Ajoyib muhrlanish. Guruchning yaxshi egiluvchanligi va yuqori bosimi tufayli, qo'chqorning muhrlanish ko'rsatkichlari yaxshiroq, bu vositaning oqishini samarali oldini oladi.
Guruchli dumaloq novda ishlov berish: Avvalo, guruch dumaloq novda kerakli uzunlikka kesilishi va uni qaytarish valfining asosiy shakliga aylantirish uchun torna ustida ishlov berish kerak.
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24 2024-06 
24 2024-06 
24 2024-06 