- 09
- Mar
2 soatlik devordagi eshik yong’in darajasi, yong’inga chidamli kirish lyuklari, shiftlar uchun yong’inga chidamli kirish eshiklari
Ular nafaqat zaharli gazlarni o’zlari chiqarmaydilar, balki zaharli gazlarning kirib kelishini ham yaxshi to’sib qo’yishlari mumkin. Yong’inga qarshi eshiklarning ko’p turlari mavjud, masalan, yog’och yong’inga qarshi eshiklar, temir yong’inga qarshi eshiklar, temir yog’och yong’inga qarshi eshiklar va boshqalar.
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