Model Number: SINO-steel tubes-3 Brand Name: SINO sources Key Specifications/Special Features: Standard:GB/T3091–2001,BS1387–1985,DINEN10025,DIN2440,EN10219,JISG3444:2004,ASTMA53,ASTMA500,API5L.SteelGrade:Q235,Q345,S235JR,S275JR,S355,S355JR,S355J2H,STK400,STK50API5L:A,B,X42,X46,X52,X56,X60,X65X70End:squareends(straightcut,sawcut,andtorchcut).orbeveledforwelding,beveled,Surface:lightlyoiled,hot-dipgalvanized,electrogalvanized,black,bare,varnishcoating/anti-rustoil,protectivecoatings(coaltarepoxy,fusionbondepoxy,3-layersPE)Packing:plasticplugsinbothendswithseveralsteelstrips,twotagsoneachbundle,wrappedinwaterproofpaper,PVCsleeve,andsackclothwithseveralsteelstrips,plasticcapsTest:chemicalcomponentanalysis,mechanicalproperties(ultimatetensilestrength,yieldstrength,elongation),technicalproperties(flatteningtest,bendingtest,blowtest,impacttest),exteriorsizeinspection,hydrostatictest,X-raytestThirdpartyinspection:SGS,BV,Lloyds