Stndard length tolerances for plastic profiles
Stndard length tolerances for plastic profiles
(OP)
If I have 5000mm long PEX pipe, should I put +-30 mm tolerance or not? What are standards for tolerances for plastic and other materials?
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RE: Stndard length tolerances for plastic profiles
RE: Stndard length tolerances for plastic profiles
For the extruded shape, the tolerance should be specified by the manufacturer or some industry spec.
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli
RE: Stndard length tolerances for plastic profiles
looslib, it is not question of particular number, more like how to evade putting tolerances on all lengths by placing ISO standard in title block. I would like to know what ISO I can use for plastic as 2768 is too tight, we do not need to increase cost by requesting supplier to deliver plastic pipes with lengths tolerances by ISO 2768.
So is there any ISO that I can refer to, or just to make table with acceptable tolerances for pipe and place it next to title block?
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RE: Stndard length tolerances for plastic profiles
There are local standards adopted by different countries. To the best of my knowledge, none of them go as far as 5000 mm nominal dimension range.
"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future
RE: Stndard length tolerances for plastic profiles
Using 2768-v for the tolerance class, the tolerance table only goes to 4m which is +/-8mm, so a 5m length would require you to apply your own tolerance.
"Wildfires are dangerous, hard to control, and economically catastrophic."
Ben Loosli
RE: Stndard length tolerances for plastic profiles
Plastics piping systems — Plastics components — Determination of dimensions
RE: Stndard length tolerances for plastic profiles
Take closer look:
From ISO 2768-1, Paragraph 1 Scope:
"It applies to dimensions of parts that are produced by metal removal or parts that are formed from sheet metal"
"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future