Seamless Alloy Steel Tubes:1) manufacture seamless Alloy steel pipe/tube2) Round pipe range from 19.05 to 610mm in outside diameters3) Thickness ranges from 2.5to 50mm4)Standard:ASTMA106, ASTMA213, ASTMA333, ASTMA335, ASTMA519, DIN171755) Material:10#, 20G, T5, T9, T11, T22, P5, P11, P22, 15MO3,...