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              Home - Products -管線用無縫鋼管

              管線用無縫鋼管

              管線用無縫鋼管

              標準:
              API SPEC 5L——美國石油學會標準
              GB/T9711.2——中國國家標準
              用途:
              用于石油、天然氣工業中的氧、水、油輸送管
              主要生產鋼管牌號:
              B、X42、X52、X60、X65、X70

              尺寸公差:

              鋼管種類

              鋼管外徑(D)

              鋼管壁厚(S)

              管體

              鋼管外徑 (mm)

              允許偏差(mm)

              鋼管外徑(mm)

              允許偏差(mm)

              ≥60.3且S<20

              ±0.75%

              ≤73.0

              +15%,-12.5%

              ≥60.3且S≥20

              ±1.00%

              >73.0且S<20

              +15%,-12.5%

               
               

              >73.0且S≥20

              +17.5%,-10

              力學性能:

              標準

              牌號

              抗拉強度(MPa)

              屈服強度(MPa)

              屈強比

              伸長率(%)

              0℃沖擊功

              Akv(J)

              熱處理狀態

              API SPEC 5L

              GB/T9711.2

              B

              ≥415

              245~440

              ≤0.80

              22

              ≥40

              正火

              X42

              ≥415

              290~440

              ≤0.80

              21

              ≥40

              正火

              X52

              ≥460

              360~510

              ≤0.85

              20

              ≥40

              正火

              X60

              ≥520

              415~565

              ≤0.85

              18

              ≥40

              正火

              X65

              ≥535

              450~570

              ≤0.90

              18

              ≥40

              淬火+回火

              X70

              ≥570

              485~605

              ≤0.90

              18

              ≥40

              淬火+回火

              化學成分:

              標準

              牌號

              化學成分(%)

              CEV(%)

              C

              Si

              Mn

              P

              S

              V

              Nb

              Ti

              API SPEC 5L

              GB/T9711.2

              B

              ≤0.16

              ≤0.40

              ≤1.10

              ≤0.020

              ≤0.010

              ≤0.42

              X42

              ≤0.17

              ≤0.40

              ≤1.20

              ≤0.020

              ≤0.010

              ≤0.05

              ≤0.05

              ≤0.04

              ≤0.42

              X52

              ≤0.20

              ≤0.45

              ≤1.60

              ≤0.020

              ≤0.010

              ≤0.10

              ≤0.05

              ≤0.04

              ≤0.45

              X60

              ≤0.21

              ≤0.45

              ≤1.60

              ≤0.020

              ≤0.010

              ≤0.15

              ≤0.05

              ≤0.04

              協議

              X65

              ≤0.16

              ≤0.45

              ≤1.60

              ≤0.020

              ≤0.010

              ≤0.06

              ≤0.05

              ≤0.06

              ≤0.45

              X70

              ≤0.16

              ≤0.45

              ≤1.70

              ≤0.020

              ≤0.010

              ≤0.06

              ≤0.05

              ≤0.06

              ≤0.45

              注:
              1.0.015%≤Altot<0.06%;N≤0.012%;Al/N≥2/1;Cu≤0.25%;Ni≤0.30%;Cr≤0.30%;Mo≤0.10%
              2.V+Nb+Ti≤0.15
              3.X60、X65、X70經協商Mo≤0.35%

               
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              86+514+86529012
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