... 2small order&customized size available 3Fast delivery time High Quality Square Steels Size Wall thickness (W.T.)15mm ... 92, GB/T6728-2002MaterialsQ195,Q215,Q235,Q345Product CategoryMetallurgy,Mineral &EnergyTechniqueWeldedPacking1.Big OD:in bulk2.Small OD:packed ... 92, GB/T6728-2002MaterialsQ195,Q215,Q235,Q345Product CategoryMetallurgy,Mineral &EnergyTechniqueWeldedPacking1.Big OD:in bulk2.Small OD:packed ...