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Home > Products > Industrial Metal Pipe > API 5L Pipes > ASTM A335 P12 Pipe
Kwality Steelage Pvt Ltd: Leading Manufacturer and Supplier of ASTM A335 P12 Alloy Steel Pipes
Kwality Steelage Pvt Ltd, based in Mumbai, India, specializes in the manufacturing, supply, and export of ASTM A335 P12 Alloy Steel Pipes. Known for their durability and strength, these pipes are crucial in industries that require materials to withstand high temperatures and pressures, such as petrochemicals, power plants, and refineries. With an advanced composition that includes up to 1.25% chromium and 0.65% molybdenum, P12 pipes offer enhanced corrosion resistance and are designed to maintain structural integrity under extreme conditions.
Our ASTM A335 P12 seamless pipes, crafted from chromium-molybdenum alloy steel, are available in a range of nominal bore sizes from 1/8” NB to 24” NB, with wall thicknesses ranging from 2 mm to 14 mm. These pipes comply with stringent ASME SA335 specifications and are suitable for bending, flanging, and other forming processes. They are highly customizable in lengths up to 16000 mm, making them versatile for diverse high-temperature applications.
The P12 grade alloy steel pipes feature a minimum tensile strength of 415 MPa and a yield strength of 205 MPa, supporting a minimum elongation of 30%. This composition is ideal for critical applications, ensuring strength and flexibility. The chemical makeup, including 1% max molybdenum and 0.8% chromium, grants the alloy resistance against oxidation and embrittlement, making it suitable for demanding conditions, especially in boiler and superheater tubes.
Our ASTM A335 P12 pipes are manufactured using advanced cold-drawn or hot-rolled methods, depending on client specifications. Each pipe undergoes rigorous quality checks, including hydrostatic and non-destructive electric testing, ensuring compliance with international standards. We also offer P12 pipes with different end finishes, such as beveled, plain, or threaded, and protective coatings like 3LPE or FBE to further enhance corrosion resistance.
Kwality Steelage’s P12 pipes are engineered to serve in applications where high-temperature service is essential. Common uses include power plant piping, oil and gas drilling operations, and heat transfer equipment like heat exchangers and boilers. The versatility of our product extends to its range of forms, including round, square, and rectangular shapes, and meets specific industry demands with options like ASME SA335 P12 seamless pipes and P12 alloy steel ERW tubes.
As an ISO-certified company, Kwality Steelage Pvt Ltd provides top-quality P12 Alloy Steel Seamless Pipes, offering seamless, ERW, and fabricated pipe options. With competitive pricing and adherence to industry standards, we stand out as a trusted supplier for clients globally. For a custom quote or more details on our A335 P12 Chrome Moly Alloy Pipe range, contact us today.
| Specification | Details |
| Size Range | 1/8 to 24 inch NB |
| Schedule Thickness Range | SCH 20, SCH 40, SCH 80, SCH 160, XS, XXS, All Schedules |
| Applications | Oil Refineries, Petrochemical Industries, Power Plants, Boilers, Chemical Industries, Marine and Shipbuilding, Fluid and Gas Transmission |
| Pipe Type | Seamless |
| Pipe & Tube Form | Round, Square, Rectangular, Hydraulic Pipes |
| Manufacturing Process | Cold Drawn or Hot-Finished, Heat Treated (Annealed, Normalized, Quenched and Tempered) |
| Material Composition | Alloy Steel with Chromium, Molybdenum, Carbon |
| End Type | Plain, Beveled, Threaded |
| Length Options | Single, Double Random, Custom Lengths (up to 12 meters) |
| End Protection | Plastic Caps |
| Outside Coating | Anti-Corrosion Oil, Black Painting |
| Tolerance Type | Outside Diameter (OD) | Wall Thickness (WT) |
| Size Tolerance | +1% / -1% of specified OD | +12.5% / -10% of specified WT |
| Outside Diameter (mm) | Wall Thickness (mm) | Nominal Size (in.) | Schedule | Weight (Kg/m) |
| 13.72 | 1.65 | 1/4 | SCH 10S | 0.50 |
| 21.34 | 3.73 | 1/2 | SCH 80 | 1.65 |
| 42.16 | 6.35 | 1-1/4 | SCH 160 | 5.69 |
| 88.90 | 11.13 | 3 | SCH 160 | 21.67 |
| 168.28 | 18.26 | 6 | SCH 160 | 68.59 |
Note: Additional sizes and weights are available upon request.
| Grade | Yield Strength (Min) | Tensile Strength (Min) | Elongation (%) |
| P12 | 205 MPa | 415 MPa | 30 |
| Element | Maximum % Composition |
| Carbon (C) | 0.05-0.15% |
| Manganese (Mn) | 0.30-0.61% |
| Phosphorus (P) | 0.025% |
| Sulfur (S) | 0.025% |
| Silicon (Si) | 0.10-0.50% |
| Chromium (Cr) | 0.80-1.25% |
| Molybdenum (Mo) | 0.44-0.65% |
| Pipe Type | Price Range (USD) |
| ASTM A335 P12 Seamless Pipes | $800 – $1,700 |
For ASTM A335 P12 pipes, post-weld heat treatment (PWHT) is essential, particularly for thicker sections exceeding 13 mm. Preheating to around 120°C is often used for thinner sections to mitigate stress and prevent potential cracking during welding. This process ensures greater stability, reduces hardness, and maintains reliable mechanical integrity, making it ideal for high-temperature applications.
| Feature | P12 | P11 |
| Carbon Content | 0.05-0.15% | 0.05-0.15% |
| Yield Strength (Min) | 205 MPa | 310 MPa |
| Applications | High-Temperature, Low Stress | High-Temperature, High Pressure |
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We Kwality Steelage Pvt. Ltd. are professionally organized firm engaged in exporting and supplying Stainless Steel, Carbon Steel, Alloy Steel, Nickel Alloys, Duplex, Super duplex and other Ferrous & Non-Ferrous Metal products such as Pipes, tubes, Pipe, Tubes, Pipe Fittings, Piping Spools, LR Bends, Sheets, Plates, Rods, Flanges, Fasteners, Gaskets.
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