Industrial Fastener Manufacturer
LOKRON manufactures PED-certified stud bolts, ASTM A193 B7 and A320 L7 bolting, and drawing-based fasteners for pressure equipment, valves and industrial projects.
Our Capabilities
LOKRON โ Industrial Brand
B2B stud bolts and flange bolting packages for pressure equipment, valve OEMs, EPC contractors and industrial users 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 Technical datasheets & mill certificates
FLD Manufacturing
Suzhou Fulida (FLD): 20+ years manufacturing high-strength stud bolts and hex bolts 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 ASTM stud bolts are deployed in flanged pipe systems, industrial valves, heat exchangers, pressure vessels and machinery assemblies across critical industries worldwide.
Oil & Gas Fasteners
Stud bolts for pipeline flanges, wellhead equipment and pressure vessels
Petrochemical Fasteners
Bolting for reactors, heat exchangers and corrosive process piping
Power Generation Fasteners
High-temperature bolting for turbine casings, boiler assemblies and steam systems
Industrial Valve Fasteners
Matched stud-and-nut sets for gate, globe, ball and check valves
Automotive
Engine, chassis and driveline fastening solutions
Rail Transit
High-speed rail and metro structural fasteners
Popular Engineering Paths
Start with the pages procurement engineers and application teams use most: torque reference, grade pairing, and PED-certified product scope.
Stud Bolt Torque Calculator
Estimate preload-to-torque for ASTM A193 B7 and A320 L7 assemblies.
Bolt & Nut Pairing Reference
Review grade, size, thread, coating and documentation requirements before requesting a quotation.
PED Certified Grade Index
Review PED-certified grades, sizes, documents and typical pressure-equipment uses.
ASTM A193 B7 Stud Bolts
Specification, dimensions and documentation for high-pressure stud bolting.
ASTM A320 L7 Stud Bolts
Low-temperature stud-bolt selection, impact testing and project documents.
Industrial Valve Fasteners
Matched stud-and-nut sets for valve OEM, EPC and pressure-boundary applications.
Give procurement and engineering teams a practical preload-to-torque reference.
Our interactive calculator works as a practical stud bolt torque chart for ASTM A193 B7, B7M, B16 and ASTM A320 L7, L7M assemblies 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.
Ready for a quotation?
Send the specification. We will prepare the supply package.
Include the standard, grade, size, quantity, coating and documentation requirements. Our technical sales team can review drawings and return a quotation-ready response.
Trusted By Industry Leaders
JW NEWAY
SUFA
Dongfeng Motor
China Railway
Douson Group
Evalve
Sinopec
Tianye GroupJW NEWAYSUFADongfeng MotorChina RailwayDouson GroupEvalveSinopecTianye Group