ISO 4437:2007

Standard
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Norwegian title: Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications
English title: Buried polyethylene (PE) pipes for the supply of gaseous fuels — Metric series — Specifications
Item type: Standard
Language: Engelsk
Edition: 3 (2007-06-19)
Supersedes: ISO 4437:1997 Alert Withdrawn
ISO 4437:1997/Cor 1:1999 Alert Withdrawn
Superseded by: ISO 4437-1:2014 Check Published
ISO 4437-2:2014 Check Published
ISO 4437-3:2014 Check Published
ISO 4437-5:2014 Check Published
Number of pages: 22
Price:

NOK 1 176,00 (excl. VAT)
NOK 1 470,00 (with VAT)

Scope: <p>This International Standard specifies the general properties of the polyethylene (PE) compounds for the manufacture of pipes, the physical and mechanical properties of the pipes made from these compounds, and the requirements for the marking of such pipes, intended to be used for the supply of gaseous fuels.</p><p>It deals with three types of pipe:</p><list list-type="bullet"><list-item><label>—</label><p>PE pipes (outside diameter <italic><styled-content style="font-family:Times New Roman">d</styled-content></italic><sub>n</sub>) including any identification stripes;</p></list-item><list-item><label>—</label><p>PE pipes with co-extruded layers on either or both the outside and/or inside of the pipe (total outside diameter <italic><styled-content style="font-family:Times New Roman">d</styled-content></italic><sub>n</sub>) as specified in <xref ref-type="app" rid="sec_C">Annex C</xref>, where all layers have the same MRS rating;</p></list-item><list-item><label>—</label><p>PE pipes (outside diameter <italic><styled-content style="font-family:Times New Roman">d</styled-content></italic><sub>n</sub>) with a peelable, contiguous thermoplastics additional layer on the outside of the pipe (“coated pipe”) as specified in <xref ref-type="app" rid="sec_D">Annex D</xref>.</p></list-item></list><p>This International Standard also gives guidance on a calculation and design scheme on which the maximum operating pressure (MOP) of the pipes is based. The pipes are intended to be buried.</p><non-normative-note><label>NOTE</label><p>For above-ground application of pipes conforming to this International Standard, the pipes need always to be protected by a casing pipe.</p></non-normative-note>
Committee: SN/K 084
Adopted: 2007-06-19
Withdrawn: 2014-01-13
ICS: 83.140.30 - Plastrør, - deler og -ventiler
75.200 - Utstyr til håndtering av petroleumsprodukter og naturgass