Greenhouse Galvanized Steel Pipe Standard: ASTM A53,BS1387,BS4568,EN39 Size: 1 ... Thickness:1.4-3.5mm Length:3-8meter (ASTM A53,BS1387)Greenhouse Galvanized Steel PipeDIAMETER:DN15-DN200O. ... 3 to 8 meterGrade:Q195 Q235 ST37 ST52Standard: ASTM A53,BS1387,BS4568,EN39Delivery status:Hot dipped galvanizedZinc ... tubes supplied comply with this Standard. (ASTM A53,BS1387) Greenhouse Galvanized Steel Pipe