<p>ISO 21809-1:2011 specifies requirements of plant-applied external three-layer polyethylene- and polypropylene-based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623.</p>
<p>Pipes coated in accordance with ISO 21809-1:2011 are considered suitable for further protection by means of cathodic protection.</p>
Registration number (WIID)
35997
Scope
<p>ISO 21809-1:2011 specifies requirements of plant-applied external three-layer polyethylene- and polypropylene-based coatings for corrosion protection of welded and seamless steel pipes for pipeline transportation systems in the petroleum and natural gas industries in accordance with ISO 13623.</p>
<p>Pipes coated in accordance with ISO 21809-1:2011 are considered suitable for further protection by means of cathodic protection.</p>
