Pressure equipment
Flanges, valves and pressure vessels
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Application-led selection ยท PED 2014/68/EU certified
Fasteners by Industry, Application & Standard
Start with the equipment or service condition, then confirm the grade, pairing and documentation package for your project.
Start with your project
By Industry
Industry pages connect equipment, service conditions, standards and documentation to the products procurement teams actually need.
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Industrial Valve Fasteners
Matched bonnet, body and flange bolting for gate, globe, ball and check valves.
Explore industry โ๐ข๏ธ
Oil & Gas Fasteners
EPC, refinery and MRO packages with ASTM, PED, NACE and traceability documentation.
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Pressure Equipment
PED-certified stud bolts and flange bolting for pressure-boundary joints.
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Automotive & OEM
IATF 16949 manufacturing for drawing-based engine, chassis and special fasteners.
Explore industry โChoose the equipment
By Application
Flange Stud Bolts
A193/A320 stud bolts for ASME and EN flange assemblies.
View solution โValve Bonnet Studs
Controlled sets for valve body and bonnet pressure-boundary connections.
View solution โHeat Exchangers & Piping
High-temperature, corrosive and project-marked bolting for process equipment.
View solution โLNG & Low-Temperature Bolting
ASTM A320 L7 studs with impact-test and material documentation requirements.
View solution โConfirm the specification
By Standard
ASTM A193 B7
High-temperature Cr-Mo stud bolts for pressure and process applications.
Review standard โASTM A320 L7
Low-temperature alloy-steel stud bolts with impact-test documentation.
Review standard โPED / NACE / EN 10204
Compliance, sour-service and material traceability documentation for critical projects.
Review standard โEngineering tools & documents
Make the specification review faster
Bolt Torque Calculator
Estimate preload-to-torque values for common grades and lubrication conditions.
PED Documentation Checklist
Review certificate scope, grade pairing and EN 10204 documentation requirements.
Stud Bolt Specification Guide
Confirm grade, size, thread, coating and documentation requirements before RFQ.
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PED 2014/68/EU
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ISO 9001
๐ IATF 16949
๐ EN 10204 3.1/3.2
๐ฌ NACE MR0175
Need a specific grade, size or certification?
Send the application, standard, size, quantity and documentation requirements. Our technical sales team can prepare a quotation-ready package.
Request Technical QuoteEngineered for demanding applications
See where LOKRON high-strength fasteners perform: pressure equipment, process plants, power generation and precision vehicle systems.
Oil & gas
Pipeline and high-pressure flange service
Petrochemical
Heat exchangers and process piping
Power generation
High-temperature and critical-duty joints