API 5L n'ozuzu na-ezo aka na ọkpọkọ ahịrị-API 5L ọkpọkọ, eriri ahịrị bụ ibufe mmanụ, uzuoku na mmiri nke ewepụtara na ala gaa na ụlọ ọrụ ụlọ ọrụ mmanụ na gas site na ọkpọkọ ahịrị.Ọkpụkpọ ahịrị na-agụnye ọkpọkọ enweghị nkebi na ọkpọkọ ígwè welded.Ngwunye nwere njedebe dị larịị, eriri eriri na oghere oghere;ụzọ njikọ ahụ bụ ịgbado ọkụ, njikọ njikọ, njikọ oghere, wdg.
| PSL | Ọnọdụ nnyefe | Ọkwa ọkpọkọ |
| PSL1 | Dị ka-akpọrela, normalized, normalizing kpụrụ | A |
| Dị ka-akpọrela, normalizing akpọrepu, thermomechanical akpọrepu, thermo-mechanical kpụrụ, normalize kpụrụ, normalized, normalized na iwe ma ọ bụ ọ bụrụ na akwadoro Q&T SMLS naanị. | B | |
| Dị ka-akpọrela, normalizing akpọrepu, thermomechanical akpọrepu, thermo-mechanical kpụrụ, normalize kpụrụ, normalized, normalized na iwe ọkụ. | X42, X46, X52, X56, X60, X65, X70 | |
| PSL 2 | Dị ka-akpọrela | BR, X42R |
| Normalizing akpọrela, na-eme ka ọ dị mma etolite, emebere ya ma ọ bụ mee ka ọ dị mma na iwe ọkụ | BN, X42N, X46N, X52N, X56N, X60N | |
| Emenyụ na iwe | BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q | |
| Thermomechanical akpọrepu ma ọ bụ thermomechanical kpụrụ | BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M | |
| Thermomechanical akpọrela | X90M, X100M, X120M | |
| Nke zuru oke (R, N, Q ma ọ bụ M) maka akara ule PSL2, bụ nke ọkwa nchara. |
1. Usoro mmepụta isi nke ọkpọkọ ígwè na-ekpo ọkụ na-ekpo ọkụ (usoro nyocha isi):
Nkwadebe Tube oghere na nyocha → tube oghere kpo oku → ịkpọpu → tube rolling → iron reheating → edozi (belata) dayameta → ọgwụgwọ okpomọkụ △ → emechara tube ịgbatị → imecha → nyocha (na-adịghị emebi emebi, anụ ahụ na kemịkal, nyocha Taiwan) → nkwakọba ihe
2. Isi mmepụta usoro nke oyi-akpọrepu (dọtara) enweghị nkebi ígwè ọkpọkọ:
Nkwadebe billet → mmanu mmanu → mbịgharị oyi (eserese) → ọgwụgwọ okpomọkụ → ịgbatị → mmecha → nyocha
