EFW Electric Fusion Welding Pipes ASTM A671,ASTM A672,ASTM A691,CL10-CL23:CA55,B65,B70,C70

Hebei Senhai Pipeline Co., Ltd. manufacture and export ASTM A671,ASTM A672,ASTM A691 Electric-Fusion-Welded Steel Pipe for Atmosphoric and Lower Temperatures 
Pipe Grade-CA 55, CB60, CB65, CB70, CC60, CC65, CC70, CD80, CE50, CE60, DF65, CF70, CF66, CF71, CJ101, CJ102, CJ103, CJ104, CJ105, CJ106, CJ107, CJ108, CJ109, CJ110, CJ112, CJ113, CJ75, CP65, CP75 

Class No.-10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43, 50, 51, 52, 53 

ASTM A672-Electric-Resistance-Welded Steel Ppe for High-Pressure Service at Moderate Temperatues 

Pipe Grade: A45, A50, A55, B55, B60, B65, B70, C55, C60, C65, C70, D70, D80, E55, E60, H75, H80, J80, J90, J100, K75, K85, L65, L70, L75, N75 

Class 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43, 50, 51, 52, 53 

ASTM A691 Carbon and Alloy Steel Pipe, Electric-Fusion-Resistance For High-Pressure Service at High-Temperatures 

Pipe Grade-CM65, CM70, CM75, CMSH70, CMSH75, CMSH80, 1/2Cr, 1Cr, 2 1/4Cr, 3Cr, 5Cr, 9Cr, 91 

Class 10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42, 43, 50, 51, 52, 53, 60, 61, 62, 63, 70, 71, 72, 73 

NACE MR 0175/ISO 15156-2 Petroleum and Natural Gas Industries – Materials for Use in H2S Containing Environments in Oil and Gas Production. Part 2. Cracking resistant Carbon and Low Alloy Steels, and the Use of Cast Irons. 

1.3.3 Class designations are as follows (Note 1): 

Class Heat Treatment on Pipe Radiography, see Section Pressure Test, see: 

10 none none none 

11 none 9 none 

12 none 9 8.3 

13 none none 8.3 

20 stress relieved, see 5.3.1 none none 

21 stress relieved, see 5.3.1 9 none 

22 stress relieved, see 5.3.1 9 8.3 

23 stress relieved, see 5.3.1 none 8.3 

30 normalized, see 5.3.2 none none 

31 normalized, see 5.3.2 9 none 

32 normalized, see 5.3.2 9 8.3 

33 normalized, see 5.3.2 none 8.3 

40 normalized and tempered, see 5.3.3 none none 

41 normalized and tempered, see 5.3.3 9 none 

42 normalized and tempered, see 5.3.3 9 8.3 

43 normalized and tempered, see 5.3.3 none 8.3 

50 quenched and tempered, see 5.3.4 none none 

51 quenched and tempered, see 5.3.4 9 none 

52 quenched and tempered, see 5.3.4 9 8.3 

53 quenched and tempered, see 5.3.4 none 8.3 

60 normalized and precipitation heat treated none none 

61 normalized and precipitation heat treated 9 none 

62 normalized and precipitation heat treated 9 8.3 

63 normalized and precipitation heat treated none 8.3 

70 quenched and precipitation heat treated none none 

71 quenched and precipitation heat treated 9 none 

72 quenched and precipitation heat treated 9 8.3 

73 quenched and precipitation heat treated none 8.3 

Sincerely Yours,
Teddy Shi (Mr.)
General Manager
Hebei Senhai Pipeline Co.,Ltd.
Add.:No.7 Beihai Rd.,Economic & Technological Development Zone, Cangzhou City, Hebei Province, China
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