Piyush Steel supplies Stainless Steel 316 Flanges to clients globally, built under the ISO Certified Quality Management Systems, ISO 9001, ISO 14001 and ISO 45001. Stainless Steel Flanges are manufactured in various designations, standards and specifications, such as custom sizes for non-standard applications.
Our flanges are distinguished by tight and precise machining tolerances. All pieces are durable and well finished. This uniform design applies to all order quantities, whether 50 or 5,000.
Years of sector-specific experience back this consistency. We've engineered flanges for petrochemical, oil and gas and pharmaceutical applications, adjusting dimensions to match exact project requirements rather than forcing standard sizing onto non-standard jobs.
Table Of Content
Stainless Steel 316 Flanges description-
Stainless Steel 316 Flanges have great resistance to reducing media,
oxidizing agents, atmospheric corrosion and other corrosive agents. It has great
workability in polluted marine waters. It has also great resistance to IGC attacks in
the welded conditions. It has great toughness and strength at higher temperatures. In
the annealed conditions structure of flanges are non-magnetic, however, after the cold
working operation, it becomes magnetic in nature.
These grade flanges are weldable with all type of standard welding operations. This
grade is combined with chromium, nickel, and molybdenum and also it is known as UNS
S31600. SS flanges are developed to offer great resistance to abrasion and corrosion.
In addition to molybdenum, its general corrosion resistance ability is improved. It has
great resistance ability to pitting and crevice corrosion cracking. SS flanges offer a
great amount of creep, tensile and stress to rupture strength even in the hoisted
temperatures. The different finishing process is exposed in these flanges to attain
precise dimensions and surface finish. Industrial coats are added to add prevention from
contamination. These flanges have great weldability and can be welded by all standard
welding operation such as TIG, MIG, SAW, resistance welding and arc welding. Moreover,
it is weldable with or without filler materials.
Quality section-
Quality Assurance is run on a dedicated program custom-designed for flanges and the added
operations various industries require. As a stainless steel 316 flanges supplier, our
team conducts destructive and non-destructive tests on all our 316 flanges, such as
hydrostatic testing, charpy testing, hardness testing, tensile testing, PMI testing and
ultrasonic testing on each batch.
This process is regulated from start to finish by international standards. Our commitment ensures you a reliable partner for stainless steel 316 flange manufacturing. We are dedicated to consistently and accurately delivering the quality you expect. Every test result is also recorded, then validated in line with the original order specifications prior to dispatch approval, thus closing the gap between client specifications and actual shipments.
Destructive tests-
Material tests-
We attach some sort of documentation reports along with a supplied range of products for quality assurance. We also provide some manuals and reports so customers can easily use these flanges.
Reports-
Documents-
Packaging of flanges-
Stainless Steel 316 Flanges are packed and delivered in the
standard packing of wooden cases, cartons, pallets, and plywood boxes that adds
protection from damages. Moreover, these flanges are delivered in the form of bundles or
in shrink wrap. This ensures none of any flange gets damage while exporting.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | - | Z7CND17"11"02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
Pipe Specification : ASTM A182 / ASME SA182
Dimension Standard : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN Flanges : DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
JIS Flanges : JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K
BS Flanges : BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 316 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 - 18.00 | 2.00 - 3.00 | 11.00 - 14.00 | 67.845 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 deg C (2550 deg F) | Psi - 75000 , MPa - 515 | Psi - 30000 , MPa - 205 | 35 % |
The full identification of the flanges should be continuously marked down its whole length, including :

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SS 316 adds 2.00-3.00% molybdenum, which 304 lacks entirely. That addition boosts resistance to pitting and crevice corrosion, especially in chloride-rich and marine environments where 304 degrades faster.
Petrochemical, oil and gas, pharmaceutical and food processing plants rely on these flanges. Power generation and pulp and paper facilities use them too, anywhere corrosive media or marine exposure rules out lower grades.
Piyush Steel stocks slip-on, weld neck, blind, threaded, socket weld, lap joint, RTJ, orifice, long weld neck, spectacle blind, forged and plate flanges, all manufactured to ANSI/ASME B16.5 and equivalent standards.
Yes. SS 316 withstands continuous service up to 870°C and retains strength against creep and stress rupture at elevated temperatures, making it suitable for high-temperature process lines.
Sizes run from 1/2" (15 NB) to 48" (1200 NB), across pressure classes 150# through 2500# and PN6 through PN64.
Piyush Steel manufactures flanges in custom dimensions, altered tolerances and specific machining allowances to match non-standard project requirements beyond catalog sizing.
ASME Flanges, DIN Flanges, ANSI Flanges With Mill And Third Party Test Certificate.
Stainless Steel 316 Flanges Price List
Request the latest Stainless Steel 316 Flanges Price List. Please Call +91 22 23867540 or Send an Email to [email protected] for Stainless Steel UNS S31600, 1.4401 / 1.4436, SUS 304 Pipe Flanges Ready stock information and updated price list.