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... Standards:GB/T3091-2001,GB/T9711.1-1997,API 5L, ASTM A53,EN10210/10219, IS 1239 Applications:civil construction, petrochemical industry, light...
..., ST37 Standards:GB/T3091-2001,GB/T9711.1-1997,API 5L, ASTM A53,EN10210/10219 Applications:civil construction, petrochemical industry, light industry,...
..., ASTM A53/106, ASTMA500, ST37 Standards:GB/T3091-2001,GB/T9711.1-1997,API 5L Applications:civil construction, petrochemical industry, light industry, mainly liquid transferring, mechanical parts etc...
...:GB/T3091-2001,GB/T9711.1-1997,ASTM A106/53, API 5L /5CT Applications:civil construction, petrochemical industry, light industry, mainly liquid transferring, mechanical parts etc Cangzhou High Booming Pipe E...
..., ST37 Standards:GB/T3091-2001,GB/T9711.1-1997,API 5L, ASTM A53,EN10210/10219 Applications:civil construction, petrochemical industry, light industry, mainly liquid...