Welded steel kav, tseem hu ua welded kav, yog tsim los ntawm vuam steel daim hlau los yog strips tom qab lawv curled thiab tsim rau hauv cov hlab. Cov txheej txheem ntawm welded steel kav yog yooj yim, nrog high efficiency, ntau yam specifications, thiab cov khoom siv tsawg. Txawm li cas los xij, lawv lub zog feem ntau qis dua seamless steel kav. Txij li thaum xyoo 1930, nrog kev txhim kho sai ntawm kev ua haujlwm zoo txuas ntxiv ntawm cov hlau strips thiab kev nce qib hauv vuam thiab tshuaj xyuas thev naus laus zis, qhov zoo ntawm vuam seams tau zoo dua qub, ua rau muaj ntau yam thiab specifications ntawm welded steel kav. Cov kav dej no tau maj mam hloov seamless steel kav hauv ntau qhov chaw. Welded steel kav tuaj yeem muab faib ua ncaj seam welded kav thiab kauv welded kav raws li daim ntawv ntawm weld seam.
Ncaj Seam Welded Steel Pipes rau Tsawg-Pressure Liquid Delivery (GB/T 3092-2008), tseem hu ua cov kav dej zoo tib yam lossis cov kav dej dub, yog siv rau kev thauj dej, roj, cua, roj, cua sov, thiab lwm yam. cov kua dej uas tsis tshua muaj siab, nrog rau rau lwm lub hom phiaj. Cov kav dej no tau muab faib ua cov kav dej tsis tu ncua thiab tuab raws li phab ntsa tuab, thiab mus rau hauv cov kav tsis yog xov (dawb) thiab threaded kav raws li daim ntawv kawg. Qhov loj ntawm cov yeeb nkab yog qhia los ntawm nws lub nominal txoj kab uas hla (mm), uas yog ib qho approximation ntawm lub puab txoj kab uas hla. Qhov loj me feem ntau qhia hauv ntiv tes, xws li 11/2. Dhau li ntawm kev siv ncaj qha rau kev thauj mus los, cov kav dej no kuj tau siv dav los ua cov khoom siv raw rau cov kav dej galvanized welded steel rau cov dej xau qis.
Welded Steel Pipes for Low-Pressure Fluid Transportation (GB/T 3091-2015}), tseem hu ua galvanized electric welded steel kav los yog cov kav dej dawb, yog kub-dip galvanized (lub qhov cub-welded lossis hluav taws xob-welded) steel kav siv rau thauj dej, roj, huab cua, roj, cua sov chav, dej kub, thiab lwm yam dej uas tsis tshua muaj siab lossis rau lwm yam. Lawv tau muab faib ua cov kav dej tsis tu ncua thiab thickened galvanized raws li phab ntsa tuab, thiab rau hauv cov kav dej tsis muaj xov thiab threaded galvanized kav raws li daim ntawv kawg. Qhov loj ntawm cov yeeb nkab yog qhia nyob rau hauv nominal txoj kab uas hla (mm), uas approximates lub puab txoj kab uas hla, thiab feem ntau qhia nyob rau hauv nti, xws li 11/2.
Ordinary Carbon Steel Electrical Conduit Pipes (GB 3640-88) yog siv nyob rau hauv hluav taws xob installation tej yaam num ntawm industrial thiab civil vaj tse, machinery, thiab khoom siv los tiv thaiv hluav taws xob nyob ntawm tej.
Ncaj Seam Electric Welded Steel Pipes (GB/T 13793-2016) muaj welds parallel mus rau longitudinal kev taw qhia ntawm cov yeeb nkab. Lawv feem ntau muab faib ua metric fais welded steel kav, hluav taws xob welded nyias-wall kav, transformer txias roj kav, thiab lwm yam.
Spiral Submerged Arc Welded Steel Pipes for Pressure Fluid Transmission (SY 5036-83}) yog tsim los ntawm kub dov steel strips coiled li yeeb nkab billets, tsim rau hauv spirals nyob rau hauv chav tsev kub, thiab welded siv ob-sided submerged arc vuam txoj kev. Cov kav dej no yog siv los thauj cov kua dej uas muaj zog. Lawv muaj peev xwm ua kom muaj zog-kev coj tus kheej, kev ua haujlwm vuam zoo heev, thiab tau ua tiav kev tshuaj xyuas thiab kev sim, ua kom muaj kev nyab xeeb thiab siv tau. Nrog rau txoj kab uas hla loj thiab kev thauj mus los siab, lawv tuaj yeem txuag cov nqi peev hauv cov raj xa dej. Lawv feem ntau yog siv rau cov roj thiab cov kav dej.
High-Frequency Welded Spiral Steel Pipes for Pressure Fluid Transmission (SY 5038-83}) yog tsim los ntawm kub dov steel strips coiled li yeeb nkab billets, tsim rau hauv spirals ntawm chav tsev kub, thiab welded siv lub high-frequency lap welding txoj kev. Cov kav dej no yog siv los thauj cov kua dej uas muaj zog. Lawv muaj lub zog siab-cov kabmob muaj peev xwm, zoo plasticity, thiab yooj yim rau vuam thiab tsim. Lawv tau dhau los ua kev soj ntsuam thiab kev sim tshuaj, kom ntseeg tau tias siv tau zoo thiab txhim khu kev qha. Nrog rau txoj kab uas hla loj thiab kev thauj mus los siab, lawv tuaj yeem txuag cov nqi peev hauv cov raj xa dej. Lawv feem ntau yog siv los tso cov roj thiab cov kav dej.
Kauv Submerged Arc Welded Steel Pipes rau General Low-Pressure Fluid Transportation (SY5037-83) yog tsim los ntawm kub dov steel strips coiled li yeeb nkab billets, tsim rau hauv kauv ntawm chav tsev kub, thiab welded siv ob-sided tsis siv neeg submerged arc welding los yog ib leeg-sab vuam txoj kev. Cov kav dej no yog siv rau kev thauj dej, roj, cua, chav dej, thiab lwm yam dej uas tsis muaj zog.
High-Frequency Welded Spiral Steel Pipes for General Low-Pressure Fluid Transportation (SY 5039-83) yog tsim los ntawm kub dov steel strips coiled li yeeb nkab billets, tsim rau hauv spirals nyob rau hauv chav tsev kub, thiab welded siv lub high-frequency lap txoj kev vuam. Cov kav dej no yog siv los thauj cov kua dej uas tsis tshua muaj siab.
Spiral Welded Steel Pipes for Piles (SY 5040-83) yog tsim los ntawm kub dov steel strips coiled raws li cov yeeb nkab billets, tsim rau hauv spirals nyob rau hauv chav tsev kub, thiab welded siv ob-sided submerged arc vuam los yog high-frequency vuam txoj kev. Cov kav dej no yog siv los ua pawg hauv paus hauv kev tsim vaj tsev engineering, chaw nres nkoj, txuas hniav, thiab lwm yam kev tsim kho.
