ASTM A335 is an American standard (ASTM) for seamless ferritic alloy steel nominal pipes designed for high-temperature service. Its base material consists of chromium-molybdenum alloy, with varying proportions of alloying elements (such as chromium, molybdenum, vanadium, niobium, etc.) to form multiple grades, catering to different high-temperature and high-pressure operating conditions.
ASTM A335 seamless steel pipes are primarily used in high-temperature and high-pressure piping systems in industries such as power generation and petrochemical. In the power sector, they are commonly employed in components like boiler superheaters, reheaters, and main steam pipelines for power plant boilers. These components must withstand high-temperature and high-pressure steam exposure, requiring exceptional high-temperature strength, oxidation resistance, and creep resistance from the pipe material.
Specification
Grade:P1, P2,P5,P9,P11,P91,P92
OD:10.3-660mm
WT:1.6-60mm
Length:5.8m-12m or random length
Technical: Quenching & Tempering
Application: Gas-fired power plant, coal-fired power plant, headers and steam lines, Feedwater pipes, superheaters, and reheaters.
Testing items:
Non-destructive testing (UT ultrasonic, RT radiographic testing).
Hydraulic pressure test (to ensure pressure bearing capacity).
Supplementary requirements (such as grain size, hardness test, etc.).
Chemical Composition
Mechanical Properties
Diameter
GNEE A335 alloy steel pipe for sale
