Top Stainless Steel 310 / 310S Flanges Manufacturer & Supplier in the USA
Nakoda Steel Industry is a trusted Stainless Steel 310 / 310S Flanges Manufacturer and Supplier in the USA, offering high-performance industrial flanges built to handle extreme conditions. We specialize in manufacturing Slip-On, Weld Neck, Threaded, Socket Weld, Blind, Lap Joint, Ring Type Joint (RTJ), and Spectacle Blind Flanges using premium quality stainless steel.

Why Choose Our Stainless Steel 310 / 310S Flanges?
Stainless Steel 310 and 310S Flanges are high-alloy steels with a minimum of 10.5% chromium content, offering exceptional resistance to oxidation and corrosion. These flanges are widely used across various industries in the United States, including food processing, petrochemicals, power generation, and marine applications.
- 310 SS Slip-On Flanges – Known for excellent corrosion resistance in food-grade and high-temperature environments.
- 310 SS Threaded Flanges – Rust-resistant and ideal for applications requiring ease of assembly without welding.
- 304H SS Weld Neck Flanges – Designed for high-pressure applications, offering strong mechanical strength.
- 304H SS Blind Flanges – Suitable for systems requiring secure sealing and shutoff capabilities.
Unlike carbon steel, our UNS S31000 and S31008 Flanges (310/310S) form a passive chromium oxide layer on the surface, preventing rust and ensuring long-term durability in low-oxygen and high-salinity environments. These flanges are ideal for U.S. offshore oil rigs, chemical processing plants, and heat treatment applications.

Types of Stainless Steel 310 / 310S Flanges We Offer:
- 310S Ring Type Joint (RTJ) Flanges
- SS 310 Spectacle Blind Flanges
- SS 310 Spacer Flanges
- ANSI B16.5 SS 310 Nippolet Flanges
- Forged and Screwed 310 Flanges
- 150# to 2500# Class ANSI Flanges
Technical Specifications
- Grades: Stainless Steel 310 / 310S
- Specifications: ASTM A182 / ASME SA182
- Size Range: 1/2″ (15 NB) to 48″ (1200 NB)
- Pressure Ratings: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6–PN64
- Standards: ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, EN 1092, DIN


Quality Assurance & Testing
Nakoda Steel Industry guarantees all products undergo rigorous quality inspections to meet U.S. industrial standards. We provide:
- Manufacturer Test Certificates (MTC) – EN 10204/3.1B
- 100% Radiography Test Report
- Raw Material Certification
- Third-Party Inspection Reports
- NACE MR 01075 Compliance Upon Request
Material Testing Includes:
- Tensile Strength & Area Reduction Test
- Hardness Testing
- Spectro Chemical Analysis
- PMI (Positive Material Identification)
- Flattening & Flaring Tests
- Micro & Macro Structure Testing
- Pitting Resistance & IGC (Intergranular Corrosion) Testing

Looking for a Reliable Stainless Steel Flanges Supplier in the USA?
Contact Nakoda Steel Industry for top-quality 310 / 310S stainless steel pipe flanges that meet the highest American manufacturing and safety standards. We supply across major U.S. cities including Houston, Chicago, Los Angeles, New York, and Miami.
Call us today for custom orders, export inquiries, and fast delivery within the USA.