At Namo Alloy, we stock and supply heavy-duty Carbon and Alloy Steel Flanges and Pipe Fittings designed for high-pressure and high-temperature service. Our range features premium carbon grades like ASTM A105 for forged flanges and A234 WPB for seamless fittings, as well as high-performance alloy grades including F5, F11, and F22. These components are critical for power plants, refineries, and chemical processing where thermal stability and mechanical strength are paramount. From Weld Neck and Blind Flanges to Elbows, Tees, and Reducers, our products are precision-forged and CNC machined to ensure perfect alignment and a zero-leak seal. All items are 100% mill-certified to ASME B16.5 and B16.9 standards, offering the traceability and safety required for the most demanding energy infrastructure projects.
| Grade | C (Carbon) | Mn (Manganese) | P (Max) | S (Max) | Si (Silicon) | Cr (Chromium) | Mo (Moly) | Ni (Nickel) |
|---|---|---|---|---|---|---|---|---|
| ASTM A105 (Carbon) | 0.35% Max | 0.60 - 1.05% | 0.035% | 0.040% | 0.10 - 0.35% | 0.30% Max | 0.12% Max | 0.40% Max |
| ASTM A182 F11 (Alloy) | 0.05 - 0.15% | 0.30 - 0.60% | 0.030% | 0.030% | 0.50 - 1.00% | 1.00 - 1.50% | 0.44 - 0.65% | - |
| ASTM A182 F22 (Alloy) | 0.05 - 0.15% | 0.30 - 0.60% | 0.040% | 0.040% | 0.50% Max | 2.00 - 2.50% | 0.87 - 1.13% | - |
| Grade | Tensile Strength (MPa) min. | Yield Strength (MPa) min. | Elongation (%) min. | Reduction of Area (%) min. | Hardness (HBW) Max. |
|---|---|---|---|---|---|
| ASTM A105 | 485 MPa | 250 MPa | 22% | 30% | 187 HBW |
| ASTM A182 F11 (Cl. 2) | 485 MPa | 275 MPa | 20% | 30% | 143 - 209 HBW |
| ASTM A182 F22 (Cl. 3) | 515 MPa | 310 MPa | 20% | 30% | 156 - 207 HBW |
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ASTM A105, A350 LF2, ASTM A182 F5/F11/F22/F91 |
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Flange Types
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Weld Neck, Slip-On, Blind, Threaded, Socket Weld, Lap Joint, Orifice |
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Pressure Ratings
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Class 150#, 300#, 600#, 900#, 1500#, 2500# (PN6 to PN160) |
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Size Range
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1/2" to 48" (Custom Large Diameters up to 72" available) |
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Anti-rust Oil, Black Paint, Yellow Transparent, Galvanized, Epoxy Coated |
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ASTM A234 WPB/WPC, ASTM A420 WPL6, ASTM A234 WP11/WP22/WP91 |
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90°/45° Elbows (SR/LR), Equal/Reducing Tees, Concentric/Eccentric Reducers, Caps, Crosses |
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Wall Thickness
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SCH 10, SCH 40, SCH 80, SCH 160, XS, XXS |
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Seamless, Welded (100% X-Ray Tested), Fabricated |
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HIC Test, IGC Test, NACE MR 0175 Compliance, Charpy Impact Test |
Extreme Service Reliability: Our Alloy Steel range is designed for high-creep resistance and thermal stability. All items are supplied with EN 10204 3.1 Mill Test Certificates and undergo rigorous Hydrostatic and Ultrasonic testing to ensure structural integrity in high-pressure steam and hydrocarbon lines.
Namo Alloy is a leading stockist and global exporter of premium Stainless Steel, Carbon Steel, and High Nickel Alloys.
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