... 60mm Brand:Tigersteel Certificate:ISO,API gb3091-2008, grade q235-b hot-galvanized steel pipes used on shed shed ... 2-6.5mm, 6-12m long 3 steel grade:q235-b,q195-b,st33.2 4 prompt delivery shed pipe1 ... length according to the requests of customers3 steel grade:q235-b,q195-b,st33.24 prompt delivery, for an ... can deliver the goods in 20days gb3091-2008, grade q235-b hot-galvanized steel pipes used on shed