EN 598: 2021 ,Tus qauv EN 598 tshiab tshaj plaws, dcov kav hlau uctile, cov khoom siv (lub luj tshib, tees, reducers, thiab lwm yam), cov khoom siv (flange, socket, spigot, thiab lwm yam) thiab lawv cov pob qij txha (Xws li thawb-hauv T-hom / K-hom)cov pob qij txha, cov pob qij txha flange, cov pob qij txha kho tshuab) rau cov kev cai thov dej phwj tuaj thiab cov txheej txheem sim

- ua haujlwm yam tsis muaj siab (dej phwj hauv lub ntiajteb txawj nqus), lossis nrog siab zoo lossis tsis zoo;

- yuav tsum tau ntsia hauv qab lossis saum av;

- xa cov dej saum npoo av, cov khib nyiab hauv tsevdej thiab qee hom dej khib nyiab los ntawm kev lag luam, txawm tias nyob rau hauv cov kab ke sib cais lossis hauv cov kab ke ua ke;

- Npog cov yeeb nkab diameters los ntawmDN 80 txog DN 2600thiab dhau mus.

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