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Technical articles and updates
Go/No-Go Thread Gauges at Goods-In: Verifying the Brass Inserts on Plastic Fittings
Gauge Rp, R, G and NPT brass-insert threads on PP-R fittings at goods-in: ISO 7-2 step plugs, the ISO 228-2 two-turn NOT…
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How a Moulded PP-R Fitting Is Traced: Cavity Numbers, Lot Codes and the COO Declaration
ISO 15874-3 requires four marks on a PP-R fitting body; cavity and lot codes are optional. How to trace a failed fitting…
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PPR Pipe Manufacturing Process: What Each Station Controls
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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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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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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Virgin vs Recycled PPR Pipe Material: What Buyers Can Verify
The ISO 15874 clause that governs recycled content, the melt flow rate limits that expose blending, and the four documents to request…
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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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Factory vs Trading Company: How to Tell Who Actually Makes Your Pipe
Six remote tells that expose a factory vs trading company before you wire a deposit: license scope, certificate holder names, live video…
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Plumbing Trade Shows (ISH, MCE, AHR): Where to Meet Pipe Manufacturers
Verified ISH 2027, AHR 2027 and MCE 2028 dates, booth questions that expose traders, and the post-show loop importers use to find…
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Reading a Pipe Supplier Quotation: 9 Line Items That Reveal Quality
Nine line items on a pipe supplier quotation that expose cut corners: material grade, EN ISO class, SDR, CW617N brass, DIN 4726…
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