Greenhouse Galvanized Steel Pipe Standard: ASTM A53,BS1387,BS4568,EN39 Size ... 1.2-3.5mm Length:3-8meter (ASTM A53,BS1387)Greenhouse Galvanized Steel Pipe DIAMETER:DN15-DN200O.D: 21.3- ... Chemical (Maximum) C - 0.20%, SI - 0.05%, MN - 1.40%, P - 0.04%, S - 0.045%, AL - Min. 0.02 ... ZINC COATING: Minimum local coating thickness on the outside surface 40 microns.(GALVANIZING)7. MARKING: a) We can emboss mill ...