Hitze Insights
Piping & Heating Technical Guides
Specification, certification and sourcing guides for wholesalers, contractors and private-label brands — written from the Hitze engineering desk.
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Latest technical guides
Underfloor Heating Manifold Installation: Position, Test, Screed and Commission
Install a UFH manifold to EN 1264-4: port count, Eurocone connections, the 4-6 bar DIN 18380 test, screed cover depths and the…
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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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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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Plastic Pipe Pressure Rating: PN, SDR, Schedule and Derating
Compare plastic pipe pressure ratings across PP-R, PEX, PE-RT, HDPE, CPVC and PVC. See why PN, SDR and Schedule are not interchangeable,…
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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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How to Build a PPR Distributor Range: Core Sizes, Fittings and Reorder Mix
Which PPR sizes and fittings to stock, how deep, and when to reorder. A working assortment method for plumbing wholesalers and importers.
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Resin Prices & Pipe Contracts: Indexation, Surcharges & Cost Locks
How pipe buyers use a resin price index in supply contracts: indexation clauses, trigger bands, surcharge vs reprice, fixed-price windows and FX…
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Pipe Packaging That Survives Transit: Coils, Pallets & Lengths
How pipe packaging fails in transit — coil wrap, strapping, carton specs, UV in port storage, damage clauses and a receiving checklist…
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Pre-Shipment Inspection for Pipe Orders: PSI, DUPRO & Loading
PSI vs DUPRO vs container loading checks for pipe imports: AQL numbers, pipe-specific checkpoints, inspector briefing and failure clauses, from Hitze.
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Importing Plumbing Pipe to Canada: CSA B137, cUPC & Duties
CSA B137 standards, cUPC certification, CBSA 6.5% tariff on pipe, duty-free fittings, 5% GST and CUSMA rules — a working guide to…
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