Sep 17, 2025 Gadewch neges

Polypropylen 3-haen (3lpp) pibell llinell wedi'i gorchuddio

Gorchudd polypropylen 3-haen 3LPP drosAPI 5L PSL 1 a PSL 2 Pibellau llinelloddi wrth NPS 2 "i NPS 56"(60.3mm - 1422.4 mm),Croeso i gysylltu â ni os oes gennych RFQs o'r fath.

 

Cotio propylen poly (3lpp) tair haen 3lppGorchudd amlhaenog yw system cotio sy'n cynnwys tair cydran swyddogaethol: - ymasiad perfformiad - epocsi wedi'i bondio (fbe), ac yna glud copolymer a haen allanol o polypropylen dwysedd canolig) cyrydiad.

Y codau a'r safonau ar gyferGorchudd 3LPPydyDIN 30678, ISO 21809-1, NFA 49-711,PlisgetDEP 31.40.30.31-CSPC

 

DIN 30678-2013Haenau polypropylen ar bibellau dur a ffitiadau

ISO 21809-1: 2011Diwydiannau petroliwm a nwy naturiol-haenau allanol ar gyfer piblinellau claddedig neu danddwr a ddefnyddir mewn systemau cludo piblinellau-Rhan 1: haenau polyolefin (AG 3-haen a PP 3-haen)

NFA 49-711Gorchudd allanol gyda thair gorchudd haen polyproplene, cymhwysiad trwy allwthio

PlisgetDEP 31.40.30.31-CSPC Gorchudd polyethylen allanol a polypropylen ar gyfer pibell linell

 

Epocsi wedi'i bondio ymasiad (fbe): Bydd haen gyntaf FBE yn 150 micron o drwch.

Gludiog:Ail haen o ludiog polymer CO -, 200 micron o drwch.

Polypropylen (MDPP/HDPP):Trydedd haen o polypropylen allwthiol (MDPP/HDPP), 1.6 - 2.95 mm o drwch.

 

Cymhwyso cotio:

Paratoi arwyneb y bibell trwy lanhau tywod (Sspc - sp10/nace no.2/iso 8501-1 sa 2 1/2/sis 05 59 00)

Yn dilyn gwresogi pibellau, rhaid rhoi powdr epocsi ymasiad

Rhaid rhoi glud allwthiol dros y bibell.

Yn olaf, rhaid rhoi haen polypropylen allwthiol (MDPP neu HDPP) dros yr haen gludiog.

Mae cyfanswm trwch cotio yn gyffredinol <3.0 mm ar gyfer pibell dia <24 "a 3.3 mm ar gyfer pibell dia 32" ac uwch)

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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