X42 seamless steel yeeb nkab, tseem hu ua L290 pipeline steel, yog qis - carbon microalloy steel yeeb nkab uas ua raws li API SPEC 5L tus qauv.
API 5L tus qauv faib cov kav dej rau hauv ob qib: PSL1 (zoo tib yam) thiab PSL2 (zoo tshaj plaws). X42 PSL2 yog nyob rau tom kawg thiab yuav tsum ua kom tau raws li cov kev cai nruj dua rau cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab tsis yog - kuaj kev puas tsuaj. Piv txwv li, nws cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.24%, thiab cov ntsiab lus phosphorus thiab sulfur tsawg dua lossis sib npaug li 0.015%, uas yog qis dua li PSL1 tus qauv. Tsis tas li ntawd, PSL2 yuav tsum muaj tag nrho - qhov loj me 0℃longitudinal cuam tshuam lub zog ntawm Ntau dua lossis sib npaug ntawm 41J thiab kev cuam tshuam lub zog ntawm ntau dua lossis sib npaug rau 27J, ua kom cov khoom siv tiv thaiv kom tawg tawg hauv qis - qhov kub thiab txias. Tsis tas li ntawd, PSL2 cov kav dej yuav tsum tau kuaj xyuas hydrostatic (ntawm 1.5 npaug ntawm qhov kev tsim siab) thiab ultrasonic tsis yog- kuaj kev puas tsuaj ntawm cov yeeb nkab- los ntawm- yeeb nkab hauv paus, nrog cov nqi tsis raug tswj hauv qab 0.3%, tshem tawm qhov muaj kev nyab xeeb ntawm qhov chaw.
Dimension Tolerances ntawm L290 X42 PSL2 Pipes
Chemical Structure ntawm API 5l Qib X42 Pipe
| X42 PSL1 | X42 PSL 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| Qib | P | C | S | Mn | P | C | S | Mn |
| X42 | 0.03 | 0.26 | 0.03 | 1.30 | 0.025 | 0.22 | 0.015 | 1.40 |
Mechanical Properties X42 Pipe Khoom
| API 5L Qib | Yield zog min. (ksi) | Tensile zog min. (ksi) | Yield rau Tensile Ratio (max.) | Elongation min. %1 |
|---|---|---|---|---|
| API 5L X42 Tube | 42 | 60 | 0.93 | 23 |
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