Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1986-08-22
1989-04-25
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
138140, 138149, 138177, 428462, 428455, 428519, 428217, 428492, 428521, 428 368, F16L 914
Patent
active
048247057
ABSTRACT:
Insulated pipe especially but not exclusively intended for subsea pipelines for transport of oil, gas and similar products which pipe comprises a steel pipe as core, a layer of corrosion protection material, a layer of thermally insulating material surrounding this and an external protective layer surrounding the insulating layer. To improve such insulated pipes so that they are capable of resisting occurring stresses even when placed under water at great depths the three layers contain rubber, the lyaer further containing cork up to 30-70% by volume.
REFERENCES:
patent: 1668635 (1928-05-01), Stefani
patent: 4219173 (1980-08-01), Forbes
patent: 4590971 (1986-05-01), Webster et al.
patent: 4632865 (1986-12-01), Tzur
Hoel Lars
Persson Sture
Robinson Ellis P.
Siedleck James J.
Skega AB
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