هتي 4 عام استعمال ٿيل مسدس بولٽس آهن: 1. GB/T 5780-2016 "Hexagon Head Bolts Class C" 2. GB/T 5781-2016 "Hexagon head Bolts with full thread C گريڊ" 3. GB/T 5782-2016" Hexagon Head Bolts" 4. GB/T 5783-2016 "Hexagon head bolts with full thread" ...
وڌيڪ پڙهو