Technical Insights
Practical guides on fastener grade selection, PED compliance, coatings and industry standards — written by LOKRON engineers.
ASTM A193 B7 vs B8: How to Choose the Right Stud Bolt Grade
A comprehensive guide to selecting between ASTM A193 B7 (Cr-Mo alloy) and B8 (304 stainless) stud bolts for pressure equipment flanges — covering temperature range, corrosion resistance, sour service, and real procurement pitfalls our engineers encounter in the field.
PED 2014/68/EU: What It Means for Fastener Procurement in Europe
Understanding the Pressure Equipment Directive and why PED-certified fasteners are legally required for pressure equipment in EU markets — including full procurement checklist, how to verify a Notified Body certificate, and what LOKRON's PED approval (No. MUE-008-002-2026) covers.
Fastener Coatings for Outdoor & Offshore: Hot-Dip Galvanising vs PTFE/Xylan
Comparing hot-dip galvanising and PTFE (Xylan) coatings for high-strength stud bolts — corrosion protection levels, galling prevention, operating temperature limits, and LOKRON's coating selection guide based on 20+ years servicing offshore, onshore, and chemical process applications.
Bolt Torque vs Tension: Achieving Flanged Joint Integrity in Critical Service
Why torque alone is an unreliable measure of bolt load in flanged joints, and how to apply ASME PCC-1 guidelines, friction coefficient management, and proper joint assembly techniques to achieve reliable sealing in critical industrial applications.
MRO Fastener Procurement: How Distributors and MRO Buyers Can Reduce Cost and Risk
Practical guidance for MRO distributors, maintenance procurement teams, and industrial buyers on reducing fastener procurement risk, managing counterfeit material, ensuring documentation compliance, and building resilient supply chains.
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