... -1999 3 best quality Supply 10#, 20#, 35#, 45#, 16Mn,Q345B structure pipe GB/T8162- ... 1999 Commodity nameMain materialUsageExecutive standardSpecification scopeStructure pipe10#,20#,35#,45#,16Mn,Q345B etcGeneral structure fabricationGB/T8162-1999 ... -9-12-15-18-20-25273×30-35-38-40-45-50299×8-12-16- ... asxydsabrinaAnshan Xiyida Metallurgy Co., Ltd 10#, 20#, 35#, 45#, 16Mn,Q345B structure pipe GB/T8162-1999 ( ...