API SPEC 5L管線管的化學(xué)成分及機(jī)械性能
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管線管 API SPEC 5L
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尺寸公差
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標(biāo)準(zhǔn)
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外徑公差
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壁厚公差
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A25.A.B
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X42-X70
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D<60.3
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+0.41/-0.40mm
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D<73
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+20/-12.5%
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D≥73
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+15/-12.5%
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API SPEC 5L
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D≥60.3
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+0.75/-0.40mm
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D≥73
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+15/-12.5%
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D>73
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+15/-12.5%
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機(jī)械性能
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標(biāo)準(zhǔn)
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綱級
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屈服強(qiáng)度(MPa)
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抗拉強(qiáng)度(MPa)
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延伸率
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API SPEC 5L
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PSL1
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A25
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172
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310
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A
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207
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331
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B
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241
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414
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X42
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290
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414
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X46
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317
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434
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X52
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359
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455
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X56
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386
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490
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X60
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414
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517
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X65
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448
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531
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X70
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483
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565
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PSL2
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Min
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Max
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Min
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Max
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B
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241
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448
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414
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758
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X42
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290
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496
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414
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758
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X46
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317
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524
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434
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758
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X52
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359
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531
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455
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758
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X56
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386
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544
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490
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758
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X60
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414
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565
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517
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758
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X65
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448
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600
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531
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758
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X70
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483
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621
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565
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758
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X80
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552
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690
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621
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827
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化學(xué)成份
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標(biāo)準(zhǔn)
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鋼級
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C
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Mn
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P
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S
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Max
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Max
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Min
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Max
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Max
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API SPEC 5L
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PSL1
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A25II
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0.21
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0.60
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0.030
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0.030
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A25III
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0.21
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0.60
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0.45
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0.80
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0.030
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A
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0.22
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0.90
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0.030
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0.030
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B
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0.28
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1.20
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0.030
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0.030
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X42
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0.28
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1.30
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0.030
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0.030
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X46.X52.X56
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0.28
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1.40
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0.030
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0.030
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X60.X65.X70
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0.28
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1.40
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0.030
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0.030
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PSL2
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B
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0.24
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1.20
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0.025
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0.015
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X42
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0.24
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1.30
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0.025
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0.015
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X46.X52.X56
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0.24
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1.40
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0.025
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0.015
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X60.X65.X70.X80
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0.24
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1.40
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0.025
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0.015
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