... petroleum cracking,high-pressure boilers 1. Seamless alloy steel tube2. Standard&steel grade: ASTM A209 T1,ASTM A213 T2,T5,T9 ... ,T22,T23,T91,T92,DIN17175 15Mo3,10CrMo910,12CrMo195,13CrMo44,and equivalent standard&material.3. OD:13.2mm-127mm, W.T:2mm-12 ... -coating,black-lacquer,end plastic caps to be confirmed.8. Standard mill packing: in bundles tied with steel strips. Tubes of ...