Author

Justin

Justin

Senior Piping Industry Expert

Justin leads technical content at Hitze, where he translates 50 years of German-engineered piping know-how into guidance trade buyers can actually use. He works across the full system — multilayer PEX-AL-PEX, PEX-a/b/c, PE-RT underfloor pipe, PP-R and PPR-CU, plus press, compression, push-fit and lead-free brass fittings and manifolds — from resin grades, crosslinking and heat-fusion methods through to hydrostatic and oxygen-barrier performance. His focus is the part that trips up importers and private-label brands most: the certification maze (cUPC, NSF/ANSI 61, DVGW, WRAS, SKZ, CE with Declaration of Performance) that decides which product clears which market, and how to verify a factory before a container order. He writes for wholesalers, importers, contractors and private-label brands sourcing plumbing and heating pipe for North America and Europe.

By this author

Guides & Articles

PPR Pipe Cutter Sizes: Match the Tool to the Pipe | Hitze
Fittings & Systems

PPR Pipe Cutter Sizes: Match the Tool to the Pipe | Hitze

PPR pipe cutter sizes are sold by one number: the maximum outside diameter the tool can shear. Walk a tool counter and…

August 1, 2026 · 14 min read
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How to Connect PPR Pipe to GI, Copper and Threaded Brass
PP-R Systems

How to Connect PPR Pipe to GI, Copper and Threaded Brass

The four real PPR-to-metal transition SKUs, BSP vs NPT thread limits, sealant rules and where the brass insert lets go. For contractors…

August 1, 2026 · 22 min read
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PPR Fittings Names: Read a Catalogue Without Ordering Wrong
Fittings & Systems

PPR Fittings Names: Read a Catalogue Without Ordering Wrong

A PP-R range is eight fitting families — socket, elbow, tee, reducer, end cap, union, brass-insert fitting and saddle — and every…

July 31, 2026 · 14 min read
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PPR Pipe Price Guide: What Actually Drives the Quote
Import & Wholesale

PPR Pipe Price Guide: What Actually Drives the Quote

PPR pipe price lists rarely tell you what you are actually paying for. Two suppliers can quote the same de25 PN25 pipe…

July 30, 2026 · 13 min read
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Underfloor Heating Manifold Installation: Position, Test, Screed and Commission
Fittings & Systems

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…

July 29, 2026 · 38 min read
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PPR Pipe Sample Testing: The Approval Checklist Before You Order
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…

July 27, 2026 · 32 min read
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Fusion Pipe Welding: Socket vs Butt vs Electrofusion by Size
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…

July 26, 2026 · 23 min read
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Plastic Pipe Pressure Rating: PN, SDR, Schedule and Derating
PP-R Systems

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,…

July 26, 2026 · 14 min read
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EN ISO 15874 for PP-R Pipe: Service Classes Explained
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…

July 26, 2026 · 22 min read
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How to Build a PPR Distributor Range: Core Sizes, Fittings and Reorder Mix
PP-R Systems

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.

July 25, 2026 · 20 min read
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