... .0831 St52/DIN1629/4 1.0832 St52.4/ASTM A210 GR. C precision seamless steel pipe 1.Steel Grades:RSt 34 ... ,5; 5,0; 5,5; 6,055; 60; 651,5; 1,8; 2,0; 2,2; 2,5; 2,8; 3,0; 3,5; 4,0; 4,5; 5 ... ,0; 5,5; 6,070; 75; 803,0; 3,5; 4,0; 4,5; 5,0; 5,5; 6,0 Mechanical ... .0831 St52/DIN1629/4 1.0832 St52.4/ASTM A210 GR. C precision seamless steel pipe