Txheej txheem cej luam
Pipeline steel phaj yog siv los fabricate loj txoj kab uas hla welded kav uas thauj cov roj thiab natural gas, kuj lub npe raws li cov yeeb nkab steel phaj. Tam sim no ntau thiab ntau tus neeg hauv ntiaj teb tsom ntsoov rau kev tiv thaiv peb ib puag ncig, lub zog tshiab huv huv natural gas yog dav siv los ntawm cov kav dej. Cov yeeb nkab steel hlau no muaj peev xwm tiv taus siab, atmospheric corrosion thiab qis kub ib puag ncig. API X120 muab los ntawm peb muaj cov khoom siv kho tshuab siab dua li qib thoob ntiaj teb.
Tag nrho cov qib steel ntawm Pipeline Steel Phaj
STANDARD | STEEL Qib |
API 5L PSL1 / PSL2 | Qib A, Qib B X42, X46, X52, X56, X60, X65, X70, X80, X100, X120 L245, L290, L320, L360, L390, L415, L450, L485, L555 |
Mechanical Property ntawm pipeline steel phaj
Qib | Permissible yield point ratio | Yield zog MPa (min) | Tensile zog MPa | Elongation% (min) | |
API 5L | TS EN 10208-2 | ||||
API 5L Gr. B | L245 NIB | ≤ 0.85 | 240 | 370-490 Ib | 24 |
API 5L X 42 | L290 Ib | ≤ 0.85 | 290 | 420-540 Ib | 23 |
API 5L X 52 | L 360 NIB | ≤ 0.85 | 360 | 510-630 : kuv | |
API 5L X 60 | L415 NIB | ||||
API 5L Gr. B | L 245 MB | ≤ 0.85 | 240 | 370-490 Ib | 24 |
API 5L X 42 | L 290 MB | ≤ 0.85 | 290 | 420-540 : kuv | 23 |
API 5L X 52 | L 360 MB | ≤ 0.85 | 360 | 510-630 : kuv | |
API 5L X 60 | Loj 415 MB | ||||
API 5L X 65 | L 450 MB | ≤ 0.85 | 440 | 560-710 Ib | |
API 5L X 70 | L 485 MB | ≤ 0.85 | 480 | 600-750 | |
API 5L X 80 | L 555 MB | ≤ 0.90 | 555 | 625-700 Nws | 20 |
Technical Requirements rau pipeline steel phaj
● Hardness Values test
● Kev ntsuas qhov hnyav (DWTT)
● Ultrasonic Examination (UT)
● Tsawg kub cuam tshuam kev sim
● API pipeline steel txheem dov
Cov kev pabcuam ntxiv
● Kev tshuaj xyuas cov khoom.
● Kev soj ntsuam thib peb.
● Simulated tom qab vuam kev kho cua sov (PWHT).
● Kev ntsuas kub qis dua cuam tshuam kev ntsuas raws li cov neeg siv khoom xav tau.
● Muab daim ntawv pov thawj Orginal Mill xeem raws li EN 10204 FORMAT 3.1/3.2.
● Tua blasting thiab painting, Txiav thiab vuam raws li ib tus neeg siv kawg xav tau.