Alloy tube and seamless tube both have relationship and difference, can not be confused. Alloy pipe is steel pipe in accordance with the production material (that is, material) to define, as the name suggests is made of alloy pipe; Seamless pipe is defined in accordance with the production process (seamless) of steel pipe, which is different from seamless pipe is welded pipe, including straight seam welded pipe and spiral pipe.

A335P5 alloy steel pipe belongs to alloy pipe is mainly used for low and medium pressure boiler (working pressure is generally not more than 5.88Mpa, working temperature below 450℃) heating surface pipe; Used for high pressure boiler (working pressure is generally above 9.8Mpa, working temperature between 450℃ ~ 650℃) heating surface pipe, economizer, superheater, reheater, petrochemical industry pipe, etc.

Other materials are:16-50Mn、27SiMn、40Cr、Cr5Mo、12Cr1MoV、12Cr1MovG、15CrMo、15CrMoG、15CrMoV、13CrMo44、T91、27SiMn、25CrMo、30CrMo、35CrMo、35CrMoV、40CrMo、45CrMo、Cr9Mo、10CrMo910、15Mo3、A335P11、P22、P91、T91。