... Pipe Standard: ASTM A53,BS1387,BS4568,EN39 Size: 1/2"-3" Thickness:1.2-3.5mm Length:3-8meter (ASTM A53, ... Galvanized Steel PipeDIAMETER:DN15-DN200O.D: 21.3-89mmWall Thickness:1.2-3.5mmLength: 3 to 8 meterGrade:Q195 Q235 ... Chemical (Maximum) C - 0.20%, SI - 0.05%, MN - 1.40%, P - 0.04%, S - 0.045%, AL - Min. 0 ... 60% of the OD of tube.5. STRAIGHTNESS: 1 in 500 (In 1 meter it should not exceed 3mm).6. ZINC ...