... :ASTM A213/ASME SA213 3.Grade:T2 T5 T11 T12 T22 T91 T92 4.Usage:boilers, Features: 1) Executive standard: contract ... ) Steel kind / steel grade: 15Cr, 20Cr, SCM 415H T5, T11, T22, T91 (P5, P11, P22, P91) Product name: ASTM A213 seamless ... steel pipePlace of Origin: China Grade:T2 T5 T11 T12 T22 T91 T92 Wall thickness: sch10s,sch10,sch20,sch30,std,sch40s ...