Shanghai Tongbao Industrial Co., Ltd. [China]

Thickness:2 -16mm Standard:ASTMA 500 or EN10219 Grade: Q195-Q345 prime quality, competitive price,good sources

Thickness:2-16mmStandard:ASTM,DN, GB, JISGrade: Q195-Q345

prime quality, competitive price

surface:black, bright and galvanized

square pipe