Metinox Overseas is a renowned manufacturer, stockist, supplier, and exporter of ASTM A312 Stainless Steel 347/347H Welded Pipes. Our extensive range of ASTM A312 TP 347/347H SS pipes complies with numerous national and international product quality standards. SS 347 Pipes constitute a steel alloy with a minimum of 10.5% chromium content by mass. Stainless Steel 347H Electropolish Pipes contain adequate chromium to undergo passivation, forming an inert film of chromium oxide on the surface.
This film expands, unlike iron oxide, and tends to flake and fall away, resulting in enhanced corrosion resistance. Our Stainless Steel 347H Welded Pipe is resistant to corrosion, rust, or staining with water, unlike ordinary steel. Metinox Overseas manufactures Stainless Steel 347 Welded Pipe, which finds applications in corrosion-resistant tools such as nutcrackers and in the transportation of various fluids including gas, water, milk, and natural gas. These pipes exhibit excellent resistance to intergranular corrosion within the temperature range of 427°C to 816°C due to chromium carbide precipitation. While SS 347 ERW Pipes are not entirely stain-proof in low-oxygen, high-salinity, or poor air-circulation environments, they offer exceptional oxidation protection and creep strength.
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Stainless Steel 347H is an adjusted version of SS 347 designed to enhance resistance to drag and provide greater strength at temperatures exceeding 1000°F. Metinox Overseas offers SS 347H Welded Pipes in single random, double random, and cut lengths, with customization options available for shape, size, and dimension according to customer requirements. These pipes come with plain end, beveled end, or threaded end finishes.
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The characteristics of 347 Pipes, such as non-corrosiveness, high-temperature resistance, shock and vibration resistance, sturdy construction, ease of installation, reliability, and durability, are widely recognized. Our ASTM A312 Stainless Steel 347H Welded Pipes cater to various industries including gas, pulp, paper, sugar, chemical, petroleum, petrochemical, pharmaceutical, fertilizer, condenser, and heat exchange industries.
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Metinox Overseas manufactures Stainless Steel 347/347H Welded Pipes in various types such as Seamless, ERW, Welded, Fabricated, and CDW, available in forms like round pipes, square pipes, and rectangular pipes. We prioritize quality assurance by subjecting our pipes to rigorous testing including flaring, flattening, positive material, third-party inspection, chemical, intergranular, Rockwell hardness, and mechanical tests before delivery to clients. Our packaging solutions ensure the protection of the pipes from unauthorized access, utilizing wooden boxes and crates.
With Metinox Overseas, you can trust in the quality, reliability, and diverse applications of our Stainless Steel 347/347H Welded Pipes, manufactured to meet the highest industry standards.
Specifications | ASTM A312 / ASME SA312 |
---|---|
Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock |
Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Size | 1/2″ NB – 24″ NB |
Type | Welded |
Form | Round Pipes, Square Pipes, Rectangular Pipes |
Length | Single Random, Double Random & Required Length |
End | Plain End, Beveled End, Treaded |
STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
---|---|---|---|---|---|
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
---|---|---|---|---|---|---|---|---|---|
SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
---|---|---|---|---|
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % |