Heer Fittings, based in Delhi, India, has built a solid reputation as a reliable manufacturer and supplier of Stainless Steel 316 / 316L Buttweld Fittings. They provide top-notch piping solutions that adhere to strict international standards like ASTM A403. Their extensive range of buttweld components includes elbows, tees, reducers, and caps, all crafted for durability and reliability in tough, corrosive, and high-pressure settings. With a strong focus on quality, cutting-edge manufacturing techniques, and rigorous quality control, Heer Fittings caters to various industries, including chemical processing, marine, pharmaceuticals, and oil & gas, delivering products that prioritize safety, precision, and long-lasting performance.
| Specifications | ASTM A403 / ASME SA403 |
|---|---|
| Size | 1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated) |
| Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Thickness | 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75 |
| Type | Seamless / Welded / Fabricated |
The Stainless Steel 316 / 316L Buttweld Fittings are made from austenitic stainless steel, featuring essential elements like chromium (16–18%), nickel (10–14%), and molybdenum (2–3%) to boost their resistance to corrosion and pitting. The 316L grade, with its lower carbon content (maximum 0.03%), enhances weldability and reduces carbide precipitation. These fittings boast a tensile strength of about 485–515 MPa, a yield strength of roughly 170–205 MPa, and an elongation of around 30–40%. Their mechanical and chemical properties ensure they perform exceptionally well in harsh environments that demand strength, corrosion resistance, and formability.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 316 | min. | – | – | – | – | 16.0 | 2.0-3.0 | 10.0 | – | |
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | – | ||
| 316L | min. | – | – | – | – | – | 16.0 | 2.0-3.0 | 10.0 | – |
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | – | ||
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
Heer Fittings is a leading supplier of Stainless Steel 316 Buttweld Fittings in Delhi, India. We offer an extensive range of Stainless Steel 316L Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
|---|---|---|---|---|---|---|---|
| SS 316 Fittings | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | – | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L Fittings | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
Stainless Steel 316 / 316L Buttweld Fittings from Heer Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
Stainless steel 316/316L Buttweld Fittings provide excellent corrosion resistance, especially in harsh environments such as the marine and chemical industry, and the presence of molybdenum provides superior strength, durability and superior heat resistance against, making it ideal for important projects. The lower carbon content of 316L reduces the risk of sensitivity and intergranular corrosion, and enhances weldability. These materials are highly resistant to pitting and cravis corrosion, providing long service life. In addition, it is inert, easy to maintain, and provides flexible and leak-proof connections to plumbing systems.
| Nominal Pipe Size | Outside Diameter | Caps | Straight Tees | Straight Crosses | Stub Ends | |||
|---|---|---|---|---|---|---|---|---|
| (inches) | (mm) | (inches) | Length (inches) | Center to End (inches) | Center to End (inches) | Lap Diameter (inches) | Long Length (inches) | Short Length (inches) |
| 1/2 | 21.3 | 0.840 | 1 | 1 | – | 1 3/8 | 3 | 2 |
| 3/4 | 26.7 | 1.050 | 1 | 1 1/8 | – | 1 11/16 | 3 | 2 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
| 1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
| 3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
| 4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
| 6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 8 | 219.1 | 8.625 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
| 10 | 273.1 | 10.750 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
| 12 | 323.9 | 12.750 | 6 | 10 | 10 | 15 | 10 | 6 |
Yes, custom sizes for Stainless Steel 316 / 316L Buttweld Fittings are available at Heer Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@heerfittings.com.
Stainless Steel 316 / 316L Buttweld Fittings find extensive applications across various sectors, including chemical and petrochemical processing, pharmaceuticals, food and beverage, marine, and water treatment. Their outstanding resistance to chlorides and corrosive substances makes them perfect for piping systems in coastal areas, high-salinity environments, and aggressive industrial settings. These fittings create secure, leak-proof joints in high-temperature and high-pressure operations, ensuring the integrity and longevity of the system. Their hygiene, corrosion resistance, and strength make them ideal for both sanitary and structural applications in challenging conditions.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.








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