1:Boiler Pipe(ASTM A335 P5,P9,P11,P22,P91, P92 Etc.)
Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
2:Line Pipe(API 5L Gr.B X42 X52 X60 X65 X70 Etc)
Seamless Pipeline Used For High Quality Transport The Oil, Steam And Wat...
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