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API 5L PSL1 PSL2 Gr.B X42 X52 X60 Seamless Steel Pipe Line
Maemo: API SPEC 5L、ISO3183、GB/T9711 Sehlopha sa B X42 X52 X56 X60 X65 Ka PSL1 PSL2;Kopo: E sebelisetsoa ho tsamaisa khase, metsi le peterole indastering ea oli le ea tlhaho.
Maemo: API SPEC 5L、ISO3183、GB/T9711 Sehlopha sa B X42 X52 X56 X60 X65 Ka PSL1 PSL2;Kopo: E sebelisetsoa ho tsamaisa khase, metsi le peterole indastering ea oli le ea tlhaho.