Cov lus teb ceev
A 20 Seamless Hlau Yeeb Nkabyog cov yeeb nkab ua los ntawm cov khoom siv hlau billet, raug chob los ntawm lub chaw kom tsim lub raj, nrog aNominal cov yeeb nkab loj (nps) ntawm 20 ntiv tes.
Txawm li cas los xij, tus "20" yog antxhuabQhov loj me, lub ntsiab lus nws yog lub npe rau cov yeeb nkab, tsis yog nws ntsuas lub cev. Nws qhov tseeb sab nraud ntawm lub taub (OD) yog ib txwm20 nti, tab sis nws cov phab ntsa tuab (thiab yog li ntawd nws sab hauv lub taub) tuaj yeem sib txawv nyob ntawm nws"Sij Hawm"Tus naj npawb.
Cov ncauj lus kom ntxaws
1. "Seamless" (SMLS)
Txheej txheem tsim khoom:Cov yeeb nkab yog tsim los ntawm ib qho khoom, cylindrical ntawm cov hlau (ib billet). Lub billet yog rhuab thiab tom qab ntawd chob los ntawm mandrel los tsim lub raj hollow tsis muaj nqaws lossis cov kab weld.
Qhov Zoo:
Lub zog siab dua:Tsis muaj nqaws, yog li nws muaj zog thiab txhim khu kev qha nyob rau hauv kev kub siab.
Cov ris tsho sib luag:Ntau txuas nrog phab ntsa tuab thiab qauv nyob ib ncig ntawm txhua qhov chaw.
Corrosion Kuj:Tsis muaj ntawm kev sib tw weld tshem tawm cov peev xwm pib rau kev xeb.
Kev siv ntau yam:High - qhov kev siv hluav taws xob zoo li cov roj thiab roj, tshuaj siv hluav taws xob, thiab cov ntaub ntawv kho tshuab (piv txwv li (piv txwv li cov ntawv siv kho tshuab (piv txwv li (piv txwv li cov tshuab)
2. "20" (Nominal Yeeb Nkab Loj- nps)
Nps 20yog tus qauv yeeb nkab loj tsim.
Rau Nps 14 nti thiab loj dua, NPS tus lej yog qhov tseeb ntawm lub taub (OD).Yog li ntawd, ib tug 20-nti yeeb nkab muaj ibSab nraud ntawm txoj taub ntawm ib qho me me 20 nti (508.0 hli).
3. Phab ntsa tuab: "Sij Hawm" (Sch)
Qhov no yog qhov tseem ceeb tshaj plaws uas tau sib txawv tshaj plaws rau "20 seamless" yeeb nkab. Lub "Sij Hawm" tus lej (piv txwv li, Sch 40, Sch 80, SCH XXS) txhais cov phab ntsa tuab.
| Cov sijhawm teem sijhawm rau Nps 20 Yeeb Nkab | Teem caij | Phab Ntsa Thickness (Nti) | Phab Ntsa Thickness (Mm) | Kwv yees li. Nyhav (LB / FT) | Ib Daim Ntawv Thov |
|---|---|---|---|---|---|
| Sch 10 | 0.250 | 6.35 | 104.13 | Tsawg - h siab, lub teeb ci ntsa iab | |
| Sch 20 | 0.312 | 7.92 | 128.99 | - | |
| Sch Std (Txuj Ci) | 0.375 | 9.53 | 153.77 | Lub Hom Phiaj Dav Hlau, Thib Tes Siab | |
| Sch 40 | 0.500 | 12.70 | 201.64 | Lub hom phiaj dav dav, siab dua | |
| Sch 60 | 0.625 | 15.88 | 248.35 | - | |
| Sch 80 (Xs) | 0.750 | 19.05 | 293.90 | High - qhov kev pab cuam siab | |
| Sch 100 | 0.875 | 22.23 | 338.30 | - | |
| SCH 120 | 1.000 | 25.40 | 381.53 | - | |
| Sch 140 | 1.125 | 28.58 | 423.61 | - | |
| SCH 160 (XXS) | 1.250 | 31.75 | 464.53 | Kev kub siab heev, kev ua haujlwm loj heev |
Nco tseg:"Xs" sawv ntsug rau kev ntxiv thiab zoo ib yam rau Sch 80. "XXS" sawv ntsug rau ob leeg muaj zog thiab zoo nkauj rau SCH 160.
Yuav ua li cas qhia kom meej rau 20 Seamless Steel Yeeb Nkab
Txhawm rau kom raug lossis qhia cov yeeb nkab no, koj xav tau ntau dua li "20 seamless." Kev qhia tshwj xeeb suav nrog:
Nominal yeeb nkab loj (nps): 20
Hom:Tsis ntse
Pib:(piv txwv li, Sch 40, Sch 80)
Khoom siv / ASTM Txuj:(piv txwv li, A106 qib B rau high- cov kev pab kub, A53 qib kub B rau kev siv dav dav, A333 rau Tsawg} Kev pabcuam kub).
Ntev:(piv txwv li, random ntev, 20 ft, 40 ft)
Piv txwv ntawm tag nrho cov lus qhia tshwj xeeb:
20 "Nps Seamless Yeeb Nkab, SCH 40, ASTM A106 qib B, 20 'ntev
Cov Qauv Tseem Ceeb thiab Cov Khoom Siv
Seamless kav yog tsim kom muaj ntau yam ASTM cov qauv nyob ntawm lawv cov kev xav siv:
ASTM A106:Txheem rau seamless cov hlau yeeb nkab cov yeeb nkab rau high- kub kev pab.
ASTM A53:Txheem rau seamless thiab welded steel yeeb nkab rau kev siv dav dav.
ASTM A333:Txheem rau seamless thiab welded steel yeeb nkab rau tsawg - kub kev pab.
ASTM A335:Txheem rau seamless ferritic alloy - steel yeeb nkab rau high- kev pab kub.
Lub ntsiab
"20 Seamless Steel Yeeb Nkab"yog cov yeeb nkab nrog a20-nti sab nraud lub taubthiabTsis muaj Welded Seam.
Nws lub siab - Tuav lub peev xwm thiab qhov hnyav yog txiav txim siab los ntawm nwsPhab Ntsa Thickness (Teem Sij Hawm).
Yeej ib txwm hais covTeem sijhawm tus lejthiabCov Qauv Qauvkom tau txais cov yeeb yam koj xav tau rau koj daim ntawv thov.
