| Tus Qauv | Sab nraud ntawm phab ntsa thickness deviation | |||
| kev txhais | Kev kam rau sab nraud | Kev kam rau siab ntawm phab ntsa | Qhov hnyav sib txawv | |
| ASTM A53 | Cov yeeb nkab tsis muaj txheej thiab kub-dip galvanized welded thiab seamless nominal steel | Rau cov raj nominal tsawg dua lossis sib npaug rau NPS 1 1/2 (DN40), txoj kab uas hla ntawm txhua qhov chaw yuav tsum tsis pub ntau dua tus nqi txheem ntawm 1/64 hauv (0.4 hli), rau cov raj nominal loj dua lossis sib npaug rau NPS2 (DN50), txoj kab uas hla sab nraud yuav tsum tsis pub ntau dua tus nqi txheem ntawm ± 1% | Qhov tsawg kawg nkaus ntawm phab ntsa tuab hauv txhua qhov chaw yuav tsum tsis pub ntau tshaj 12.5% tuab dua li qhov teev tseg ntawm phab ntsa tuab. Qhov tsawg kawg nkaus ntawm phab ntsa tuab uas tau kuaj xyuas yuav tsum ua tau raws li qhov yuav tsum tau ua hauv Rooj X2.4 | Qhov hnyav ntawm cov yeeb nkab nominal uas tau teev tseg hauv Cov Lus Qhia X2.2 thiab X2.3, lossis qhov hnyav uas tau xam raws li cov qauv tsim nyog hauv ASME B36.10M, yuav tsum tsis txhob hloov pauv ntau dua ± 10% |
| ASTM A106 | Cov yeeb nkab kub siab seamless carbon steel nominal | 1/8-1 1/2 ±0.4 hli, ＞1 1/2-4 ±0.79 hli ＞4-8 ﹢1.59 hli -0.79 hli ＞8-18 ﹢2.38 hli -0.79 hli ＞18-26 ﹢3.18 hli -0.79 hli ＞26-34 ﹢3.79 hli ﹣0.79 hli ＞34-48 +4.76 hli -0.79 hli | Qhov tsawg kawg nkaus phab ntsa tuab hauv txhua qhov chaw yuav tsum tsis pub tshaj 12.5% ntawm qhov teev tseg engineering phab ntsa tuab | Qhov hnyav ntawm cov yeeb nkab hlau yuav tsum tsis pub tshaj 10% lossis ntau dua qhov hnyav uas tau teev tseg, thiab nws yuav tsum tsis pub tsawg dua 3.5% lossis ntau dua. Tshwj tsis yog tias tus neeg muag khoom thiab Xu Fang pom zoo lwm yam, cov yeeb nkab hlau nrog NPS ntawm 4 thiab me dua tuaj yeem raug ntsuas kom raug hauv cov khoom sib dhos. |
| API 5L | Cov yeeb nkab kav dej (kev lag luam roj thiab roj av - cov yeeb nkab hlau rau cov kab ke thauj mus los hauv cov kav dej |  | ||
Lub sijhawm tshaj tawm: Lub Ob Hlis-13-2025
