Grade 10.9S structural steel bolts
- National standard code：GB1228/GB3632
- Product material：20MnTiB/40Cr/35VB
- Surface treatment：Blackened/Phosphated
- Product diameter：M16、M20、M22、M24、M27、M30
- Product length (mm)：
Diameter M16、Length 50 55 60 65 70 75 80 85 90 95 100 ....
Diameter M20、Length 50 55 60 65 70 75 80 85 90 95 100 ....
Diameter M22、Length 50 55 60 65 70 75 80 85 90 95 100 ....
Diameter M24、Length 55 60 65 70 75 80 85 90 95 100 ....
Diameter M27、Length 65 70 75 80 85 90 95 100 110 120 130 140 150 ....
Diameter M30、Length 80 85 90 95 100 110 120 130 140 150 160 170 180 ....
Product Detail
Product composition: Each complete connection set consists of one large hexagon bolt, one thickened nut, and two high-strength flat washers, fully complying with national standard assembly requirements.
Applicable scenarios: Specifically designed for friction-type steel structure joint connections, including high-rise steel structure factories, bridge trusses, gymnasium space frames, power plant equipment supports, tower cranes, large engineering machinery steel structures, main steel beams of photovoltaic brackets, and other heavy-load stressed splicing areas. The connection relies on the pre-tightening force of the bolt to generate friction between steel plates for force transmission, offering strong seismic resistance and load stability.