201 202 310S 304 316 Zoo nkauj welded polished threaded stainless hlau yeeb nkab chaw tsim tshuaj paus
Classification ntawm threaded kav:
NPT, PT, thiab G yog tag nrho cov yeeb nkab xov.NPT yog 60 ° taper yeeb nkab xov uas belongs rau American tus qauv thiab siv nyob rau hauv North America.Cov qauv hauv tebchaws tuaj yeem pom hauv GB / T12716-2002m.
PT yog 55 ° kaw tapered yeeb nkab xov, uas yog ib hom Wyeth xov thiab feem ntau yog siv nyob rau hauv cov teb chaws Europe.Qhov ntsuas yog 1:16.Cov qauv hauv tebchaws tuaj yeem pom hauv GB / T7306-2000.(Feem ntau yog siv nyob rau hauv qhov kub thiab txias, siab siab tshuab thiab lubrication tshuab)
G yog 55 ° tsis-xov sealing yeeb nkab xov, uas yog ib hom Wyeth xov.Cim raws li G stands rau cylindrical xov.Cov qauv hauv tebchaws tuaj yeem pom nyob rau hauv GB / T7307-2001 (feem ntau yog siv rau cov kav dej thiab roj av nrog lub siab qis dua 1.57MPa).G yog lub npe dav dav ntawm cov yeeb nkab xov, feem ntau hu ua yeeb nkab voj voog.Ntawd yog, cov xov yog ua tiav los ntawm cylindrical nto.ZG feem ntau hu ua yeeb nkab lub khob hliav qab, uas yog, cov xov yog ua tiav los ntawm conical nto, thiab lub teb chaws tus qauv yog cim raws li Rc (cone puab yeeb nkab xov).G xov thiab Rp xov yog 55 ° cylindrical yeeb nkab threads.Rp yog lub npe ntawm ISO.
GB ib feem ntawm Tuam Tshoj tus qauv yog sib npaug rau cov txheej txheem thoob ntiaj teb ISO.Cov ntsiab lus yog raws li nram no:
1. Qhov haum ntawm cylindrical internal thread (Rp) thiab tapered sab nraud xov (R1), hu ua "kem / cone haum", kuv lub teb chaws tus qauv tooj GB / T7306.1-2000, uas sib npaug txais cov txheej txheem thoob ntiaj teb ISO7-1 : "kem / cone haum" xyoo 1994 "cov yeeb nkab kaw nrog xov";
2. Qhov haum ntawm tapered internal thread (Rc) thiab tapered sab nraud xov (R2), hu ua "cone / cone haum", peb lub teb chaws tus qauv tooj yog GB / T7306.2-2000, uas sib npaug adopts thoob ntiaj teb tus qauv ISO7- 1: Lub "cone / cone haum" nyob rau hauv 1999 "pipe xov kaw nrog xov";
3. Qhov haum ntawm cylindrical internal thread (G) thiab cylindrical sab nraud xov (G) yog hu ua "kem / kem haum".Tus qauv naj npawb ntawm peb lub teb chaws yog GB / T7307-2001 "55 ° tsis-sealed yeeb nkab xov".Cov txheej txheem no sib npaug Thawj feem ntawm tus txheej txheem thoob ntiaj teb ISO228-1: 1994 "Non-thread-sealed pipe threads" yog "Dimensional tolerances and markings", tab sis kuv lub teb chaws tus qauv tsis pom zoo kom siv cov yeeb nkab kaw threads thiab unsealed yeeb nkab threads. , uas yog (Rp / G);
1. Cov dej txias thiab cov kav dej tau txais kev sib txuas threaded thaum cov yeeb nkab txoj kab uas hla tsawg dua lossis sib npaug li 50mm.
2. Tube threading tshuab yog siv rau xov ua thiab tshwj xeeb threading tshuab roj yog siv rau lubrication.Dej lossis lwm cov kua dej tsis raug tso cai los hloov cov roj nplua nyeem.
3. Cov roj txhuas thiab cov hlau hemp yog siv rau kev sib khi thiab ntim khoom, thiab Teflon daim kab xev yog siv rau kev sib txuas nrog cov khoom siv.Nws tsis raug tso cai nqa cov ntim rau hauv cov yeeb nkab thaum zawm cov xov.
4. Kev txiav cov yeeb nkab yuav tsum tau ua nrog lub cutter lossis hacksaw.Oxygen acetylene lossis tshuab txiav tsis raug tso cai.Lub inclination sib txawv ntawm lub ntsej muag kawg ntawm kev txiav yuav tsum tsis txhob ntau tshaj 1% ntawm sab nraud txoj kab uas hla ntawm cov yeeb nkab, thiab nws yuav tsum tsis txhob ntau tshaj 3 hli.
5. Yuav kom ntseeg tau tias qhov tsawg kawg nkaus phab ntsa thickness ntawm cov xov hauv paus, nws yuav tsum tau nyob rau hauv lub puab lub voj voog ntawm qhov kawg ntawm cov yeeb nkab seem, thiab axial xov sib txawv thiab axial qaij ntawm cov yeeb nkab xov yuav tsum nruj me ntsis tswj, vim hais tias Txawm hais tias nws yog axial parallel sib txawv los yog axial qaij sib txawv, Ob leeg yuav txo qhov tuab ntawm cov yeeb nkab phab ntsa, yog li txo lub zog ntawm cov yeeb nkab.
Tso cai sib txawv ntawm cov yeeb nkab xov ua
Nominal txoj kab uas hla (mm) Parallel deviation (mm) Tilt deviation (mm)
1 ≤32 0.3 0.3/100
2 40-65 0.4 0.4/100
3 80-100 0.5 0.5/100
4 125-150 0.6 0.5/100
6. Tom qab cov yeeb nkab threaded tiav lawm, xyuas nws nrog cov xov ntsuas ntsuas.Yog tias muaj cov yeeb nkab fittings ntawm tib qhov kev qhia tshwj xeeb, nws yog qhov zoo dua kom phim cov yeeb nkab fittings.Lub degree ntawm looseness tsuas yog yuav tsum tau screwed los ntawm txhais tes, thiab nws yuav tsum tsis txhob xoob heev yog hais tias cov yeeb nkab fittings yog screwed rau hauv. Yog hais tias koj tau daig, koj yuav khob ib ncig ntawm cov yeeb nkab nrog ib tug ntoo claw.Yog tias nws tseem tsis tuaj yeem ntsia tau rau hauv lossis cov ntsia hlau ua nruj dua, nws tsuas yog rub tawm.Forcible screwing tsis tso cai.
7. Cov xov xov yuav tsum huv thiab tsis tu ncua.Cov xov tawg lossis ploj yuav tsum tsis pub tshaj 10% ntawm tag nrho cov xov.Cov txheej txheej galvanized nyob rau sab nrauv ntawm cov kav dej yuav tsum tau tiv thaiv.Cov khoom puas hauv zos yuav tsum tau kho nrog kev kho los tiv thaiv corrosion.
8. Threaded kev twb kev txuas Lub hauv paus ntawm cov yeeb nkab xov tom qab kev teeb tsa ntawm cov yeeb nkab yuav tsum muaj 2 ~ 3 cov xov xov, thiab cov hlau hemp ntau dhau yuav tsum tau muab ntxuav thiab kho nrog kev tiv thaiv corrosion.
Cov khoom muaj feem xyuam
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