ʻO ka API 5L ka mea maʻamau e pili ana i ka paipu laina-API 5L laina paipu, ʻo ka paipu laina e lawe i ka aila, ka mahu a me ka wai i unuhi ʻia mai ka lepo a i nā ʻoihana ʻoihana aila a me ke kinoea ma o ka paipu laina.Aia ka paipu laina i ka paipu seamless a me ka paipu kila welded.He mau welau palahalaha ko na welau, na welau wili a me na welau kumu;ʻO nā ʻano hoʻohui he welding, hoʻopili pili, pili socket, etc.
| PSL | Kūlana Hoʻouna | Papa paipu |
| PSL1 | As-rolled, normalized, normalizing formed | A |
| E like me ka ʻōwili ʻia, ʻōwili maʻamau, ʻōwili ʻia ka thermomechanical, hoʻokumu ʻia ka thermo-mechanical, hana maʻamau, hana maʻamau, maʻamau a ʻoluʻolu a i ʻole Q&T SMLS wale nō. | B | |
| E like me-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered | X42, X46, X52, X56, X60, X65, X70 | |
| PSL 2 | As-rolled | BR, X42R |
| Normalizing rolled, normalizing formed, normalized or normalized and tempered | BN, X42N, X46N, X52N, X56N, X60N | |
| Hoʻopiʻi a huhū | BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q | |
| Hoʻokumu ʻia ka thermomechanical a i ʻole ka thermomechanical | BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M | |
| Thermomechanical ʻōwili ʻia | X90M, X100M, X120M | |
| ʻO ka lawa (R, N, Q a i ʻole M) no nā māka PSL2, no ka papa kila |
1. ʻO ke kaʻina hana nui o ka paipu kila hoʻoheheʻe wela (ka hana nānā nui):
ʻO ka hoʻomākaukau ʻana a me ka nānā ʻana o ka tube blank → hoʻoheheʻe ʻia → ka ʻōwili ʻia → ka hoʻomaʻamaʻa ʻana i ke kila → hoʻopaʻa ʻia (hōʻemi ʻia) ke anawaena → ka mālama wela △→ hoʻopau ʻana i ka paipu hoʻopau → hoʻopau → nānā (non-destructive, physical and chemical, Taiwan inspection) → warehousing
2. ʻO ke kaʻina hana nui o nā paipu kila liʻiliʻi i ʻōwili ʻia (kau ʻia).
ʻO ka hoʻomākaukau ʻana i ka bila → pickling lubrication → ka ʻōwili anuanu (ke kaha kiʻi) → ka mālama wela → hoʻoponopono → hoʻopau → nānā.
