化肥专用管 石油裂化管 

20G Q345 1Cr5Mo （GB6479—2000）   12CrMo 15CrMo 20 （GB9948—88 )

18*3-4

114*5-6-8-8.5-9-10-11-12-12.5-14

22-3-4-5

127*6-10-12-14-16

25-3-3.5-4-4.5

133-10-12-14-16-18-20

27*4-5-5.5

152*7-8-9-10-12-14-18-25

32*3.5-4-4.5-5

159*6-6.5-7-8-8.5-10-12-14-16-18-25

34*3-4-4.5-5-6.5

219*7-8-10-12-13-14-15-16-18-20-25

38*3-4-5

273*8-9-10-11-12-13-14-15-16-18-20-22-25-30

45*4-5

325*8.5-9-9.5-10-12-13-15-16-17-18-22-25-28-30

48*3.5-4-4.5-5-6-7

326*9.5-11-15-19-28-30

51*5-6

377*9.5-10-11-14-15-16-25

57*5-6

406*9.5-13-17-26-32

60*4-4.5-5.5-6-7-8-9-10

426-10-13-17-22-24-35

76*5-6-7-8-10

457*9.5-10-11-14-19-24-35

89*4-4.5-5-6-6.5-7-8-9-10-11-12-14

508*15-20-26

108*6-7-8-9-10-12

530*15-18-26-28