Nyob rau hauv xyoo tas los no, PPR raj hauv Suav teb tau tsim sai heev, tab sis cov khoom lag luam zoo hauv kev ua lag luam tsis sib xws, thiab muaj qhov tshwm sim ntawm cov ntses zaj sib xyaw hlaws. Txawm hais tias cov kav dej txias lossis cov kav dej kub, cov khoom siv ntawm cov yeeb nkab yuav tsum zoo ib yam, tab sis cov phab ntsa tuab ntawm cov yeeb nkab dej txias thiab cov dej kub sib txawv. Txawm li cas los xij, tam sim no, nws muaj ntau nyob rau hauv kev ua lag luam uas cov khoom siv raw zoo dua yog siv rau cov yeeb nkab fittings thiab cov kav dej kub, thaum ppb (ppb yog thaiv co polypropylene) yog siv rau cov kav dej txias los ua tus PPR. Nyob rau hauv cov ntaub ntawv no, vim cov ntaub ntawv sib txawv, lub vuam sib txuas yog heev yooj yim rau tawg, desoldering, to thiab thiaj li nyob.
When purchasing, consumers should pay attention to the identification on the pipe. The product name should be "random copolymerized polypropylene pipe for cold and hot water" or "PP-R pipe for cold and hot water", and there is an explicit national standard "GB / t18742-2002". Attention shall be paid when products are identified with other names or other standards.
Feem ntau hais lus, cov yeeb nkab dej kub yuav tsum siv cov yeeb nkab nrog cov yeeb nkab series s tsawg dua 2.5, uas yog, phab ntsa thickness ntawm cov yeeb nkab nrog sab kab ntawm 20 yuav tsum yog ntau tshaj 3.4 hli, thiab phab ntsa thickness ntawm cov yeeb nkab nrog sab kab. ntawm 25 yuav tsum ntau tshaj 4.2mm. Tsis tas li ntawd, linear expansion coefficient ntawm PPR yeeb nkab hom nqi yog kwv yees li 10 npaug ntawm cov yeeb nkab tooj liab, yog li nws yuav tsum tau muab sau tseg tias muaj chaw rau kev nthuav dav thiab kev cog lus thaum tsim kho thiab teeb tsa.
Copper tube: Cov khoom siv tshuaj ntawm tooj liab yog qhov ruaj khov thiab tsis yooj yim rau corroded. Lub zog ntawm cov yeeb nkab tooj liab yog ntau dua li ntawm cov yeeb nkab yas, uas tuaj yeem tiv taus siab heev; Piv nrog cov yeeb nkab steel, cov kav dej tooj liab muaj qhov zoo toughness thiab tsis tawg los yog tawg nyob rau hauv muaj zog te heave thiab cuam tshuam. Tooj liab muaj qhov siab melting point thiab tuaj yeem ua haujlwm zoo rau lub sijhawm ntev txawm tias qhov sib kis nruab nrab kub siab li 200 degree. Copper yeeb nkab muaj zoo impermeability. Nyob rau hauv tus txheej txheem ntawm kev siv, nws nto tuaj yeem tsim cov yeeb yaj kiab tiv thaiv nrog cov qauv ntom ntom thiab tsis yaj los ntawm qhov nruab nrab. Tsis muaj teeb meem roj, carbohydrate, kab mob thiab kab mob, cov kua qaub, oxygen lossis ultraviolet lub teeb tuaj yeem dhau los ntawm nws thiab ua rau cov yeeb nkab phab ntsa.
Txoj kev sib txuas ntawm cov kav dej tooj liab feem ntau yog muab faib ua ob pawg: kev sib txuas ntawm cov tshuab thiab kev sib txuas brazing. Kev sib txuas tshuab tau muab faib ua hom ferrule, ntsaws - hom thiab crimping hom.
Kev sib txuas ntawm Ferrule yog ib txoj kev tsim kho yooj yim. Nws yog ib qho yooj yim rau kev khiav lag luam thiab tswv. Nws yog ib qho kev sib txuas hauv kev tsim kho. Thaum lub sij hawm kev twb kev txuas, ntev li ntev raws li lub ntsej muag kawg ntawm cov yeeb nkab ntswj yuav perpendicular mus rau lub yeeb nkab axis, lub burr ntawm lub notch yuav tsum tau ntxuav, txoj hauj lwm ntawm lub snap nplhaib yuav tsum muab tso rau kom raug thaum lub sij hawm cov yeeb nkab haum sib dhos, thiab cov txiv ntseej yuav tsum tau. nruj, kev sib txuas nruj ntawm cov yeeb nkab tooj liab tuaj yeem pom tau.
