High Strength M10 ASTM A325M grade 8.8 zinc plated heavy hexagon bolt ASTM A325 structural bolts are heavy hex bolts made of medium carbon steel with ... 자세히보기
High Strength Heavy Structural ASTM A490 Type 1 heavy hex bolt A490 covered two types of quenched and tempered, alloy steel heavy hex structural bolts ... 자세히보기