Heavy Duty Hexagonal Structure Bolt(ASTM A325/A490) is widely used in steel structures,such as multi-floor&high-rise steel structure buildings,industrial buildings,high way,railway,steel steam,tower,power station,airport and other structure workshop frames.
1.Main Size:M16~M36,length:35mm~260mm or according to the request of customers;
2.Material:Carbon steel or alloy steel;
3.Standard: ASTM A325/A490;
4.The Mechanical Grade:10.9S/8.8S;5.Surface Treatment:Zinc-plated(Black or Plain),Hot dip galvanizing,Dacromet,etc.