• Din 30670 yellow jacket coatingyellow 3lpe coating for steel pipes

The yellow jacket coating is a kind of yellow 3PE coating,which is mainly used for polyurethane thermal insulation steel pipes and other line pipes. The yellow jacket coating is a kind of anti-corrosion coating, which is electrostatic spraying epoxy powder on the surface of steel pipe and winding adhesive laterally, and winding yellow polyethylene laterally. Combined with the three excellent properties, the overall quality of the yellow jacket anti-corrosion pipe is significantly improved. It is resistant to chemical corrosion, cathodic stripping and mechanical damage. IMRI will customize the steel pipe coating to meet the needs of your project.

Specifications:

Standard DIN30670
Processing ability OD:38mm-1620mm;WT:2mm-30mm
Length 6-14m
Packing PE/BE,Plastic cap,bundling
Technique External surface on welded pipe or seamless pipe
Application Oil and Gas field,chemical engineering,energy engineering,water Transportation…
Service condition -40℃,+85℃;alkaline or sour;underground
Place of Origin China
MOQ 3 pices
Transportation 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port
→America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea,
Australia…(shipping)

2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”)
Khorgos port(Пограничный пункт “Хоргос”)→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)

Type of DIN30670 yellow 3LPE/3PE coating
Type N S
Design temperatures for
sintered polyethylene
coatings
from −20 °C up to +50 °C from −40 °C up to +70 °C
Design temperatures for
extruded polyethylene
coatings
from −20 °C up to +60 °C from −40 °C up to +80 °C
Coating thickness of  yellow 3LPE
Nominal size DN normal (n) increased (v)
DN≤  100 1,8 2,5
100< DN≤  250 2,0 2,7
250 < DN< 500 2,2 2,9
500 ≤ DN <800 2,5 3,2
DN ≥800 3,0 3,7
DIN30670 yellow 3LPE/3PE Coating Performance
Property Requirement Testing as in Notes
Degree of cure of epoxy resin ΔTg according to the manufacturer’s specification Annex B
Cathodic disbondment (CD test) 23 °C/28 d or 60 °C/2 d max. 7 mm Annex C Applies only to three  layer coatings
Peel strengthb Type N:
100 N/cm (23 °C)
20 N/cm (50 °C)
Type S:
150 N/cm (23 °C)
30 N/cm (70 °C)
Annex D For system testing single values shall be no more than 25 % lower than the required average value.
Continuity (holiday detection) No discharges Annex E 25 kV test
Elongation at break (23 °C ± 2 °C) min. 400 % Annex F
Impact resistance (23 °C ± 2 °C) Type N: ≥ 5 J/mm
Type S: ≥ 7 J/mm
Annex H 25 kV test No discharges
Low temperature impact resistance Type N:
≥ 5 J/mm (−20 °C ± 2 °C)
Type S:
≥ 7 J/mm (−40 °C ± 2 °C)
Annex H 25 kV test No discharges
Indentation resistance Type N:
max. 0,2 mm (23 °C)
max. 0,3 mm (50 °C)
Type S:
max. 0,2 mm (23 °C)
max. 0,4 mm (70 °C)
Annex I
Specific electrical coating resistance (23 °C ± 2 °C) ≥ 108Ωm² Annex J
UV resistance ΔMFR ± 35 % Annex K
Thermal ageing resistance ΔMFR ± 35 % Annex L
                                                                                                 3PE coating production process

3LPE/3PE/ three layer polyethylene coating for steel pipe line

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