Hitze Insights
Specification, certification and sourcing guides for wholesalers, contractors and private-label brands — written from the Hitze engineering desk.
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Begin with the system overview, then use the latest technical articles for a specific decision.
What is PPR pipe? Understand PP-R materials, fusion, standards, sizes, ratings, potable-water checks, installation and project selection.
PEX-a vs PEX-b vs PEX-c by manufacturing method: crosslinking %, flexibility, kink repair and the one fitting rule that actually matters for your install.
PEX vs PEX-AL-PEX multilayer pipe, decided by the run: oxygen barrier, thermal expansion, jointing and best-for/not-for from a German-brand pipe maker.
Size an underfloor heating manifold by loop count and flow rate: ports, flow meters, brass vs stainless, and the interfaces that actually fit.
Press, compression or push-fit? A contractor's guide to which joint won't leak: code limits (ASSE 1061, IAPMO), jaw profiles and pipe-tolerance traps.
Latest research
There is no colour code for PPR pipe. ISO 15874-2:2013 lists eight marking items and colour is not one. What to specify…
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PPR pipe UV resistance is a maker's claim, not a standard requirement: ISO 15874 scopes PP-R to installations within buildings. The clauses…
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The five stations of PP-R pipe production, each paired with the ISO 15874-2 clause it must satisfy: resin, extrusion, calibration, marking, batch…
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Can you bend PPR pipe? Only as a long deflection: 100 x OD per Aquatherm, no published heat-bending method, and ISO 15874-2…
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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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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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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: which ISO 15874-2 marking fields are yours, which print route survives site handling, and who becomes the legal…
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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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A PPR pipe supplier checklist that grades the answers: fix OD, series, class and packing so three quotes compare, and read what…
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Tell us your market, product lines and volumes — we reply with pricing, MOQ and the certification documents for your region.
