... *0.5-60apply to oil, aviation, smelt, food, water conservation, electric, chemical, medicine industryLow temperature steel tube16MnDG 10MnDG ... -20068-630*1-60Apply to oil refinery furnace tube and heat exchangermiddle pressure boiler tube10#20#16Mnpipe for transportation 10# 20# Q295ASTM A106A,B,CA53A ...