... -frequency welded,ExtrudedApplication:Structural steel.Construction building,Projext,indutry etc.Certifications:CO,CQ,MTC,FORM-E, ... size .FOB Port:Shanghai, TianjinPayment Terms:30%TT deposit,70%TT before shipment.Galvanized Steel Tube Specifications ... Steel Tube Applications :Galvanized steel tube is divided into :cold galvanized steel pipe, hot dip galvanized steel pipe, cold galvanized steel pipe ...