Machuca Fittings, based in Kuala Lumpur, Malaysia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel 316H Pipe Fittings. Renowned for their precision, durability, and strict quality standards, Machuca Fittings caters to a diverse array of industries, including chemical processing, petrochemical, power generation, food and beverage, and marine applications. Their Stainless Steel 316H Pipe Fittings are expertly designed to deliver outstanding high-temperature strength, excellent corrosion resistance, and dependable, seamless connections. By following international standards and maintaining rigorous quality control, Machuca Fittings provides robust and efficient piping solutions that guarantee operational safety, long-lasting performance, and enhanced reliability in even the most demanding industrial and commercial settings.
| Specifications | ASTM A403 / ASME SA403 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size Range | 15 NB UP TO 1200 NB ; 1/8″ NB TO 48″ NB |
| Schedule | SCH 5S , 10S ,10, 20 , 40S , 40 , STD , 60 , 80S , 80 , XS , 100 , 120 , 140 , 160 & XXS. |
| Type | Seamless & 100% X-Ray Welded, Fabricated |
The composition of Stainless Steel 316H Pipe Fittings primarily includes iron, along with 16–18% chromium, 10–14% nickel, and 2–3% molybdenum, featuring a slightly higher carbon content than 316 to boost high-temperature strength. This austenitic stainless steel is known for its remarkable corrosion resistance, especially in oxidizing environments and against chloride-induced pitting, while also maintaining impressive mechanical strength at elevated temperatures. Typically, it boasts a tensile strength ranging from 515–620 MPa, a yield strength of 205–310 MPa, and an elongation of up to 40%. Its unique blend of heat resistance, toughness, and durability makes it the perfect choice for demanding piping systems that face extreme thermal and corrosive conditions.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 316H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.030 max | 16.00 – 18.00 | 2.00 – 3.00 | 10.00 – 14.00 | 68.89 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Machuca Fittings one of the largest suppliers of Stainless Steel 316H Pipe Fittings in Kuala lumpur, Malaysia. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel 316H is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel 316H Pipe Fittings in the Malaysia.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel 316H Pipe Fittings from Machuca 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.
| STANDARD | WERKSTOFF NR. | UNS |
| SS 316H | 1.4401 | S31609 |
SS 316H Pipe Fittings offer superior strength and durability, particularly in high-temperature and high-pressure environments. The higher carbon content enhances creep resistance and mechanical properties, making them suitable for demanding industrial applications. These fittings provide excellent corrosion resistance, especially in chloride-rich and acidic environments, ensuring long-lasting performance. Stainless Steel 316H exhibits exceptional oxidation resistance at elevated temperatures and maintains structural integrity under thermal cycling. Their excellent weldability and machinability make them easy to fabricate and install, making them a reliable choice for industries like petrochemical, power generation, and chemical processing.
| Nominal PipeSize | Outside Diameter | 90° Elbows | 45° Elbows | 180° Returns | ||||
|---|---|---|---|---|---|---|---|---|
| (inches) | – | Long Radius | Short Radius | Long Radius | Long Radius | |||
| (mm) | (inches) | Center to Face (inches) | Center to Face (inches) | Center to Face (inches) | Radius (inches) | Center to Center (inches) | Back to face (inches) | |
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | 7/16 | 2 1/4 | 1 11/16 | ||
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
Yes, custom sizes are available for Stainless Steel 316H Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@machucafittings.com.
| NPS (inch) | Pipe Sch. | Wall Thk. (in) | OD (inch) | Temperature | ||||
|---|---|---|---|---|---|---|---|---|
| 100 | 200 | 300 | 400 | 500 | ||||
| Allowable Stress (Pressure Rating) | ||||||||
| 16700 | 16700 | 16700 | 15500 | 14400 | ||||
| 1″ | 40 | 0.133 | 1.315 | 2205 | 2205 | 2205 | 2047 | 1902 |
| 80 | 0.179 | 1.315 | 3061 | 3061 | 3061 | 2841 | 2640 | |
| 160 | 0.250 | 1.315 | 4493 | 4493 | 4493 | 4170 | 3874 | |
| 1 1/2″ | 40 | 0.145 | 1.900 | 1629 | 1629 | 1629 | 1512 | 1404 |
| 80 | 0.200 | 1.900 | 2303 | 2303 | 2303 | 2138 | 1986 | |
| 160 | 0.281 | 1.900 | 3362 | 3362 | 3362 | 3120 | 2899 | |
| 2″ | 40 | 0.154 | 2.375 | 1371 | 1371 | 1371 | 1272 | 1182 |
| 80 | 0.218 | 2.375 | 1985 | 1985 | 1985 | 1843 | 1712 | |
| 160 | 0.344 | 2.375 | 3283 | 3283 | 3283 | 3047 | 2831 | |
| 3″ | 40 | 0.216 | 3.500 | 1301 | 1301 | 1301 | 1208 | 1122 |
| 80 | 0.300 | 3.500 | 1844 | 1844 | 1844 | 1712 | 1590 | |
| 160 | 0.438 | 3.500 | 2787 | 2787 | 2787 | 2587 | 2403 | |
| 4″ | 40 | 0.237 | 4.500 | 1102 | 1102 | 1102 | 1023 | 950 |
| 80 | 0.337 | 4.500 | 1596 | 1596 | 1596 | 1482 | 1377 | |
| 160 | 0.531 | 4.500 | 2611 | 2611 | 2611 | 2424 | 2552 | |
| 5″ | 40 | 0.258 | 5.563 | 965 | 965 | 965 | 896 | 832 |
| 80 | 0.375 | 5.563 | 1428 | 1428 | 1428 | 1325 | 1231 | |
| 160 | 0.625 | 5.563 | 2474 | 2474 | 2474 | 2296 | 2133 | |
| 6″ | 40 | 0.280 | 6.625 | 877 | 877 | 877 | 814 | 756 |
| 80 | 0.432 | 6.625 | 1379 | 1379 | 1379 | 1280 | 1189 | |
| 160 | 0.719 | 6.625 | 2382 | 2382 | 2382 | 2211 | 2054 | |
| 8″ | 40 | 0.322 | 8.625 | 771 | 771 | 771 | 716 | 665 |
| 80 | 0.500 | 8.625 | 1218 | 1218 | 1218 | 1131 | 1050 | |
| 160 | 0.906 | 8.625 | 2298 | 2298 | 2298 | 2133 | 1982 | |
| 10″ | 40 | 0.365 | 10.750 | 699 | 699 | 699 | 649 | 603 |
| 80 | 0.594 | 10.750 | 1159 | 1159 | 1159 | 1075 | 999 | |
| 160 | 1.125 | 10.750 | 2289 | 2289 | 2289 | 2124 | 1974 | |
Stainless Steel 316H Pipe Fittings find extensive use in industries that demand high-temperature and corrosion-resistant piping solutions. They are frequently utilized in power plants, chemical and petrochemical processing, oil and gas, food and beverage, and marine sectors. These fittings are ideal for pipelines that transport hot fluids, steam, and corrosive media under high temperatures and pressures. Moreover, they are commonly employed in boilers, heat exchangers, and high-temperature piping systems where thermal stability and corrosion resistance are crucial.
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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