API 5L bututu shine bututun ƙarfe na carbon da ake amfani da shi don watsa mai da iskar gas, ya haɗa da bututun da aka ƙera a cikin sumul da walda (ERW, SAW). Kayan aiki sun ƙunshi API 5L Grade B, X42, X46, X52, X56, X60, X65, X70, X80 PSL1 & PSL2 a bakin teku, teku da sabis na tsami. API 5L tsarin aiwatar da bututun ƙarfe don tsarin sufuri na bututun bututu da ƙayyadaddun bututun layi.
Maki: API 5L Grade B, X42, X52, X56, X60, X65, X70, X80
Matsayin Ƙayyadaddun Samfura: PSL1, PSL2, kan teku da sabis na tsami na bakin teku
Matsakaicin Diamita na Wuta: 1 /2” zuwa 2”, 3”, 4”, 6”, 8”, 10”, 12”, 16”, 18”, 20”, 24’ zuwa 40’.
Jadawalin Kauri: SCH 10. SCH 20, SCH 40, SCH STD, SCH 80, SCH XS, zuwa SCH 160
Nau'o'in Masana'antu: Mara ƙarfi (Hot Rolled and Cold Rolled), Welded ERW (Lantarki Juriya welded), SAW (Submerged Arc Welded) a cikin LSAW, DSAW, SSAW, HSAW
Nau'in Ƙarshe: Ƙarshen Ƙarshe, Ƙarshen Ƙarshe
Tsawon Tsawon: SRL (Tsawon Tsawon Random Guda), DRL (Tsawon Random Biyu), 20 FT (mita 6), 40FT (mita 12) ko na musamman
Kayayyakin Kariya a cikin filastik ko ƙarfe
Jiyya na Surface: Halitta, Bambanci, Baƙar fata zane, FBE, 3PE (3LPE), 3PP, CWC (Kamfanin Nauyin Nauyi) CRA Clad ko Layi
A cikin API SPEC 5L 46th Edition, an ayyana iyakar kamar haka:”Sharuɗɗan don kera matakin ƙayyadaddun samfur guda biyu (PSL1 da PSL2) na bututun ƙarfe mara sumul da walda don amfani da tsarin sufuri na bututu a cikin masana'antar mai da iskar gas. Wannan ka'ida ba ta aiki ga simintin bututu."
A cikin kalma, API 5L bututu shine bututun ƙarfe na carbon da ake amfani da shi zuwa tsarin watsa mai da iskar gas. A halin yanzu sauran ruwaye kamar tururi, ruwa, slurry suma zasu iya ɗaukar ma'aunin API 5L don dalilai na watsawa.
API 5L karfe layin bututu rungumi dabi'ar karfe daban-daban, gabaɗaya sune Gr. B, X42, X46, X52, X56, X60, X65, X70, X80. Wasu masana'antun suna iya kera darajar karfe har zuwa X100 da X120. Kamar yadda karfe line bututu maki mafi girma, mafi tsananin iko a kan carbon daidai iko, da kuma mafi girma inji ƙarfi wasanni.
Ƙari fiye da haka, don bututun API 5L mai daraja iri ɗaya, abubuwan sinadarai marasa sumul da welded abun ciki ya bambanta, wanda bututun welded ake buƙata sosai da ƙasa akan Carbon da Sulfur.
Ta yanayin isarwa daban-daban, akwai kuma As-birgima, daidaita birgima, na'urar thermomechanical, daidaita tsari, daidaitawa, daidaitawa da fushi, quenched da fushi.
Nau'in Masana'antu Daban-dabanBayanin API 5L ya ƙunshi nau'ikan masana'anta a cikin welded da sumul.
| Class | Daraja | C | Si | Mn | P | S | V | Nb | Ti | |
| max | max | max | max | max | max | max | max | |||
| Farashin 5L ISO 3181 |
PSL1 | L245 ya da B | 0.26 | - | 1.20 | 0.030 | 0.030 | - | - | - |
| L290 ya da X42 | 0.26 | - | 1.30 | 0.030 | 0.030 | - | - | - | ||
| L320 ya da X46 | 0.26 | - | 1.40 | 0.030 | 0.030 | a,b | a,b | b | ||
| L360 ya da X52 | 0.26 | - | 1.40 | 0.030 | 0.030 | b | b | b | ||
| L390 ya da X56 | 0.26 | - | 1.40 | 0.030 | 0.030 | b | b | b | ||
| L415 ya da X60 | 0.26 | - | 1.40 | 0.030 | 0.030 | c | c | c | ||
| L450 ya da X65 | 0.26 | - | 1.45 | 0.030 | 0.030 | c | c | c | ||
| L485 ya da X70 | 0.26 | - | 1.65 | 0.030 | 0.030 | c | c | c |
| Class | Daraja | Ƙarfin Haɓaka MPa |
Ƙarfin Haɓaka MPa |
Y.S/T.S | |||
| min | max | min | max | max | |||
| API 5L ISO3183 |
PSL2 | L245R ya da BR L245N ya da BN L245Q ya da BQ L245M ya da BM |
245 | 450 | 415 | 655 | 0.93 |
| L290R ya da X42R L290N ya da X42N L290Q ya da X42Q L290M ya da X42M |
290 | 495 | 415 | 655 | 0.93 | ||
| L320N ya da X46N L320Q ya da X46Q L320M ya da X46M |
320 | 525 | 435 | 655 | 0.93 | ||
| L360N ya da X52N L360Q ya da X52Q L360M ya da X52M |
360 | 530 | 460 | 760 | 0.93 | ||
| L390N ya da X56N L390Q ya da X56Q L390M ya da X56M |
390 | 545 | 490 | 760 | 0.93 | ||
| L415N ya da X60N L415Q ya da X60Q L415M ya da X60M |
415 | 565 | 520 | 760 | 0.93 | ||
| L450Q ya da X65Q L450M ya da X65M |
450 | 600 | 535 | 760 | 0.93 | ||
| L485Q ya da X70Q L485M ya da X70M |
485 | 635 | 570 | 760 | 0.93 | ||
| L555Q ya da X80Q L555 ya da X80M |
555 | 705 | 625 | 825 | 0.93 | ||
| L625M ya da X90M L625Q ya da X90Q |
625 | 775 | 695 | 915 | 0.95 | ||
| L690M ya da X100M L690Q ya da X100Q |
690 | 840 | 760 | 990 | 0.97 | ||
