API 5L feem ntau yog hais txog kab yeeb nkab-API 5L kab yeeb nkab, cov yeeb nkab kab yog thauj cov roj, chav thiab dej rho tawm hauv av mus rau cov chaw lag luam roj thiab roj los ntawm cov kab yeeb nkab.Cov kab yeeb nkab muaj cov yeeb nkab seamless thiab welded steel yeeb nkab.Qhov xaus muaj qhov xaus, threaded xaus thiab qhov (socket) xaus;txoj kev sib txuas yog welding, coupling kev twb kev txuas, qhov (socket) txuas, thiab lwm yam.
| PSL | Kev Xa Khoom | Qib yeeb nkab |
| PSL1 | Raws li dov, normalized, normalizing tsim | A |
| Raws li-dov, normalizing dov, thermomechanical dov, thermo-mechanical tsim, normalizing tsim, normalized, normalized thiab tempered los yog pom zoo Q&T SMLS nkaus xwb | B | |
| Raws li dov, normalizing dov, thermomechanical dov, thermo-mechanical tsim, normalizing tsim, normalized, normalized thiab tempered | X42, X46, X52, X56, X60, X65, X70 | |
| PSL 2 | Raws li dov | BR, X42R |
| Normalizing dov, normalizing tsim, normalized los yog normalized thiab tempered | BN, X42N, X46N, X52N, X56N, X60N | |
| Quenched thiab tempered | BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q | |
| Thermomechanical dov los yog thermomechanical tsim | BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M | |
| Thermomechanical dov | X90M, X100M, X120M | |
| Qhov txaus (R, N, Q lossis M) rau qib PSL2, belongs rau qib steel |
1. Cov txheej txheem tseem ceeb ntawm kub dov seamless steel yeeb nkab (cov txheej txheem kev tshuaj xyuas tseem ceeb):
Kev npaj thiab tshuaj xyuas → raj dawb paug cua sov → tho → raj dov → steel reheating → tsau (txo) txoj kab uas hla → kho cua sov △ → tiav lub raj ncaj → tiav → tshuaj xyuas (tsis muaj kev puas tsuaj, lub cev thiab tshuaj lom neeg, Taiwan tshuaj xyuas) → warehousing
2. Cov txheej txheem tseem ceeb ntawm cov khoom txias-kuav los tiag (kos) seamless steel kav:
Billet npaj → pickling lubrication → txias dov (kos duab) → tshav kub kho → straightening → tiav → tshuaj xyuas
