Hitze Insights
Certifications & Compliance
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Technical articles and updates
cUPC vs NSF vs UPC: Which Certification Your US Plumbing Import Needs
cUPC, NSF and UPC certify different things. See which mark unlocks the US market for imported plumbing pipe and how to verify…
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WRAS, DVGW & KTW: Certifying Plumbing Pipe for the UK & EU
WRAS vs DVGW vs KTW for potable pipe: which mark unlocks the UK vs Germany, the EU positive-list transition, and how importers…
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DIN 4726 Oxygen Barrier: Why It Matters for Radiant-Heating Pipe
DIN 4726 explained: why oxygen-barrier pipe stops boiler corrosion in radiant heating, where you need it, and how Hitze builds PE-RT &…
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Declaration of Performance (DoP) & CE Marking for Pipe: A Buyer’s Guide
Why your PEX & PP-R water pipe has no CE mark or DoP under the CPR, what proves compliance instead, and the…
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Certification-Pack Checklist: Documents to Demand From Your Pipe Supplier
The exact certification pack to demand from a pipe supplier before you pay: certificates, test reports, mill certs and how to verify…
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