BS ISO 4437-1:2014 pdf free

BS ISO 4437-1:2014 pdf free.Plastics piping systems for the supply of gaseous fuels – Polyethylene (PE)
This part of ISO 4437 specifies the general properties of polyethylene (PE] compounds for the manufacture of pipes and fittings intended to be used for the supply of gaseous fuels.
It also specifies the test parameters for the test methods referred to in this International Standard.
In conjunction with ISO 4437-2, IS0 4437-3, ISO 4437-4, and ISO 4437-5, it 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) the maximum operating pressure (MOP), is based on the design stress determined from the compound minimum required strength ( MRS) divided by the C factor, and taking into account rapid crack propagation (RCP) requirements;
b) a temperature of 20℃ as reference temperature for the design basis.
NOTE 1 For other operating temperatures, guidance is given in IS0 4437-5:2014.
NOTE 2 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.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IS0 472, Plastics一Vocabulary
ISO 1043-1, Plastics 一Symbols and abbreviated terms 一Part 1: Basic polymers and their special characteristics
ISO 1133-1, Plastics一Determination of the melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics一Part 1: Standard method
ISO 1167-1, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids一Determination of the resistance to internal pressure一Part 1: General method
ISO 1167-2, Thermoplastics pipes, fttings and assemblies for the conveyance of fuids一Determination of the resistance to internal pressure一Part 2: Preparation of pipe test pieces.BS ISO 4437-1 pdf download.