This article previously presented DIN 8077 and DIN 8078 as the dimensional and quality standards for polyethylene (PE/HDPE) pipe. That was incorrect, and we are correcting it in public rather than quietly deleting the page.
DIN 8077 and DIN 8078 are polypropylene (PP) standards — DIN 8077 covers PP pipe dimensions and DIN 8078 covers PP general quality requirements and testing. The standards that actually cover polyethylene are a different pair: DIN 8074 for PE pipe dimensions and DIN 8075 for PE general quality requirements. Any sentence on this page that described DIN 8077/8078 as a PE sizing authority was an error of attribution, not a typo, and every conclusion built on it was unreliable.
Two things are separately true and worth keeping apart. Our HDPE pipe does carry the printed marking “GERMANY STANDARD DIN8077/8078” (per our catalogue) — that marking is a fact a buyer can see on the product. Whether those standard numbers are the correct ones to cite for a PE pipe is a different question, and the honest answer is that they are not. We would rather you read that from us than discover it during a tender review.
The complete, source-checked HDPE sizing material — outside diameter and wall thickness in mm, how SDR sets the PN rating, what DIN 8074/8075 actually cover, and how to read our marking against a tender’s technical schedule — is now published in one place:
Read the corrected guide — HDPE Pipe Diameter Chart
This page is kept only as a correction record. Its content has been merged into the HDPE Pipe Diameter Chart, which is the canonical version.
Four designation systems that do not agree with each other, reconciled against the sizes we actually manufacture.
The metric range we actually manufacture, with the catalogue wall thickness for every one of the nine sizes we make, and a clear statement of where the range stops.
Our PPR line is three sizes deep.
