... 10#, 20#, 35#, 45#, 16Mn,Q345B 2 excutive standard:GB/T8162-1999 3 best quality Supply 10#, 20#, ... -1999 Commodity nameMain materialUsageExecutive standardSpecification scopeStructure pipe10#,20#,35#,45#,16Mn,Q345B etcGeneral structure fabricationGB ... 5-2.5-316×1.5-2.5-418×2.3-4-520×2.5-3-524×2. ... -8851567Skype: asxydsabrinaAnshan Xiyida Metallurgy Co., Ltd 10#, 20#, 35#, 45#, 16Mn,Q345B structure pipe GB ...