Stainless Steel Flanges Supplier | Wholesale SS Flanges for Industrial & OEM Applications

Platinum Metals IND LLC is a trusted stainless steel flanges supplier serving contractors, project engineers, and industrial distributors across global markets. We stock and supply a complete range of wholesale stainless steel flanges in grades SS 304, 316, 316L, 321, and 904L — manufactured to ASME B16.5, ASME B16.47, and DIN standards. Whether you need standard sizes for an active project or a custom specification for a long-term supply contract, we have the inventory, documentation, and logistics to deliver.

Types of Stainless Steel Flanges We Supply

As an experienced stainless steel flanges manufacturer, we carry all major flange types to match your piping configuration and pressure requirements:

Weld Neck Flanges

Best for high-pressure and high-temperature systems. Designed for use in demanding pressure classes from 150# to 2500#, weld neck flanges transfer stress to the pipe wall — making them the preferred choice for refineries, chemical reactors, and high-cycle systems.

Slip-On Flanges

Suitable for low to medium-pressure pipework. The flange slides over the pipe and is welded at both the inner and outer diameters, making installation faster and alignment easier during assembly.

Blind Flanges

Used for closing pipe ends and isolating sections during pressure testing. Common in systems that require future expansion or periodic maintenance access.

Socket Weld Flanges

Designed for small-bore, high-pressure lines. Offer clean internal flow and strong joints — widely used in hydraulic and instrumentation lines.

Threaded Flanges

For non-welded connections in low-pressure systems. Suitable where welding is not practical or permitted on site.

Lap Joint Flanges

Used in systems that need frequent disassembly for cleaning or inspection. Commonly specified in food processing and pharmaceutical piping.

Stainless Steel Flange Grades & Standards

Selecting the right grade is critical to performance and compliance. Here is our standard material range:

• SS 304 / 304L — General-purpose grade with good corrosion resistance; the low-carbon 304L variant offers improved weldability and higher corrosion resistance. Used in food processing, water treatment, and general industrial applications.
• SS 316 / 316L — Commonly used in chemical processing, marine environments, pulp and paper mills, and offshore oil and gas applications where superior corrosion resistance is required.
• SS 321 — Specifically designed for high-temperature applications in refineries and chemical plants, stabilised with titanium to prevent carbide precipitation.
• SS 904L — Used in chemical plants for aggressive acid environments, offering outstanding resistance to sulfuric and phosphoric acid.

All wholesale stainless steel flanges we supply conform to ANSI/ASME B16.5, ANSI/ASME B16.47, and DIN/Metric international standards. ASME B16.5 covers pipe sizes from ½" to 24" across pressure classes 150, 300, 400, 600, 900, 1500, and 2500. For larger-diameter systems, we supply flanges under ASME B16.47 covering 26" through 60".

Industries We Supply Stainless Steel Flanges To

Our wholesale stainless steel flanges are in active use across:

• Oil & Gas — Used to connect pipelines and manage high-pressure systems, especially in offshore and onshore drilling platforms
• Chemical Processing — Resistant to aggressive chemicals, suitable for pipelines carrying acids, solvents, and other corrosive materials
• Marine & Offshore — Performs well in harsh saltwater environments, ensuring durability for ships, offshore platforms, and marine equipment
• Food & Pharmaceutical — Trusted in food, beverage, and pharmaceutical industries where hygiene and corrosion resistance are critical
• Water Treatment — Used in filtration systems, distribution lines, and desalination plants
• Power Generation — High-temperature grades like SS 321 used in steam lines and boiler systems

Why Source Wholesale Stainless Steel Flanges from Platinum Metals?

• Bulk inventory ready to ship — No delays waiting for production runs. We stock wholesale stainless steel flanges in all major grades and sizes for immediate dispatch.
• Certified documentation — Material Test Certificates (MTC), mill certificates, and compliance documents supplied with every batch.
• Custom specifications accepted — Non-standard bore sizes, special face types, and project-specific dimensions available on request.
• Competitive bulk pricing — Volume discounts available for contractors, distributors, and EPC project buyers.
• Global supply capability — We supply to buyers in the Middle East, Europe, Southeast Asia, and the Americas.

Request a Quote for Wholesale Stainless Steel Flanges

Send us your specifications — grade, flange type, size, pressure class, face type, standard, and quantity — and we will respond with pricing and availability within 24 hours. We work with procurement managers, project engineers, and industrial distributors who need a reliable stainless steel flanges supplier for one-time projects and long-term supply contracts.

Frequently Asked Questions

Q: What stainless steel flange grades do you supply?
We supply SS 304, 304L, 316, 316L, 321, and 904L. Other grades are available on request depending on your application.

Q: Are your flanges ASME B16.5 compliant?
Yes. All flanges conform to ASME B16.5 and ASME B16.47 where applicable. DIN and ISO standards are also available.

Q: What is the minimum order quantity for wholesale stainless steel flanges?
We accept both project-quantity and bulk wholesale orders. Contact us with your quantity and we will confirm pricing and lead time.

Q: Do you supply Material Test Certificates (MTC) with orders?
Yes. MTC and full traceability documentation are provided with every supply.

Q: Can you supply custom-size stainless steel flanges?
Yes. Custom bore sizes, special face types, and non-standard dimensions are available against technical drawings or specifications.

Q: Which industries do you primarily supply to?
We supply to oil and gas, chemical processing, marine, food and pharmaceutical, water treatment, and power generation industries globally.