4.8 Signal Baaltak murvat:Uning minimal hajmi 400 mpa, ammo kuchlanish kuchi 0 - . . . . . . . . . . . . . . . . . . . . . . . . . . . .} nisbatan kam emas, masalan, odatdagidek, odatdagidek Mebel ulanishlari va kam mexanik komponent ulanishlari.
8.8 Sinf Back Back:The minimum tensile strength is 800MPa, the ratio of yield strength to tensile strength is 0.8, and the minimum yield strength is 640MPa. It is usually made of medium carbon steel and undergoes quenching and tempering treatment. Its strength and hardness are higher than those of grade 4.8, and it can withstand large yuklar. Uni transport vositalari va traktorlar, shuningdek ba'zi sanoat jihozlarida kuch talab qilinadigan holatlar kabi transport vositalarining kalit qismlarini ulash uchun ishlatilishi mumkin.
10.9 Sight Raund Bolt:O'rtacha keskinlik kuchi 1000 kubometrdan iborat, balandligi 0 . . 900MPA . 900MPA . 900MPA . - bu og'ir texnoparmalar, ko'priklar, po'lat tarkibi binolari kabi yuqori kuch va yaxshi kuchga ega, bu og'ir texnikalar, ko'priklar, po'lat tarkibi tsl ., murvatlar katta tanglik va qirqish kuchlariga bardosh berishlari kerak.
