Original
By certification 
Product details
Product name |
GB/T122 10.9 High strength structural bolt |
Surface Treatment |
Black oxide/Yellow, blue, white zinc plated, Galvanized/HDG/Chromate/Dacromet |
Material |
Carbon steel/stainless steel SS304, A2 ,Stainless steel SS314,A4. |
Color |
Black/gray/according to customer require |
Size |
M12-36,M2-M100 customization for your drawing |
Usage |
Concretestructural formwork |
Certificate |
ISO9001:2008,, ROHS, SGS |
MOQ |
500kg |
delivery time |
2-3days after deposit |
Supply Ability |
500tons per Month |
packing |
Bulk/carbon then wood Pallet or As clients requirement |
Payment term |
T/T ,30% deposit ,70% balance before shipment |
Sample |
Sample is free |
Testing Equipment and ISO:9001 2008 System for Quality Assurance
Optical filter instrument and hardness testing equipment are used for products
ISO9001:2008 System and ROHS Certificates for all processing
Instructions
The working principle of high-strength bolt connection is to intentionally apply a large pre-tension to the bolt, so that the contact surface of the connecting parts will produce extrusion pressure, so that the vertical straight in the direction of the screw has a lot of friction, relying on this friction to transfer the connection shear force. The pre-tension of high-strength bolts is realized by tightening nuts. The bolts connected by high-strength bolts are made of 10.9s or 8.8s quality alloy structural steel after heat treatment. Holes for high-strength bolts shall be drilled into holes.
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