Coated Pipe
3PE Coated Steel Pipe
Three-layer PE (3PE/3LPE) coated steel pipe to DIN 30670, ISO 21809-1 and SY/T 0413 - total coating 1.8-4.7 mm over FBE epoxy, adhesive and polyethylene, for buried oil, gas and water pipelines.
Specifications
- Base Pipe
- Carbon steel A53 B, A106 B/C, A333; API 5L B-X80 PSL1/2; alloy A335 P5-P91; stainless A312/A269; nickel B161/B622/B444
- Coating Thickness
- 1.8 - 4.7 mm total by class A/B/C and level 1-3
- Layer Structure
- FBE epoxy >=80 um; adhesive 170-250 um; polyethylene 1.8 - 3.7 mm
- Standards
- DIN 30670/30671/30678, ISO 21809-1:2011, SY/T 0413-2002, CAN/CSA Z245.21, NFA 49-710, Shell DEP 31.40.30.31
- Internal Coating
- FBE anti-corrosion layer >350-450 um by DN; cement mortar lining per AWWA C104/A21.4
- Variants
- 2PE, PP coated
Three-Layer Structure
Layer one is fusion-bonded epoxy at 80 um minimum, layer two an adhesive of 170-250 um, layer three polyethylene of 1.8-3.7 mm. Minimum finished coating runs from 2.5 mm at OD <=273.1 mm to 3.3 mm above 813 mm; on SAW pipes the seam area may be reduced by up to 10%.
Standards
DIN 30670/30671/30678, ISO 21809-1:2011, SY/T 0413-2002, CAN/CSA Z245.21, NFA 49-710 and Shell DEP 31.40.30.31 govern the system; water service can add internal cement-mortar lining to AWWA C104/A21.4.
Buried Pipeline Service
Natural gas and petroleum transmission, water and sewage systems, and buried or underwater pipelines within the ISO 21809 scope.