... D,Grade 50ENS185,S235JR,S235JO,E335,S355JR,S355J2JISSS330,SS400,SPFC590UsageUsed For Water, Gas, Stream, Combustible Fluids And Other Liquid DeliveryEndsPlain, Beveled ... Trading,OthersN/A1.Some pictures about Galvanized square steel tube for your reference2.Shipping3.Packing4.Company certification5.SGS inspectionIf you have ...