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Maria Pipes and Tubes, Kuala Lumpur, Malaysia, is a reliable manufacturer and supplier of **Stainless Steel 316H EFW Pipes**, providing efficient piping solutions for high-temperature and high-pressure industrial demands. Stainless Steel 316H is the high-carbon variant of 316, engineered to provide enhanced strength and creep resistance at high temperatures. Our Electric Fusion Welded (EFW) pipes are produced with state-of-the-art welding methods and high-quality materials to provide outstanding structural strength, corrosion resistance, and dimensional accuracy. Maria Pipes and Tubes provides the main industries like petrochemicals, refineries, thermal power plants, and chemical processing plants.
**Stainless Steel 316H EFW Pipes** consist of 16–18% chromium, 10–14% nickel, 2–3% molybdenum, and higher carbon content (0.04–0.10%), which improves high-temperature performance. These pipes provide a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of 35%. EFW manufacturing process allows the facility to manufacture large-diameter pipes with heavy, solid weld seams. 316H also offers superior resistance to oxidation, pitting, and general corrosion and can be used in severe and thermally intensive conditions.
| Specification | ASTM A358 / ASME SA358 |
| Specification | A / SA358 CLASS 1, A / SA358 CLASS 2, A / SA358 CLASS 3, A / SA358 CLASS 4, A / SA358 CLASS 5 |
| Grades | 304, 304L, 304H, 309S, 310S, 316, 316L, 316H, 317L, 321, 321H, 347, 347H, 904L ETC. |
| Type | EFW, ELECTRIC FUSION WELDED |
| Outer Diameter Size | Electric Fusion Welded / ERW- 8″ NB To 110″ NB (Nominal Bore Size) |
| Wall Thickness | Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness) |
| Length | 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size. |
| Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered |
| Coating | Electropolish, Mechanical Polish, Satin Finish, Passivated |
| Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME |
| Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
| STANDARD | UNS | WERKSTOFF NR. |
| SS 316H | S31609 | 1.4401 |
| 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 |
| Grade | Tensile Strength | Yield Strength | Elongation |
| SS 316H | Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Stainless Steel 316H EFW Pipes from Maria Pipes and Tubes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.
| NPS Designator | Outside Diameter | Nominal Wall Thickness | ||||||||
| in. | mm | Schedule 5SA | Schedule 10SA | Schedule 40SA | Schedule 80SA | |||||
| in. | mm | in. | mm | in. | mm | in. | mm | |||
| 8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
| 10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500B | 12.70B |
| 12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375B | 9.52B | 0.500B | 12.70B |
| 14 | 14.000 | 355.60 | 0.156 | 3.96 | 0.188B | 4.78B | … | … | … | … |
| 16 | 16.000 | 406.40 | 0.165 | 4.19 | 0.188B | 4.78B | … | … | … | … |
| 18 | 18.000 | 457.20 | 0.165 | 4.19 | 0.188B | 4.78B | … | … | … | … |
| 20 | 20.000 | 508.00 | 0.188 | 4.78 | 0.188B | 4.78B | … | … | … | … |
| 22 | 22.000 | 558.80 | 0.188 | 4.78 | 0.218B | 5.54B | … | … | … | … |
| 24 | 24.000 | 609.60 | 0.218 | 5.54 | 0.250 | 6.35 | … | … | … | … |
| 30 | 30.000 | 762.00 | 0.250 | 6.35 | 0.312 | 7.92 | … | … | … | … |
| Grade | Density (kg/m3) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity (W/m.K) | Elastic Modulus (GPa) | Specific Heat 0-100°C (J/kg.K) | Elec Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C | |||||
| 316H | 8000 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 193 | 500 | 740 |
We offer custom sizes for Stainless Steel 316H EFW Pipes to meet your specific needs. Our dedicated team at Maria Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@mariapipes.com.
**Stainless Steel 316H EFW Pipes** are best suited to applications of continuous exposure to high temperatures and pressure, including superheaters, heat exchangers, boilers, pressure vessels, and steam piping systems. Their excellent mechanical strength and corrosion resistance make them particularly well suited to power generation, oil and gas, and industrial process plants. The electric fusion welding process guarantees consistent quality and strength throughout the length of the pipe, making pipes such as these reliable for heavy-duty long-term service. Stainless Steel 316H EFW Pipes provide a perfect blend of performance, reliability, and durability in adverse service conditions.
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