... Certificate:ISO,API gb3091-2008, grade q235-b hot-galvanized steel pipes used on shed shed pipe 1 ... steel grade:q235-b,q195-b,st33.2 4 prompt delivery shed pipe1 hot galvanized pipe, high quality hot galvanized items2 ... to the requests of customers3 steel grade:q235-b,q195-b,st33.24 prompt delivery, for an order less ... goods in 20days gb3091-2008, grade q235-b hot-galvanized steel pipes used on shed