Cov kev qhia tshwj xeeb no yog ua los ntawm carbon steel thiab siv rau cov kav dej tsis tshua muaj siab. Ua ntej tshaj plaws, API 5L qib B yeeb nkab yog sib npaug rau ASTM A106 Gr.B rau cov kav dej hauv av. Qhov sib txawv tseem ceeb ntawm ob qib yeeb nkab yog cov tshuaj lom neeg thiab kev ua haujlwm ntawm cov khoom siv. Txawm hais tias ob lub kav dej muaj cov tshuaj zoo sib xws, API 5L qib B muaj zog dua. Rau ASTM A53 steel yeeb nkab, koj tuaj yeem xaiv ntawm Hom S (seamless) thiab Qib B (welded). A106 raj yog seamless, thaum A53 raj yog welded. Cov tom kawg yog tus cwj pwm los ntawm qhov kub thiab txias dua li A53 kav dej. Qhov sib txawv tseem ceeb yog nyob rau hauv txoj kev ntawm ob hom yeeb nkab yog tsim. Lub qub yog cov khoom seamless, thaum lub tom kawg yog welded. Nyob ntawm qib, lawv tuaj yeem ua seamless lossis welded. Txawm hais tias ob hom yeeb nkab tuaj yeem ua haujlwm zoo sib xws, cov yeeb nkab seamless muaj qhov zoo dua welded yeeb nkab. Lawv tsis tshua muaj kev ntxhov siab vim lawv tsis muaj seamless. Qhov no txhais tau tias lawv tuaj yeem raug molded rau hauv cov duab meej yam tsis muaj teeb meem. Thaum seamless hlab feem ntau kim dua, welded steel tubes muaj ntau dua nyob rau hauv ntau yam lag luam, tshwj xeeb tshaj yog cov uas yuav tsum tau muaj siab heev. Cia peb pib nrog nws cov tshuaj muaj pes tsawg leeg thiab cov cuab yeej:
| qauv | C, feem pua max. | Mn, feem pua max. | S, feem pua max. | P, feem pua max. | yog min feem pua | Cr, feem pua max. | Cu,% max. |
| A106 Gr. thib ob | 0.30 | 029-1.06 | 0.035 | 0.035 | 0.10 | 0.40 | 0.40 |
| A53 gr. ob | 0.30 | 1.20 | 0.045 | 0.05 | 0.10 | 0.40 | 0.40 |
| API 5L Gr.B PSL1 | 0.28 | 1.20 | 0.030 | 0.030 | / | 0.50 | 0.50 |
Ib co xov xwm ntxiv:
Lawv puas yog cov tuam txhab lossis cov ntaub?
A: Peb yog Hoobkas.
Qhov nkag hauv pem teb yog dab tsi?
A: Feem ntau nws yuav siv sijhawm 5-10 hnub yog tias cov khoom muaj nyob hauv Tshuag. Los yog nws yog 15-20 hnub yog tias cov khoom tsis nyob hauv Tshuag, nws yog raws li candida.
Q: Koj puas muab cov kws qhia poj niam? Puas yog dawb lossis ntxiv?
A: Yog, peb tuaj yeem muab tus tswv dawb tab sis kuv tsis them tus nqi thauj khoom.
Q: Kuv puas tuaj yeem kho qhov khoom raws li kuv qhov kev xav tau?
A: tau kawg. Koj tuaj yeem muab qhov ntev, dav thiab tuab.
Cim npe nrov: smls steel yeeb nkab, tus neeg muag khoom, customized, lag luam wholesale, pheej yig, luv nqi, daim ntawv teev npe, tus nqi qis, hauv Tshuag, dawb qauv
