Russian standard straight seam welded pipe grade

 　　GOST 10704-91，GOST 10705-80，GOST 10706   GOST C90

　　Ø 57-530 mm

　　Russian Standard GOST 10704 Arc-welded straight seam steel pipe. Range of sizes LSAW

　　Similar standards in China are GB/T 30063-2013 Structural use of straight seam submerged arc welded steel pipes, which can also comply with applicable standardsGB/T3091-2008Production standard for low-pressure fluid steel pipes GB/T9711.1-2 -1997 Standard for the production and use of petroleum and natural gas steel pipes。

　　C345 C355 ERW pipe Russian Standard GOST10705-50

　　GOST 20295standard K55/K52/K56 Longitudinally welded pipes

　　C355Equivalent to domestic Q355

　　K52amount to Q460



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