... ,GB, SH, HG,QOST,ETC.Certification:ISO9001:2000Applications range: Petroleum, chemical, power, gas, metallurgy, shipbuilding.construction,water and nuclear power etc ... test, Water pressure test, Crystal rot test, Heat treatment, NDTChemical Composition of MaterialComposition Material201202304316431C≤0.15≤0.15≤0.08≤0 ...