Technical articles
Written by the engineers who specify and make the pipe, for the people who have to choose it. Each piece is dated and signed.
SDR and Pressure Rating, in Metric and Imperial
One ratio decides what a polyethylene pipe can hold. The trouble is that half the world expresses the answer in bar and the other half in psi, from two different formulas, and a tender written in one convention is routinely quoted in the other.
Zhang Wei · 11 min read
Butt Fusion or Electrofusion: A Decision, Not a Preference
Every article on this subject ends with "it depends on your project". That is true and useless. The dependency is short, and it can be written down: four questions decide it, and only one of them is about the pipe.
Li Jun · 9 min read
HDPE, Ductile Iron or PVC: An Honest Comparison from a Pipe Maker
Almost everything written on this comparison is published by someone who sells one of the three. This page is no exception — we extrude polyethylene. So rather than ask you to trust the conclusion, this sets out where each material actually wins, including the two arguments against our own product that we think are correct.
Chen Hao · 13 min read
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