| Txuj | Outer diameter phab ntsa thickness sib txawv | |||
| txhais | Sab nraud txoj kab uas hla kam rau ua | Phab ntsa thickness kam rau ua | Qhov hnyav sib txawv | |
| ASTM A53 | Uncoated thiab kub-dip galvanized welded thiab seamless nominal steel yeeb nkab | Rau cov raj nominal tsawg dua los yog sib npaug rau NPS 1 1/2 (DN40), txoj kab uas hla ntawm txhua qhov chaw yuav tsum tsis txhob siab tshaj tus qauv tus nqi ntawm 1/64 hauv (0.4mm), rau cov raj nominal ntau dua lossis sib npaug rau NPS2 (DN50), txoj kab uas hla sab nraud yuav tsum tsis pub tshaj tus qauv tus nqi ntawm ± 1%. | Qhov tsawg kawg nkaus phab ntsa thickness nyob rau hauv txhua qhov chaw yuav tsum tsis txhob ntau tshaj 12.5% thicker tshaj qhov teev nominal phab ntsa thickness. Qhov kuaj xyuas qhov tsawg kawg nkaus phab ntsa tuab yuav tsum ua tau raws li qhov yuav tsum tau ua hauv Table X2.4 | Qhov hnyav ntawm cov yeeb nkab nominal tau teev tseg hauv Cov Lus X2.2 thiab X2.3, lossis qhov hnyav suav raws li cov qauv tsim nyog hauv ASME B36.10M, yuav tsum tsis txhob sib txawv ntau dua ± 10% |
| ASTM A106 1 | Kub kub seamless carbon steel nominal yeeb nkab | 1/8-1 1/2 ± 0.4mm, ＞1 1/2-4 ± 0.79mm ＞4-8 ﹢1.59mm -0.79mm ＞8-18 ﹢2.38mm -0.79mm ＞18-26﹢03.18mm 3.79mm ﹣0.79mm ＞ 34-48 +4.76mm -0.79mm | Qhov tsawg kawg nkaus phab ntsa thickness nyob rau hauv txhua qhov chaw yuav tsum tsis txhob ntau tshaj 12.5% ntawm cov txheej txheem engineering phab ntsa thickness | Qhov hnyav ntawm cov yeeb nkab steel yuav tsum tsis pub tshaj 10% lossis ntau tshaj qhov hnyav tshaj li qhov teev tseg, thiab yuav tsum tsis pub tsawg dua 3.5% lossis ntau dua. Tshwj tsis yog tias pom zoo los ntawm tus neeg muag khoom thiab Xu Fang, cov kav hlau steel nrog NPS ntawm 4 thiab me dua tuaj yeem ua kom hnyav hauv cov khoom siv. |
| API 5L | Pipeline yeeb nkab (kev lag luam roj thiab roj - steel yeeb nkab rau kev thauj mus los hauv cov kav dej |  | ||
Post lub sij hawm: Feb-13-2025
