Seamless boiler tube and pipe sizes OUTER DIAMETER (OD) 10,2 139,7 mm (from 26.9 mm manufactured as hot rolled) WALL THICKNESS (WT) 0,5 â?? 16,0 mm (from 2.6 mm manufactured as hot rolled) EUROPEAN STANDARDS EN 10216-2, DIN 2448, BS 3059-1, BS 3059-2, BS 3602-1, BS 3604-1, NF A 49-211, NF A 49-213, UNI 4991, STN a �?SN 42 5715, STN a �?SN 42 5716, PN-H 74252 RUSSIAN STANDARDS GOST 8732 AMERICAN STANDARDS ANSI B36.10, ASME B36.10 Steel grades for tubes intended for pressure equipment Steel for pressure equipment, used at higher temperatures â?? Boiler tubes EN 10216-2 P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 7CrWVMoNb9-6, 7CrMoVTiB10-10, 10CrMo5-5, 13CrMo4-5, 10CrMo9-10, 25CrMo4, X11CrMo5+I, X11CrMo5+NT1, X11CrMo5+NT2, X10CrMoVNb9-1 ASTM A 106 Grade A, Grade B, Grade C ASTM A 209 Grade T1, Grade T1a, Grade T1b ASTM A 210 Grade A-1, Grade C ASTM A 556 Grade A2, Grade B2, Grade C2 ASTM A 335 Grade T/P11, Grade T/P12, Grade T/P22, Grade T/P24 ASTM A 213 Grade T/P11, Grade T/P12, Grade T/P22, Grade T/P24 Steel for tubes intended for pressure equipment EN 10216-1 P195TR1, P235TR1, P265TR1, P195TR2, P235TR2, P265TR2. ASTM A 53 Grade A, Grade B Steel for tubes made from fine-grained steel EN 10216-3 P355N, P460N, P355NH, P460NH, P275NL1, P355NL1, P460NL1, P275NL2, P355NL2, P460NL2. Steel tubes for low temperatures EN 10216-4 P215NL, P265NL. ASTM A/SA 333 (A999) Grade 1, 3, 6, 7 ASTM A/SA 334 (A1016) Grade 1, Grade 6 ASTM A/SA 524 (A530) Grade II Steel comparison according to DIN and EN standards. The fine-grained steels are supplied in 4 types of qualities. DIN 17179 Type Marking Steel grades Basic StE 255, 285, 355, 420, 460 High â?? temperature WStE 255, 285, 355, 420, 460 Low â?? temperature TStE 255, 285, 355, 420, 460 Low â?? temperature custom EStE 255, 285, 355, 420, 460 EN 10216 â?? 3 Marking Steel grades Basic P-N 355, 460 High temperature P-NH 355, 460 Low temperature P-NL1 275, 355, 460 Low temperature custom P-NL2 275, 355, 460