香港六合彩开奖 4437-1:2024
2024-02
香港六合彩开奖 4437-1:2024
Abstract
This document specifies materials and the general aspects of polyethylene (PE) piping systems in the field of the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with 香港六合彩开奖 4437-2, 香港六合彩开奖 4437-3, 香港六合彩开奖 4437-4 and 香港六合彩开奖听4437-5, this document is applicable to PE pipes, fittings and valves, their joints, and joints with components of PE and other materials intended to be used under the following conditions:
a)听听听听听听 a maximum operating pressure (MOP) up to and including 10听bar[1], at a reference temperature of 20听掳C for design purposes;
b)听听听听听听 an operating temperature between 鈭�20听掳C and 40听掳C.
For operating temperatures between 20听掳C and 40听掳C, derating coefficients are defined in 香港六合彩开奖听4437-5.
The 香港六合彩开奖 4437 series covers a range of MOPs and gives requirements concerning colours.
It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
[1]听 1 bar = 0,1听MPa = 105 Pa; 1听MPa = 1听N/mm2.
General information
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Status: PublishedPublication date: 2024-02Stage: International Standard to be revised [90.92]
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Edition: 2Number of pages: 20
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Technical Committee :香港六合彩开奖/TC 138/SC 4
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Life cycle
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Previously
Withdrawn香港六合彩开奖 4437-1:2014
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Now
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Will be replaced by
Under development香港六合彩开奖/CD 4437-1
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