... --219mm W.T:0.8--4.5mm Galvanized steel pipe for greenhouseZinc coating:70-380g/m²Material :Q195-Q235chemical composition:C ... (195-225Mpa),tensile strength(350-385Mpa), elongation:>=28USE:Widely applicable for ordinary uses in water,gas,air and steam,also be ... to contact me at your convenience timely,I am waiting for your early reply!Thanks very much!!! Galvanized steel pipe ...