





ASTM A335 Alloy Seamless Steel Pipe
ASTM A335 Alloy Seamless Steel Pipe Supplier
ASTM A335 alloy seamless steel pipe is made of high strength, high temperature resistant alloy steel material, widely used in oil, natural gas, chemical, electric power, boiler and other high temperature and high pressure environment. Excellent corrosion resistance, high temperature resistance and mechanical properties, suitable for use in extreme conditions.
High Temperature Resistant Alloy Steel Pipe Description
- High temperature tolerance: can withstand high temperature environment, suitable for boilers, steam pipes and other high temperature equipment.
- High strength and oxidation resistance: It can work stably under high pressure and oxidation environment.
- Seamless design: The seamless steel pipe structure is stronger, reducing welding defects and increasing the service life of the pipe.
- Various specifications: Provide different outer diameter, wall thickness, length and other specifications to meet different engineering needs.
- Corrosion resistance: Good corrosion resistance, suitable for harsh working environment.
Specifications and dimensions:
Outer diameter (OD): 20mm to 1000mm
Wall thickness (WT): 2mm to 100mm
Length: 6m, 12m,custom length or standard length
Material options: different material models available (P5, P9, P22, P91)
High Temperature Seamless Steel Pipe Technical
Chemical Components & Mechanical Properties
Grade | Chemical composition(%) | |||||||||
C | Si | Mn | Cr | Mo | P | S | Al | Cu | V | |
P5 | 0.05-0.15 | 0.50-0.80 | 0.30-0.60 | 4.50-6.00 | 0.90-1.20 | ≤ 0.025 | ≤ 0.025 | ≤ 0.030 | ≤ 0.25 | ≤ 0.10 |
P9 | 0.05-0.15 | 0.50-0.80 | 0.30-0.60 | 4.00-6.00 | 0.90-1.20 | ≤ 0.025 | ≤ 0.025 | ≤ 0.030 | ≤ 0.25 | ≤ 0.10 |
P22 | 0.05-0.15 | 0.50-0.80 | 0.30-0.60 | 2.25-2.75 | 0.90-1.10 | ≤ 0.025 | ≤ 0.025 | ≤ 0.020 | ≤ 0.25 | |
P91 | 0.05-0.15 | 0.20-0.50 | 0.30-0.60 | 8.00-9.50 | 0.85-1.05 | ≤ 0.020 | ≤ 0.010 | ≤ 0.050 | ≤ 0.25 | 0.18 – 0.25 |
Grade | Mechanical properties | ||||
Tensile Strength | Yield strength | Elongation | Hardness | Impact toughness | |
P5 | 485 – 620 MPa | ≥ 205 MPa | ≥ 20% (on a 50 mm long specimen) | HB : ≤ 250 HRC : ≤ 25 |
Meets the requirements of the Charpy impact test, usually a minimum requirement at -20°C. |
P9 | 485 – 620 MPa | ≥ 205 MPa | |||
P22 | 415 – 585 MPa | ≥ 205 MPa | |||
P91 | 585 – 725 MPa | ≥ 415 MPa |
ASTM A335 Alloy Seamless Steel Pipe Applications
- Oil and gas industry: Used in oil pipelines, high-temperature oil and gas transmission pipelines.
- Chemical industry: high temperature pipeline system for chemical fertilizer and chemical plant.
- Power industry: Used in boilers, steam pipelines, heat exchangers and other equipment.
- Other high temperature applications: suitable for steel, ships, aviation and other fields.
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