API 5L umumna nujul kana garis pipe-API 5L pipe garis, pipa garis nyaéta pikeun ngangkut minyak, uap jeung cai sasari tina taneuh kana usaha industri minyak jeung gas ngaliwatan pipe garis.Pipa garis kalebet pipa seamless sareng pipa baja dilas.Tungtungna ngagaduhan tungtung datar, tungtung benang sareng tungtung stop kontak;métode sambungan anu las, sambungan gandeng, sambungan stop kontak, jsb.
| PSL | Kaayaan Pangiriman | Kelas pipa |
| PSL1 | Salaku-digulung, dinormalisasi, normalizing kabentuk | A |
| As-rolled, normalizing rolled, thermomechanical rolled, thermo-méchanical formed, normalizing formed, normalized, normalized and tempered atanapi upami sapuk Q&T SMLS wungkul | B | |
| As-rolled, normalizing rolled, thermomechanical rolled, thermo-méchanical formed, normalizing formed, normalized, normalized and tempered | X42, X46, X52, X56, X60, X65, X70 | |
| PSL 2 | Salaku-digulung | BR, X42R |
| Normalizing digulung, normalizing kabentuk, dinormalisasi atawa dinormalisasi tur tempered | BN, X42N, X46N, X52N, X56N, X60N | |
| Dikurebkeun jeung digeuingkeun | BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q | |
| Thermomechanical digulung atanapi thermomechanical kabentuk | BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M | |
| Thermomechanical digulung | X90M, X100M, X120M | |
| Suffice (R, N, Q atawa M) pikeun sasmita PSL2, milik kelas baja |
1. Prosés produksi utama pipa baja seamless panas-digulung (prosés inspeksi utama):
Persiapan sareng pamariksaan tabung kosong → pemanasan tabung kosong → piercing → rolling tabung → reheating baja → diaméterna tetep (ngurangan) → perlakuan panas △ → straightening tube réngsé → finish → inspeksi (non-destructive, fisik jeung kimia, inspeksi Taiwan) → gudang
2. Prosés produksi utama tiis-digulung (digambar) pipa baja seamless:
Persiapan billet → lubrication pickling → rolling tiis (gambar) → perlakuan panas → straightening → finish → inspeksi
