Industrial Precision Fasteners
High-strength stud bolts and heavy hex nuts for pressure equipment, valves and critical industrial applications across process, energy, transport, and manufacturing sectors.
Our Capabilities
LOKRON โ Industrial Brand
B2B precision fasteners for pressure equipment, valve OEMs, EPC contractors and industrial OEMs worldwide. PED 2014/68/EU certified โ valid 2026โ2029.
- โข PED 2014/68/EU Certified (2026โ2029)
- โข ASTM A193 B7 / B8 / B8M Stud Bolts
- โข ASTM A194 2H / 7 / 8 Heavy Hex Nuts
- โข Technical datasheets & mill certificates
FLD Manufacturing
Suzhou Fulida (FLD): 20+ years manufacturing high-strength stud bolts, hex bolts and heavy hex nuts to ASTM, DIN and customer specifications.
- โข IATF 16949 Automotive Grade
- โข Hot / Cold Heading: M6 โ M36
- โข CNC Precision: ยฑ0.01mm tolerance
- โข Heat Treatment โ in-house process control
Industries We Serve
Our stud bolts and heavy hex nuts are deployed in flanged pipe systems, industrial valves, heat exchangers, pressure vessels and machinery assemblies across critical industries worldwide.
Oil & Gas
Pipeline flanges, wellhead equipment, pressure vessels
Petrochemical
Reactors, heat exchangers, process piping
Power Generation
Turbine casings, boiler assemblies, steam systems
Industrial Valves
Gate, globe, ball & check valves โ all pressure classes
Automotive
Engine, chassis and driveline fastening solutions
Rail Transit
High-speed rail and metro structural fasteners
Give procurement and engineering teams a practical preload-to-torque reference.
Our interactive calculator estimates tightening torque for ASTM A193 B7 and A320 L7 stud bolts using preload, yield percentage, diameter, and friction condition, with dedicated support for low-friction PTFE-coated assemblies.
Industrial stud bolting for valve and pressure equipment service.
LOKRON Genuine Xylan PTFE coating for lower friction scatter and smoother torque transfer.
Trusted By Industry Leaders
JW NEWAY
SUFA
Dongfeng Motor
China Railway
Douson Group
Evalve
Sinopec
Tianye GroupJW NEWAYSUFADongfeng MotorChina RailwayDouson GroupEvalveSinopecTianye Group