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              Home - Products -套管和油管用無縫鋼管

              套管和油管用無縫鋼管

              套管和油管用無縫鋼管
              標準:
              API SPEC 5CT —— 美國石油學會標準
              用途:
              用于油井用套管和油管的無縫鋼管
              主要生產鋼管牌號:
              J55、K55、N80、L80、P110等

              尺寸公差:

               

              鋼管種類

              外徑(D)

              壁厚(S)

              冷拔管

              鋼管外徑(mm)

              允許偏差(mm)

              允許偏差(mm)

              <114.3

              ±0.79

              -12.5%

              ≥114.3

              -0.5%,+1%

              力學性能:

              標準

              牌號

              抗拉強度(MPa)

              屈服強度(MPa)

              伸長率(%)

              硬度

              API SPEC 5CT

              J55

              ≥517

              379~552

              查表

               

              K55

              ≥517

              ≥655

               

              N80

              ≥689

              552~758

               

              L80(13Cr)

              ≥655

              552~655

              ≤241HB

              P110

              ≥862

              758~965

               

              化學成分:

              標準

              牌號

              化學成分(%)

              C

              Si

              Mn

              P

              S

              Cr

              Ni

              Cu

              Mo

              V

              Als

              API SPEC 5CT

              J55K55

              (37Mn5)

              0.34~0.39

              0.20~0.35

              1.25~1.50

              ≤0.020

              ≤0.015

              ≤0.15

              ≤0.20

              ≤0.20

               
               

              ≤0.020

              N80

              (36 Mn2V)

              0.34~0.38

              0.20~0.35

              1.45~1.70

              ≤0.020

              ≤0.015

              ≤0.15

               
               
               

              0.11~0.16

              ≤0.020

              L80(13Cr)

              0.15~0.22

              ≤1.00

              0.25~1.00

              ≤0.020

              ≤0.010

              12.0~14.0

              ≤0.20

              ≤0.20

               
               

              ≤0.020

              P110

              (30CrMo)

              0.26~0.35

              0.17~0.37

              0.40~0.70

              ≤0.020

              ≤0.010

              0.80~1.10

              ≤0.20

              ≤0.20

              0.15~0.25

              ≤0.08

              ≤0.020

               

               
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