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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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