DIN 30670 yog hais txog polyethylene txheej ntawm cov kav hlau thiab fittings-Kev xav tau thiab kev sim.

Cov txheej txheem no qhia txog qhov yuav tsum tau ua rau lub Hoobkas siv peb-txheej extruded polyethylene-raws li txheej, thiab ib- lossis ntau txheej txheej sintered polyethylene-raws li txheej rau kev tiv thaiv corrosion ntawm steel kav thiab fittings.Cov coatings yog tsim rau kev tiv thaiv ntawm faus los yog submerged steel kav ntawm tsim kub ntawm-40 °C mus txog +80°C. Cov qauv tam sim no qhia txog cov kev cai rau cov txheej txheem uas siv rauLSAW steel yeeb nkab or seamless steel kav thiabfittings siv rau kev tsim cov kav dej rau kev xa cov kua lossis cov pa roj.Kev siv tus qauv no ua kom ntseeg tau tias PE txheej muab kev tiv thaiv txaus tiv thaiv cov khoom siv hluav taws xob, thermal thiab tshuaj lom neeg thaum lub sijhawm ua haujlwm, thauj, khaws cia thiab teeb tsa.TS EN ISO 21809-1 Cov txheej txheem thoob ntiaj teb rau peb txheej extruded polyethylene- thiab polypropylene-raws li txheej rau cov kav hlau rau cov roj av thiab cov kav xa hluav taws xob tsheb thauj mus los.Daim ntawv thov hauv qab no tsis suav nrog DIN EN ISO 21809-1:─ ibtag nrho polyethylene-raws li txheej rau steel kav thiab fittings siv rau conveyance thiab faib dej thiab dej khib nyiab,─ ibtag nrho polyethylene-raws li txheej rau steel kav thiab fittings nyob rau hauv tis pipelines rau gaseous thiab kua media,─ ibib leeg- thiab ntau txheej sintered polyethylene-raws li txheej rau steel kav thiab fittings siv rau thauj pipelines thiab tis pipelines Cov qauv tam sim no tseem siv tau rau saum toj no daim ntawv thov.Ob-txheej polyethylene-raws li txheej txheej yog tus qauv ntawm European theem hauv DIN EN 10288 uas tau luam tawm thaum Lub Kaum Ob Hlis 2003.

Cov ntaub ntawv yuav tsum raug xaiv los ntawm kev txiav txim siab ntawm coater vim hais tias, nyob ntawm qhov kev teeb tsa thiab txheej txheej txheej txheej, ntau cov ntaub ntawv tuaj yeem siv los ua raws li qhov tsawg kawg nkaus uas tau teev tseg hauv cov qauv no rau cov txheej txheem tiav.Txhua qhov kev xav tau ntawm tus neeg yuav khoom hais txog cov khoom siv yuav tsum tau ua raws li kev pom zoo.Qhov saum npoo yuav tsum tau npaj los ntawm kev tshem tawm xeb los ntawm kev siv tshuaj tua kab mob.Kev ntxuav tawg thiab lwm yam haujlwm tsim nyog yuav tsum tsis txhob ua rau txo qis ntawm cov phab ntsa tsawg kawg nkaus uas tau teev tseg hauv cov qauv kev xa khoom rau cov yeeb nkab steel.Residual abrasive plua plav yuav tsum tau muab tshem tawm ua ntej txheej txheej.