High-Strength Fasteners, Made and Exported
Specializing in hex bolts, nuts, PV fasteners and custom parts, manufactured to GB / DIN / ISO / ANSI standards for infrastructure, energy and machinery customers worldwide.
Manufacturing & Quality
Full-process control from raw material to surface finish, with mill certificates and test reports by batch.
Full Standards Coverage
Manufactured to GB, DIN, ISO and ANSI/ASME standards, with imperial, US and metric specifications available.
Wide Material & Class Range
Carbon steel 4.6–12.9, stainless steel A2/A4 and alloy steel, with matching nuts and washers.
Proven Surface Finishing
Electro-galvanizing, hot-dip galvanizing, Dacromet and blackening, matched to salt-spray duration and service environment.
Testing & Quality Control
Tensile, hardness, metallographic, salt-spray and magnetic particle testing, with mill certificates and test reports by batch.
Standard & Custom Fasteners
Bolts, nuts, washers, threaded rods and custom parts, with flexible combinations of material, standard and surface finish.
Hex Bolts
DIN933 / DIN931, GB/T 5782 / 5783, ISO 4014 / 4017, sizes M6–M64.
Hex Nuts
DIN934, GB/T 6170, ISO 4032, type 1 / type 2, sizes M6–M64.
High-Strength Bolts
Class 8.8 / 10.9 / 12.9, for steel structures, bridges and heavy machinery.
PV Fasteners
For PV mounting systems, in hot-dip galvanized and stainless steel for long-term outdoor corrosion resistance.
Washers
Flat washers, spring washers and lock washers, DIN125 / DIN127, GB/T 97.1 / 93.
Threaded Rods
DIN975 / DIN976, in A2/A4 stainless steel and carbon steel, cut to length available.
Anchor Bolts
L-type / J-type / anchor bolts for equipment foundations and steel column bases.
Custom Parts
Non-standard bolts, stud bolts, stepped shafts and cold-headed parts made to drawings.
Standards
Products are manufactured to GB, DIN, ISO and ANSI/ASME standards. Imperial, US and metric specifications are available, and custom parts can be made to drawings.
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