Hitze Insights
PP-R pipe
Sourcing & Vetting
PPR Pipe Sample Testing: The Approval Checklist Before You Order
How to test a PP-R pipe sample before you approve it: ISO 15874 dimension limits, the ovality gap, joint tests, certificate scope…
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PP-R Systems
Fusion Pipe Welding: Socket vs Butt vs Electrofusion by Size
Fusion pipe welding is not one process with three brand names. It is three genuinely different physics problems, and the standards treat…
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Certifications & Compliance
EN ISO 15874 for PP-R Pipe: Service Classes Explained
A PN20 label tells you almost nothing about whether a PP-R pipe survives 50 years on your heating circuit. The service class…
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