Galvanized steel kav siv rau kev siv dej hauv tsev yog sib txuas los ntawm threading, tseem hu ua screwed txuas. Feem ntau, cov kav dej xa dej nrog lub taub nominal tsis tshaj 100 millimeters thiab lub nominal siab tsis tshaj 1 MPa tuaj yeem txais kev sib txuas ntawm cov ntsia hlau.
Cov yeeb nkab xov siv rau kev sib txuas cov kav dej zoo ib yam li cov yeeb nkab fittings, thiab muab faib ua ob hom: conical thiab cylindrical. Feem ntau, cov kav dej uas yog manually threaded feem ntau yog nruab nrog conical yeeb nkab threads.
Lub suab thiab lwm yam kev cai ntawm cylindrical yeeb nkab threads yog tib yam li cov yeeb nkab conical threads.
Cov yeeb nkab threads tuaj yeem tsim los ntawm kev siv cov yeeb nkab threading tshuab lossis los ntawm tshuab dhos tig.
Muaj ntau ntau txoj hauv kev los txuas cov yeeb nkab xov. Piv txwv li, cylindrical internal threads tau muab tso rau hauv cylindrical sab nraud threads; cylindrical internal threads yuav muab tso rau hauv conical sab nraud threads; thiab conical internal threads tuaj yeem muab tso rau hauv conical sab nraud threads. Ob txoj kev tom kawg tuaj yeem ua tiav qhov kev sib txuas nruj dua thiab yog li feem ntau siv.
Thaum txuas cov kav dej nrog cov xov, nws yog ib qho tsim nyog yuav tsum ntxiv cov khoom ntim khoom tsim nyog ntawm cov xov sab nraud ntawm cov yeeb nkab thiab cov xov sab hauv ntawm qhov haum. Cov ntaub ntawv ntim khoom siv feem ntau yog hemp fibers thiab xim hlau lead dawb. Cov txheej txheem tshwj xeeb yog raws li hauv qab no: qhwv ib txheej nyias thiab txawm tias txheej ntawm hemp fibers raws cov kev taw qhia ntawm cov xov ntawm cov yeeb nkab sab nraud (los yog haum), tom qab ntawd siv lub tsho tiv no ntawm cov hlau lead dawb pleev xim rau ntawm hemp fibers, thiab thaum kawg ntsia hlau ntawm qhov txuas. Nws yog ib qho tseem ceeb kom tsis txhob cia cov hemp fibers thiab cov xim hlau lead dawb nkag mus rau hauv cov yeeb nkab, vim qhov no tuaj yeem ua rau txhaws.
Tom qab zawm cov khoom sib txuas, txhawm rau xyuas kom huv thiab zoo nkauj zoo nkauj interface, ntau hemp fibers thiab xim hlau lead dawb yuav tsum tau muab tshem tawm thiab ntxuav kom huv.
Kev siv cov hemp fibers thiab cov xim hlau lead dawb tsis tsuas yog ua haujlwm rau kev sib khi nruab nrab xwb tab sis kuj tseem muab kev tiv thaiv xeb rau cov tshuab ua cov yeeb nkab threads.
