... discussedFeatures & advantage1.material: Q195,Q235,Q3452.equipments: defectometer, gas cutting machine, plate-shearing machine, bender, drilling machine, lathe, arc-submerged welder, flaw defactor, glossing ... arc-submerged welder----testing by flaw defactor----polish by glossing machine----galvanizing----testing by posiTest DFTsteel tower pictures Certificates: Hongyaun Organization ...