Site na mmepe na-aga n'ihu nke ala mmanụ na gas na-aga n'ihu, pipeline maka ibufe ego mmanụ na gas na-eto eto.Ugbu a mkpuchi Ọdịdị pipeline submarine ejiri tumadi 3LPE na FBE.Okpomọkụ eji ogologo oge 3LPE anaghị agafe 70℃, obere oge ruo 80℃.N'ihe gbasara ibufe mmanụ ọkụ karịrị 80℃, na-eji 3LPE mkpuchi Ọdịdị bụ n'ụzọ doro anya na-adịghị izute teknuzu chọrọ.Ezie na ogologo oge ojiji okpomọkụ mkpuchi FBE nwere ike iru 115℃, izute n'elu imewe okpomọkụ chọrọ, ma FBE mkpuchi kenkuwa, ekweghị ekwe n'ibu mmebi na iga na Offshore ọkpọkọ-ịtọ, mgbochi corrosion mkpuchi mmebi bụ ihe ka njọ, Ugbu subsea pipelines n'ozuzu adịghị akwado iji corrosion n'ụdị a. otu oyi akwa FBE.

Iji n'ụzọ dị irè lebara ọnọdụ njem na elu okpomọkụ subsea pipeline corrosion nsogbu, mba ọzọ e ọma 3LPP mkpuchi Ọdịdị ka pipeline, dị ka Gulf of Mexico miri subsea pipelines na UK North Sea mmanụ na gas pipelines, wdg, na-eji 3LPP. Ọdịdị, ma 3LPP mkpuchi etinyere na subsea pipeline na mba ọ dịghị ihe mbụ.

Polypropylene nwere magburu onwe n'ibu Njirimara, ya mkpụrụ, tensile, mkpakọ ike, hardness, elasticity na eyi iguzogide karịa elu njupụta na otú polyethylene (HDPE) elu, na polypropylene nnọọ ala mmiri absorption, mmiri 24h The mmiri absorption nke naanị 0.01%, dị ala karịa HDPE.Polypropylene na-eguzogide nkwụsi ike kemịkalụ, mkpuchi ọkụ, na njupụta dị ala karịa polyethylene.N'ihe banyere iguzogide okpomọkụ, ogologo oge iji polyethylene gbanwetụrụ na okpomọkụ nke -30 ~ 110℃.A na-emepụta 3LPP na ndabere nke 3LPE mkpuchi na arụmọrụ dị mma nke mkpuchi mgbochi corrosion.3LPP 3LPE ụkpụrụ na Ọdịdị yiri nke nakweere na n'okpuru ígwè fusion bonded epoxy (FBE), na-amụba adhesion na metal, n'etiti a polypropylene copolymer adhesive (PPA) oyi akwa, na elu oyi akwa nke polypropylene (PP). njikọ siri ike, ma nnukwu iguzogide ikike imebi ihe, yana ezigbo nguzogide nbipu nke cathodic.3LPP gbanwere site na mkpuchi mkpuchi, ojiji nke okpomọkụ karịa 110℃, ya magburu onwe iguzogide corrosion na elu okpomọkụ arụmọrụ iji merie ndị sara mbara ahịa atụmanya, elu okpomọkụ mkpuchi adịghị eme ka ndị ọzọ adịghị eru eru, iji nweta na a elu okpomọkụ na nzube na miri mmiri ngwa ngwa, ọ na-apụta ọzọ elu mgbochi corrosion mkpuchi. mba ụwa.