... ,DIN 2448,DIN1626,DIN17175, DIN1629Material10#,20#,Q235,Q345ST37.0,ST35.8,St37.2,St35.4/8,St42,St45,St52,St52.4A53B, A106B, API 5L ... ,BV,etcCapacity10,000tons/month Advantages1.without oxidation both outer wall and inner wall2.under high pressure without leakage3.high-precision4.high ...