Titanium raj tau siv hauv kev lag luam hauv pej xeem rau 25 xyoo. Corrosion-resistant titanium tubing yog dav siv nyob rau hauv tshuaj, petrochemical, ntsev manufacturing, non-ferrous metallurgy thiab lwm yam lag luam. Welded fittings yog siv rau khoov thiab hla. Cov yeeb nkab yog qhov nyuaj rau kev tsim kho thiab muaj lub neej expectancy tsawg, uas yog qhov tsis muaj zog uas cuam tshuam rau tag nrho lub neej ntawm cov yeeb nkab. Tom qab tsib xyoos ntawm kev siv zog, pipeline weld leakage tau dhau los ua kev siv tshuab dav hlau. Lub koom haum Northwest of Nonferrous Metals tau ua tiav kev sim tsim cov titanium fittings xws li seamless titanium luj tshib, reducers, tees, thiab nyob flange fittings los ntawm kev siv ib tug tshwj xeeb extrusion txoj kev, uas nyob rau hauv lub qhov khoob thiab nqa cov kev tsim kho thiab installation ntawm titanium pipelines mus rau tus qauv. , thiab kev pabcuam lub neej ntawm cov kav dej tau ntau dua ob npaug.
Thoob plaws ntiaj teb, kev yug me nyuam ntawm cov kav hlau muaj keeb kwm ntawm ntau tshaj 200 xyoo, tab sis cov serialization ntawm cov kav hlau tau pib thaum xyoo 1920. Feem ntau siv lub puab kab uas hla ntawm lub nti integer raws li lub nominal txoj kab uas hla DN, ua ib tug series. Tebchaws Askiv, Tebchaws Meskas thiab Nyij Pooj, cov kev cai ntawm txoj kab uas hla sab nraud yog qhov pib zoo ib yam, uas yog, hu ua kab loj loj. Lub teb chaws Yelemees, Ltalis thiab Russia siv txoj kab uas hla me me los ua ib lub qhov ncauj me me. Nws tsis yog txog 70 xyoo dhau los uas cov qauv raws li United Kingdom thiab United States o01340336.0560, thiab lwm yam tau tsim. Qhov ntev yog millimeter. Nyob rau xyoo 1980s ntawm lub xyoo pua nees nkaum, lub teb chaws tau tshaj tawm cov qauv kev sib txuas lus, thiab paub txog kev sib koom ua ke ntawm tus qauv 060.
Cov khoom siv roj hauv tsev tsim qauv pib thaum xyoo 1980, thaum xub thawj tus qauv tau tsim los ntawm Ministry of Petroleum thiab Chemical Industry hauv Luoyang 117-84 (seamless khoov series). Raws li lub hauv paus no, Ministry of Chemical Industry tshaj tawm hgj514 (carbon steel thiab low alloy steel nrog seamless welded yeeb nkab), Lub Ib Hlis 1949 Sinopec tshaj tawm shj408 (steel seamless welded yeeb nkab), ua rau lub teb chaws tus qauv GB 12459-90 (steel seamless welded tube). Lub teb chaws tus qauv yog ze rau tus qauv, nws yog pom zoo kom hais tias lub loj txoj kab uas hla series rau lub A series, lub domestic siv ntev ntawm imitation Soviet series rau B series.
Titanium alloy yeeb nkab fittings qauv pib tsim los ntawm Northwest Institute of Nonferrous Hlau. QBridge01-93 (titanium thiab titanium alloy yeeb nkab luj tshib) thiab tus qauv tshiab QQiao07-94 (titanium alloy welded seamless yeeb nkab fittings) yog nplua nuj nyob rau hauv cov ntsiab lus (xws li luj tshib, tees, reducer fittings, xoob flange fittings, thiab lwm yam .). Cov lus qhia tshwj xeeb yog ua raws li lub teb chaws tus qauv GB12459. cov ntaub ntawv thiab lwm yam khoom raws li titanium hais txog lub teb chaws tus qauv.
Lub serialization ntawm cov yeeb nkab fittings yog nyob ntawm nominal txoj kab uas hla thiab muab faib ua 19 qib los ntawm nti los yog millimeters. Nominal diameters yog integer series zoo ib yam li, tab sis tsis sib npaug rau, internal diameters. Tag nrho sab nraud qhov ntev tshwj tsis yog phab ntsa thickness tuaj yeem ua raws li nominal txoj kab uas hla thiab cov yeeb nkab hom. Sab nraud txoj kab uas hla ntawm lub raj yog qhov tseem ceeb tshaj qhov ntsuas qhov ntsuas qhov ntsuas, thiab cov lus saum toj no kuj teev cov kab lus sab nraud rau A thiab B series. Thaum tsim thiab tsim cov cuab yeej tshiab, qhov tseem ceeb yuav tsum tau muab rau A series kom ua tiav qhov sib xws. Txawm li cas los xij, coj mus rau hauv tus account B series tau siv nyob rau hauv peb lub teb chaws rau ntau xyoo lawm, cov cuab yeej siv qub thiab cov txheej txheem qub tsis tuaj yeem ua tiav hauv lub sijhawm luv luv. Yog li ntawd, nws xav tias kev sib koom ua ke ntawm B series yuav ntev heev.
