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ASTM A335 Pipes

ASTM A335 Pipes

Material: ASTM A335 Pipes;
Size range: OD: 88.9~1422mm (3''~56''); WT: 2.11~140mm (Sch10 and above);
Application: For the low and medium pressure boiler and steam header pipes; For the high-pressure boiler and steam pipes, and the petrochemical industry pipes; Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

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Product Details

ASTM A335 Pipes

 


The high pressure pipe is always used in high pressure boilers (which the operating pressure is over 9.8Mpa, the operating temperature is between 450℃ and 650℃) as the heating surface pipe, and economizer, superheater, reheater and petrochemical industry, etc.

 

The A335 pipes are generally called chrome moly pipe as they have a high level of Chromium and Molybdenum presence in it. While Molybdenum increases the overall strength, resistance, elasticity, hardenability and overall quality, moly ensures that the material is more resistant to softening, restrains the growth of grains and lessens the chances of embrittlement. It is the single additive that is responsible for the increase in high temperature resistance and it also improves the corrosion resistance to steel.

 

1. Standards

ASTM A335 ——Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

 

2. Application

For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

 

3. Steel pipes No. of main production:

ASTM A335 Grade P5, P9, P11, P12, P22, P91, P92

 

4. Dimensional Tolerance

Pipe typesOD (mm)ToleranceWT (mm)Tolerance
High Pressure Boiler Tube219~457±1.0%≤20-10% ~ +12.5%
20~40-10% +10%
457~1422±0.9%>40~70-7%, +9%
>70~20-6%, +8%


5. Chemical Requirements

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6. Tensile Requirements

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Please contact sales@xoosc.com for your project requirements.

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