Galvanized Steel Pipe (ASTM A53) ZHEJIANG BESTSUPPLIERS IMPORT & EXPORT CO., LTD. Base Info Model NO.:ASTM A53Type:SeamlessTechnique:Hot RolledSurface Treatment:GalvanizedUsage:Pipeline TransportSection Shape:RoundTrademark:QIANYIOrigin:China Description Pre:Steel Pipe Tube Next:Carbon Seamless Steel Pipe (API 5L X52 140)