products are delivered to the buyer’s location in a timely and cost-effective manner.

In summary, agents and sourcing companies are essential partners for custom metal manufacturing companies looking to purchase from China. They provide valuable support in identifying suitable suppliers, negotiating favorable terms, managing the production process, and ensuring timely delivery of the products.

How to use import and export data website importyeti.com to search the company and custom metal manufacturing company

ImportYeti.com is a website that allows users to search for companies and their import and export data. To search for a custom metal manufacturing company, follow these steps:

1. Go to ImportYeti.com and create an account if you haven’t already.

2. Click on the “Search” tab at the top of the page.

3. In the “Company Name” field, type in “custom metal manufacturing” and select “All” in the “Country” field.

4. Click on the “Search” button.

5. The search results will show a list of companies that match the search criteria. You can click on each company to view their import and export data.

6. To refine the search results, you can use the filters on the left-hand side of the page. For example, you can filter by country, product, or shipment date.

7. Once you have found a company that you are interested in, you can click on the “View Details” button to see more information about their import and export activity.

Using ImportYeti.com to search for a custom metal manufacturing company can help you find potential suppliers or competitors in the industry. By analyzing their import and export data, you can gain insights into their business operations, such as their product offerings, shipping routes, and trade partners. With this information, you can make informed decisions about your own business strategy and stay ahead of the competition.

How to use Chinese Business Search Platform: qcc.com to check custom metal manufacturing company company credit

Qcc.com is a Chinese business search platform that provides information on various companies in China. To check the credit of a custom metal manufacturing company, follow these steps:

1. Go to qcc.com and enter the name of the company in the search bar.

2. Once you find the company, click on its name to view its profile.

3. The profile will provide information on the company’s registered capital, business scope, legal representative, and other details.

4. To check the company’s credit, scroll down to the bottom of the page and click on the “Credit Report” tab.

5. The credit report will provide information on the company’s credit rating, credit limit, overdue payments, and other financial information.

6. You can also view the company’s business license, tax registration certificate, and other relevant documents by clicking on the “Documents” tab.

7. If you have any doubts or questions about the company’s credit, you can contact qcc.com’s customer service for further assistance.

In conclusion, qcc.com is a useful tool for checking the credit of custom metal manufacturing companies in China. By following the above steps, you can easily access important information about the company’s financial status and make informed decisions about doing business with them.

Overcoming Challenges and Facilitation of Sourcing custom metal manufacturing company from China

Sourcing custom metal manufacturing companies from China can be a challenging task due to language barriers, cultural differences, and lack of transparency in the supply chain. However, with the right approach, these challenges can be overcome, and the process can be facilitated.

One way to overcome language barriers is to work with a sourcing agent or a third-party logistics provider who can act as a liaison between the buyer and the supplier. This can help ensure that communication is clear and that both parties understand each other’s needs and expectations.

Cultural differences can also be a challenge when sourcing from China. It is important to understand the cultural norms and business practices in China to avoid misunderstandings and build strong relationships with suppliers. Building trust and rapport with suppliers is crucial in Chinese business culture, and it can take time and effort to establish these relationships.

Transparency in the supply chain can also be a challenge when sourcing from China. It is important to conduct due diligence on potential suppliers to ensure that they are reputable and have a track record of delivering quality products. This can involve visiting the supplier’s facilities, conducting background checks, and verifying certifications and licenses.

In conclusion, sourcing custom metal manufacturing companies from China can be a challenging task, but with the right approach, these challenges can be overcome. Working with a sourcing agent, understanding cultural differences, and conducting due diligence on potential suppliers can help facilitate the process and ensure that the buyer receives high-quality products at a competitive price.

FAQs on Sourcing and Manufacturing custom metal manufacturing company in China

1. Why should I consider sourcing and manufacturing from a custom metal manufacturing company in China?

China is known for its cost-effective manufacturing capabilities, making it an attractive option for businesses looking to reduce their production costs. Additionally, China has a vast network of suppliers and manufacturers, making it easier to find the right partner for your specific needs.

2. How do I find a reliable custom metal manufacturing company in China?

Research is key when it comes to finding a reliable manufacturing partner in China. Look for companies with a proven track record, positive reviews, and certifications such as ISO 9001. It’s also important to communicate clearly with potential partners and visit their facilities in person if possible.

3. What types of metal products can be manufactured in China?

China has a wide range of capabilities when it comes to metal manufacturing, including sheet metal fabrication, CNC machining, casting, forging, and stamping. Products that can be manufactured include metal enclosures, brackets, frames, and components for various industries such as automotive, aerospace, and electronics.

4. How can I ensure the quality of my products when manufacturing in China?

Quality control is crucial when manufacturing in China. It’s important to establish clear quality standards and specifications, conduct regular inspections, and work with a partner that has a strong quality management system in place. It’s also recommended to work with a third-party inspection company to ensure the quality of your products.

5. What are the lead times for manufacturing in China?

Lead times can vary depending on the complexity of the product and the manufacturing process. However, China’s efficient manufacturing capabilities can often result in shorter lead times compared to other countries. It’s important to communicate clearly with your manufacturing partner and establish realistic timelines for your project.

custom metal manufacturing company