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
Does PPR Pipe Need Insulation? Four Cases, Four Answers
Does PPR pipe need insulation? Yes on hot and chilled runs, and on German cold lines since 1 Jan 2024. Thicknesses from…
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How to Connect PVC Pipe to PPR Pipe Without a Weak Joint
If you are asking how to connect PVC pipe to PPR pipe, you have almost certainly already tried the obvious thing and…
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PPR Pipe Meaning: What PP-R, PPR and PPRC Actually Stand For
You see the letters PPR on a pipe, a quote, and a competitor’s catalogue — and three of them spell it differently.…
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Private Label PP-R Pipe: Print, Certificates and Real Minimums
Private label PP-R pipe: which ISO 15874-2 marking fields are yours, which print route survives site handling, and who becomes the legal…
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PPR Pipe Size Chart: mm to Inch, Wall Thickness & BSP/NPT Threads
Full 20-110 mm PPR size chart: mm to inch, OD tolerance, wall per SDR, and BSP vs NPT thread designation to put…
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PPR Supplier RFQ Checklist: Compare Quotes and Terms
Compare PPR supplier quotes using size, series, duty and packing. Confirm MOQ units, timing start events and certificate scope before award.
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Fiber Reinforced PPR Pipe vs Standard vs PPR-AL-PPR: What to Specify
Fiber reinforced PPR pipe falls under ISO 21003, not ISO 15874 — and 0.035 mm/m·K is a published minimum, not a property.…
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PPR Pipe Factory Audit: 8 Numbers to Check Before You Order
The plant manager walks you past a wall of framed certificates, then stops at a rack of blue pressure-test benches and says…
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PP-R Joint Failure: Proving Whether It Was the Pipe or the Weld
ISO 15874 separates a PP-R material defect from a bad weld. A step-by-step evidence procedure for importers and distributors facing a joint…
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Antibacterial PPR Pipe: What to Demand Before You Specify It
What ISO 22196 and JIS Z 2801 really measure, why lab coupon results do not predict a circulating riser, and the 8…
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