... 35#, 45#, 16Mn,Q345B 2 excutive standard:GB/T8162-1999 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 Φ 6-610×1-70 Part Specification List ... 35#, 45#, 16Mn,Q345B structure pipe GB/T8162-1999 (Sabrina)