Sep 19, 2025 Pustite sporočilo

3-slojna polipropilen (3LPP) prevlečena linijska cev

Jeklena cev, prevlečena s 3LPE‌ ali ‌Tri - jeklena cev s polietilenom‌ je vrsta korozije - odporni cevovod, ki se pogosto uporablja v panogah, kot so nafta, zemeljski plin, kemični inženiring in oskrba z vodo.

 

Uporaba prevleke:

Površinska priprava cevi s čiščenjem peskanja (Sspc - sp10/NACE št.)

Po kasnejših cevnih ogrevalnih fuzijskih epoksi prahu se

Ekstrudirano lepilo se nanese nad cevjo.

Končno ekstrudiran polipropilen (MDPP ali HDPP) je treba uporabiti nad lepilnim slojem.

Skupna debelina prevleka je na splošno <3,0 mm za cev dia <24 "in 3,3 mm za cev Dia 32" in več)

 

Image result for Three Layer Poly Ethylene/ Propylene (3LPE/ 3LPP) coating 3LPE/ 3LPP coating system is a multilayer coating composed of three functional components: a high performance fusion bonded epoxy (FBE), followed by a copolymer adhesive and an outer layer of Medium Density Polyethylene (MDPE) or High Density Polyethylene (HDPE), which provides protection against external corrosion. The codes and standards for 3LPE are ISO 21809-1, DIN 30670 or CAN/CSA Z245.21. Fusion Bonded Epoxy (FBE): First layer of FBE shall be 150 microns thick. Adhesive: Second layer of extruded co-polymer adhesive, 200 microns thick. Polyethylene (MDPE/HDPE): Third layer of extruded polyethylene (MDPE/HDPE) or polypropylene (MDPP/HDPP), 1.6 – 2.95 mm thick. Application of Coating: Surface preparation of pipe by blast cleaning, subsequent to pipe heating fusion epoxy powder shall be applied and after that extruded adhesive shall be applied over the pipe. Finally extruded polyethylene (MDPE or HDPE) layer shall be applied over the adhesive layer. Total coating thickness is generally < 3.0 mm for pipe dia < 24

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