Welded yeeb nkab, tseem hu ua welded steel yeeb nkab, yog tsim los ntawm steel phaj los yog sawb welded tom qab decoiling thiab sib sau.Welded steel yeeb nkab muaj qhov zoo ntawm cov txheej txheem tsim khoom yooj yim, kev ua haujlwm siab ntau lawm, ntau yam thiab cov lus qhia tshwj xeeb, thiab cov cuab yeej siv tsawg dua, tab sis nws lub zog dav dav yog qis dua li seamless steel yeeb nkab.Txij li thaum xyoo 1930, nrog rau kev txhim kho sai ntawm cov khoom siv zoo tshaj plaws thiab kev txhim kho ntawm vuam tshuab thiab tshuaj xyuas tshuab, qhov zoo ntawm welded seam tau raug txhim kho tsis tu ncua, ntau yam thiab specification ntawm welded steel yeeb nkab tau nce, thiab seamless steel. yeeb nkab tau raug hloov nyob rau hauv ntau thiab ntau lub teb.Welded steel kav yog muab faib ua ncaj seam welded yeeb nkab thiab kauv welded yeeb nkab raws li daim ntawv ntawm weld.

Ib.Classification ntawm Welded Pipes Welded tubes

Cov kav dej welded tau muab cais raws li lawv cov kev siv: lawv kuj tau muab faib ua cov kav dej dav dav, galvanizing welded kav, oxygen tshuab welded kav, hlau tes tsho, metric welded kav, idler kav, qhov tob tob kav dej, tsheb kav, transformer kav, welded nyias. -walled kav, welded txawv txav kav thiab kauv welded kav.

二.Daim Ntawv Thov Ntau Yam ntawm Welded Pipe

Welded yeeb nkab khoom yog dav siv nyob rau hauv boiler, tsheb, nkoj lub tsev, lub teeb yuag structural qhov rooj thiab qhov rais steel, rooj tog, ntau yam kev ua liaj ua teb machinery, scaffolding, hlau threading yeeb nkab, high-rise rhawv, ntim thiab thiaj li nyob. tuaj yeem ua tau raws li cov neeg siv khoom xav tau, tshwj xeeb txawv txav welded yeeb nkab tuaj yeem tsim raws li cov neeg siv khoom xav tau.

ḉ.THEORETICAL calculation METHOD WELDED PIPE WEIGHT  

Muaj cov qauv rau kev xam qhov hnyav ntawm welded yeeb nkab.

Theoretical hnyav ib 'meter' ntawm cov yeeb nkab steel (qhov ceev ntawm cov hlau yog 7.85 kg / dm3)

Cov roj formula: W = 0.02466 (DS)S

Hauv kev suav cov mis, qhov theoretical hnyav ntawm W-steel yeeb nkab ib 'meter', kg / m;

D - Nominal txheej kab ntawm steel yeeb nkab, mm;

S - nominal phab ntsa thickness ntawm steel yeeb nkab, mm.

四.Kev txhais lus thiab kev lag luam siv cov yeeb nkab welded

Cov khoom siv raw siv rau ntawm welded raj zeb yog steel phaj lossis steel sawb.Nws tuaj yeem muab faib ua rau hauv qhov cub welded yeeb nkab, hluav taws xob welded yeeb nkab thiab tsis siv neeg arc welded yeeb nkab vim muaj kev sib txawv vuam tshuab.Raws li cov ntaub ntawv sib txawv, nws tuaj yeem muab faib ua ncaj seam welded yeeb nkab thiab kauv welded yeeb nkab.per qhov kawg zoo, nws tuaj yeem muab faib ua puag ncig welded yeeb nkab thiab tshwj xeeb zoo li welded yeeb nkab (square yeeb nkab ca yeeb nkab thiab lwm yam).Cov kav dej welded tuaj yeem muab faib ua pawg hauv qab no rau lawv cov khoom sib txawv thiab siv:

1. GB / T3091-1993 (Galvanized Welded Hlau Yeeb Nkab rau Cov Dej Tsis Txaus Siab Conveyance)

Feem ntau yog siv rau kev xa dej, roj, cua, roj, cua kub dej los yog chav dej thiab lwm yam dej tsis tshua muaj siab thiab lwm yam kav dej.Nws cov khoom sawv cev yog qib Q235A steel.

2. GB / T3092-1993 (Galvanized Welded Steel Yeeb Nkab rau Kev Siv Dej Siab Tsawg)

Feem ntau yog siv rau kev xa dej, roj, cua, roj, cua kub dej los yog chav dej thiab lwm yam dej tsis tshua muaj siab thiab lwm yam kav dej.Nws cov khoom sawv cev yog Q235A qib steel.

3. GB/T 14291-1992 (Welded Pipe rau Mine Fluid Transport)

Feem ntau yog siv rau mine cua siab, kua dej, ncej roj ntws nrog ncaj seam welded steel yeeb nkab.Nws cov khoom sawv cev yog qib Q235A thiab B steel.GB / T 14980-1994 (Qhov Loj Diameter Welded Hlau Yeeb Nkab rau Cov Khoom Siv Hluav Taws Xob Tsawg).Nws yog tsuas yog siv rau kev xa cov kua dej qis xws li dej, dej phwj tuaj, roj, cua, cua sov chav thiab lwm yam.Nws cov khoom sawv cev yog qib Q235A steel.

4. GB / T12770-1991 (Welded stainless hlau yeeb nkab rau txhua yam qauv)

Feem ntau yog siv rau cov tshuab, tsheb, tsheb kauj vab, rooj tog zaum, Tsev so thiab tsev so kho kom zoo nkauj thiab lwm yam khoom siv thiab cov khoom siv.Nws cov ntaub ntawv sawv cev yog 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, thiab lwm yam.

GB / T12771-1991 (Welded Stainless Hlau Yeeb Nkab rau Kev thauj mus los)

Feem ntau yog siv rau kev xa cov xov xwm uas tsis tshua muaj siab corrosive.

Cov ntaub ntawv sawv cev yog 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, thiab lwm yam.