... America etc. 3.Standard: GB/AISI/ASTM/J Ti alloy pipe1.Grade: ASTMA106,10#,20#,Q235B,Q195,45#2 ... G3454-1998 DIN 1629-1984 3.Applicant seamless steel tube for high pressure boilers Grade:20G,20MnG,25MnG, ... ,ASTM SA179,SA192,BS30595. ApplicantHigh pressure seamless steel tube for chemical Fertilizer EguipmentsGrade:10,20G,Q345,Q390,10MoVNb ... ,reheater,superheater and steam pipeline of boilers. Ti alloy bar