1.Dimension:20*30-200*300mm 2.WT:0.8-16mm 3.Zinc coating 40-100g/m2 4.Standards: BS 1387,ASTMA53 5.Material:Q195-345 COMMODITYASTM A53 BS1387 Pre-galvanized Rectangular PipeDimension20*30-200*300mmTHICKNESS0.8mm-16mmZINC COATHot dip: 275-290g/m2Crane galvanized:300-500g/m2Pre-galvanized: 40-80 g/m2Cold/electro-galvanized:<40 g/m2LENGTH 2m-12m or customizedMATERIAL Q235,Q345,B,X42,X52,X60,X65, ...