Steel and Aluminum Coil from a Leading Bay Area Metal Supply Company
Reliance Metalcenter is a Bay Area steel supply company with its service center located in Union City, CA. We deliver high-quality steel and aluminum coil to businesses across northern California, northern Nevada, and Mexico, with additional shipping capabilities to Korea, Japan, Taiwan, and China. As a steel and aluminum supply company for the Bay Area, we help manufacturers, fabricators, and OEMs stay on schedule with the right material, ready to go.
As a division of a leading US metal supply company with global reach, Reliance Metalcenter brings large-scale resources to local industries. Our Union City facility supports a wide range of sectors, including construction, automotive, transportation, aerospace, electronics, and energy. Our role as a metals distributor, metals processor, and metal supply partner allows us to support everything from small fabrication shops to major industrial suppliers.

Stainless Steel Coil for Demanding Environments
We supply coil from recognized stainless steel coil manufacturers, with inventory ready for fast turnaround. Our most requested grade, 316 stainless steel coil, performs exceptionally in high-moisture, high-corrosion settings. Common applications include:
- Marine equipment
- Food processing and packaging
- Medical devices and pharmaceutical systems
- Chemical handling and storage
As a stainless steel coil supplier, we provide this material in a range of gauges and widths to suit your production needs. 316 stainless steel offers excellent chemical resistance and mechanical stability, making it a preferred material for clients requiring reliability in tough environments. As a Bay Area metal supply company, we keep it in stock so you can keep moving.
Carbon Steel Coil Options: Strength, Formability, and Availability
Our inventory includes cold-rolled carbon steel coil and standard carbon coils sourced through trusted carbon steel coil suppliers. These materials are widely used in manufacturing, construction, and fabrication industries due to their strength, affordability, and formability. Typical uses include:
- Building and infrastructure components
- Automotive parts and chassis
- Industrial machinery
- Agricultural equipment
Cold-rolled coil offers a smooth surface and tighter tolerances, making it suitable for precision fabrication. As a steel company with decades of experience in coil distribution, we match product to application without delay.
Galvanized Steel Coil for Outdoor and Structural Use
Our galvanized steel coil suppliers provide coated steel that is ideal for outdoor exposure and structural performance. Galvanized coil is treated with a zinc layer that protects the base steel from corrosion, making it a smart long-term choice for harsh environments. Applications include:
- Roofing and siding systems
- HVAC and ducting
- Framing and support structures
- Trailer bodies and enclosures
This material delivers extended service life with little maintenance. We stock galvanized coil in various thicknesses and offer custom sizes through our in-house processing services.
Lightweight, Reliable Aluminum Coil Supply
As a Bay Area steel and aluminum metal supply company, we support industries that require lighter-weight, corrosion-resistant materials. Our aluminum coil stock includes 5052 and 3003 aluminum coil, a widely used alloy known for its strength and weldability. Typical applications for 5052 and 3003 aluminum coil include:
- Marine and transportation systems
- Pressure vessels and tanks
- Electronic enclosures
- Architectural paneling
In addition to 5052 and 3003, we supply aluminum coil stock in multiple finishes and gauges for signage, lighting, HVAC, and more. We also recommend trying our thermalized aluminum coil for the best flatness in the market. We work directly with aluminum coil suppliers to maintain a steady inventory that meets your volume and turnaround goals.
Precision Coil Processing Services On-Site
We’re not just a supplier. Working with us means you’re counting on a metal services company and metals processor offering coil customization directly from our Union City location. Our metal processing services are designed to streamline your operation and minimize material waste. Capabilities include:
- Coil slitting to exact width requirements
- Shearing and cut-to-length services
- Blanking to meet part production needs
- Packaging for efficient handling and transport
As a steel distributor serving customers throughout northern California and northern Nevada, our value extends beyond material availability. We offer processing that helps reduce your internal workload and shorten your production cycle.
Industries We Serve Across the Region
Reliance Metalcenter is a steel and aluminum metal supply company for northern California, northern Nevada, and Mexico, with additional distribution support to Korea, Japan, Taiwan, and China. As a steel and aluminum metal supply company for northern Nevada, we serve fast-growing areas including Reno and surrounding industrial zones.
We are also a steel and aluminum metal supply company for Korea and China, supporting international buyers who rely on consistent coil quality and reliable export logistics. We also operate as a steel and aluminum metal supply company for Japan, meeting the coil sourcing needs of industrial buyers across multiple sectors. As a steel and aluminum metal supply company for Taiwan, we support export orders that require consistent quality, documentation, and efficient transit.
Across northern California, we continue to be recognized among the top steel suppliers in northern California, with a focus on fast lead times and personalized service.
Our customers span a wide range of sectors, including:
- Coil slitting to exact width requirements
- Automotive manufacturing
- Aerospace and defense
- General fabrication
- Infrastructure and public works
- Renewable energy
- Food and pharmaceutical processing
Clients choose us for our regional logistics advantage, high-volume inventory, and responsive service. As the key Bay Area steel suppliers, we are positioned to support the fast-changing needs of modern manufacturers.
Why Work with Reliance Metalcenter
We are more than a materials source. Our team combines the scale of a national steel distributor with the responsiveness of a regional supplier. We support our customers with:
- Large, ready-to-ship inventory
- Local delivery to Bay Area and NorCal facilities
- On-site processing to match your production specs
- Reliable supply partnerships with global mills
As a steel and aluminum metal supply company for Mexico and surrounding markets, we know how to move material efficiently across borders. With repeat customers making up the majority of our business, we take pride in being a dependable part of our clients’ supply chains.
A Supply Chain Built on Precision and Performance
You might be sourcing 5052 aluminum coil for transportation equipment or 316 stainless steel coil for cleanroom production. You may need carbon coils or galvanized coils for outdoor assemblies. Reliance Metalcenter is ready to deliver, with the quality, consistency, and speed your operation depends on.
From first request to final shipment, we help you source smarter, move faster, and reduce production delays.
Let’s Talk About Your Coil Supply Needs
From carbon coils for industrial machinery to 316 stainless steel coil for cleanroom production, Reliance Metalcenter supplies the materials you need to keep operations on schedule. As a metal processor with in-house slitting, leveling, and shearing, we support precision manufacturing across northern California, northern Nevada, and Mexico. Our team works closely with fabricators, OEMs, and manufacturers to provide fast access to coil products and processing services. Connect with us today and see how a proven steel distributor and aluminum coil supplier can support your production goals.
We’d Love to Hear From You
Contact us today to learn more about our products and processing services.

