... 3 best quality Supply 10#, 20#, 35#, 45#, 16Mn,Q345B structure pipe GB/T8162-1999 Commodity nameMain materialUsageExecutive standardSpecification scopeStructure pipe10#,20 ... 14-16-18-20-30-40 (reference picture of structure pipe used in structure fabrication)Contact person: Miss Sabrina Tel: 0086-412-8810286Fax ... Metallurgy Co., Ltd 10#, 20#, 35#, 45#, 16Mn,Q345B structure pipe GB/T8162-1999 (Sabrina)