Ndikukula kosalekeza kwa minda yamafuta ndi gasi yakunyanja, mapaipi otengera kuchuluka kwa mafuta ndi gasi akunyanja akukulirakulira.Panopa ❖ kuyanika mapaipi apansi pamadzi amagwiritsidwa ntchito makamaka 3LPE ndi FBE.3LPE kutentha kwa nthawi yayitali sikudutsa 70℃, kwanthawi yayitali mpaka 80℃.Ponena za kunyamula mafuta osapsa kutentha kuposa 80℃, ntchito 3LPE ❖ kuyanika kapangidwe mwachionekere si kukwaniritsa zofunika luso.Ngakhale kutentha kwanthawi yayitali kwa FBE kupaka kumatha kufika 115℃, kuti akwaniritse zofunikira za kutentha kwapamwamba, koma FBE ❖ kuyanika brittle, tsankho kuwonongeka kwa makina oyendetsa ndi kuyika chitoliro kumtunda, kuwonongeka kwa anti-corrosion ❖ kuwononga kwambiri, Panopa mapaipi apansi pa nyanja nthawi zambiri samalimbikitsa kugwiritsa ntchito dzimbiri mu mawonekedwe a FBE imodzi yokha.

Kuti athane ndi zovuta zama mayendedwe pazovuta zapaipi zapaipi zam'madzi zam'madzi, mayiko akunja adakwanitsa 3LPP ❖ kuyanika kapangidwe ka payipi, monga Gulf of Mexico madzi akuya pansi panyanja mapaipi ndi mapaipi amafuta ndi gasi ku UK North Sea, etc., amagwiritsidwa ntchito 3LPP. kapangidwe kake, koma zokutira za 3LPP zomwe zimagwiritsidwa ntchito pamapaipi apanyanja zam'madzi mdziko muno palibe chitsanzo.

Polypropylene ili ndi zinthu zabwino zamakina, zokolola zake, zolimba, zolimba, kulimba, kukhazikika komanso kulimba kwamphamvu kuposa kachulukidwe kapamwamba komanso polyethylene (HDPE) yapamwamba, komanso mayamwidwe amadzi a polypropylene otsika kwambiri, madzi 24h Mayamwidwe amadzi ndi 0.01% okha, otsika kwambiri kuposa HDPE.Polypropylene kugonjetsedwa ndi kukhazikika kwa mankhwala, kutsekemera kwa magetsi, ndi kutsika kochepa kuposa polyethylene.Pankhani ya kukana kutentha, kugwiritsa ntchito nthawi yayitali polyethylene yosinthidwa pa kutentha kwa -30 ~ 110℃.3LPP imapangidwa pamaziko a 3LPE zokutira pakuchita bwino kwa zokutira zotsutsana ndi dzimbiri.3LPP 3LPE mfundo ndi kapangidwe ofanana ndi anatengera mu zapansi zitsulo maphatikizidwe omangika epoxy (FBE), kuonjezera adhesion kwa zitsulo, pakati polypropylene copolymer zomatira (PPA) wosanjikiza ndi wosanjikiza kunja kwa polypropylene (PP) chomangira cholimba, onse kukana kwambiri kuwonongeka kwa mawotchi, komanso kukana kwabwino kwa cathodic stripping performance.3LPP kusinthidwa ndi ❖ kuyanika kapangidwe, ntchito kutentha pamwamba 110℃, kukana kwake kwabwino kwa dzimbiri ndi kutentha kwakukulu kuti mupambane msika wotakata, kutentha kwapamwamba sikumapanga zofooka zina, kukwaniritsa kutentha kwakukulu ndikuyang'ana ntchito zamadzi akuya, zikutuluka zokutira zapamwamba kwambiri zotsutsana ndi dzimbiri. padziko lonse lapansi.