When it comes to large-scale engineering and industrial applications, selecting the right GB stud bolt manufacturer is critical for ensuring durability, precision, and safety.
Hardhawk Fastener specializes in producing GB-standard double-end threaded bolts that comply with GB/T specifications, serving global distributors, EPC contractors, and OEM partners.

What Are GB Stud Bolts?
GB stud bolts are manufactured to Chinese National Standards (GB/T), offering precise dimensions and reliable mechanical strength. They are widely used in:
- Pipeline flange connections
- Pressure vessel installation
- Steel structure assembly
- Heavy machinery fastening
Key Specifications:
- Standards: GB/T 901, GB/T 5783, GB/T 897
- Sizes: M6โM100
- Grades: 8.8, 10.9, 12.9
- Materials: Carbon steel, alloy steel, stainless steel (SS304, SS316)
- Surface Treatments: Hot-dip galvanizing, zinc plating, PTFE coating, black oxide
Why Choose Hardhawk as Your GB Stud Bolt Manufacturer?
Strict GB/T Standard Compliance
We ensure every stud bolt meets GB national standards, guaranteeing interchangeability and strength.
Factory-Direct Supply
Bulk production capacity ensures competitive pricing and stable supply for wholesale customers.
Custom Manufacturing
We offer OEM/ODM services, including non-standard dimensions, special coatings, and private labeling.
Comprehensive Quality Control
From raw material inspection to final torque testing, our QC process ensures zero defects.
Industries That Rely on GB Stud Bolts
| Industry | Application |
|---|---|
| Oil & Gas | Flange joint fastening |
| Power Generation | Turbine and boiler assembly |
| Marine Engineering | Hull and deck structures |
| Petrochemical | Pressure vessel joints |
| Construction | Steel structure connections |
Explore Our Stud Bolt Range
We supply both GB and ASTM/ISO standard stud bolts, making us a one-stop solution for international projects.
View our stud bolt products here
Conclusion
As a trusted GB stud bolt manufacturer in China, Hardhawk Fastener combines quality assurance, competitive pricing, and global delivery to meet the needs of B2B wholesale buyers.
Contact us today to discuss your order requirements and request a free technical datasheet.