30 yong’inga chidamli eshik, 38 mm yong’inga qarshi eshiklar, podval yong’inga qarshi eshik

Po’latdan yasalgan yong’in eshiklarining sirtini qayta ishlash jarayoni yanada xilma-xildir. Bundan tashqari, yong’inga qarshi po’lat eshiklar turli xil yong’inga chidamli materiallar bilan to’ldirilishi mumkin, ular yaxshi yong’in va tutunning oldini olish qobiliyatiga ega, shuningdek, ovoz yalıtımı, maktablar, shifoxonalar va shovqinga juda sezgir bo’lgan boshqa joylar uchun ko’proq mos keladi.

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