Description
The EMT poly coated foam pig is a reusable polyurethane pipeline tool that scrubs wax, scale, and sludge while staying flexible through tight bends. Its full PU elastomer coat resists abrasion for long-distance runs. NACE SP0102 and ISO 9001 compliant.
Introduction
It is a reusable pipeline cleaning tool from EMT built for oil, gas, and water lines that need repeated scrubbing rather than a one-pass sweep. It removes wax, scale, and sludge, and dewaters lines during commissioning and batch changeover. A flexible polyurethane foam core carries a full-layer PU elastomer coat over the body.
Key points:
– Full PU elastomer coat — A solid poly surface resists wall abrasion far longer than bare foam
– Repeated-run durability — Rated for 50% wall compression and 50,000 flex cycles
– Flexible travel — Compresses through 1.5D bends and reduced-bore valves without lodging
Unlike a bare foam pig that only sweeps liquid ahead, the poly coated foam pig scrapes the wall on every pass, so it cleans long lines in fewer launches.
Foam Pig Solution
After construction or a wax build-up, a line can carry sludge and scale that a smooth pig only relocates instead of removing, leaving the wall rough for the next batch.
Q: When should I choose a poly coated foam pig over a bare foam pig?
A: Choose it when the line needs scrubbing, not just displacement. Its PU elastomer coat scrapes wax and scale off the wall while the foam core bends through obstructions, so one launch does the work of several bare passes.
Technical Parameters
EMT moulds each poly coated foam pig from open-cell polyurethane foam with a full PU elastomer surface coat and full material traceability. Standard and custom sizes ship on request.
| Parameter | Specification |
|---|---|
| Available Sizes | 2″-48″ (DN50-DN1200) |
| Body Material | Open-cell polyurethane foam core |
| Coating | Full-layer polyurethane (PU) elastomer |
| Foam Density | 35-220 kg/m³ (2-14 lb/ft³) |
| Wall Compression | Up to 50% |
| Max Operating Pressure | 7 MPa (1,015 psi) differential |
| Min. Bend Radius | 1.5D |
| Flex Life | 50,000 cycles |
| Wear Rate | ~2 mm per 100 km |
| Operating Distance | 100-300 km per run |
| Temperature Range | -30°C to 100°C |
| Direction | Bi-directional |
| Design Standard | NACE SP0102 Pipeline Pigging Practice |
| Certifications | ISO 9001, EN 10204 3.1 material certificates |
See also: NACE SP0102 Pipeline Pigging Practice
Product Advantages
- Abrasion resistance — Full PU coat outlasts bare foam in rough, scaled lines
- Fewer launches — Scrapes wall deposits each pass, cutting repeat runs
- Long-distance ready — Rated 100-300 km with ~2 mm wear per 100 km
- Bend-friendly body — Compresses 50% and passes 1.5D bends without jamming
- Reusable design — 50,000 flex cycles support repeated maintenance pigging
Industry
- Crude oil trunk lines — Scrape wax during routine maintenance pigging
- Gas transmission lines — Remove water and residue before commissioning
- Multi-diameter pipelines — Conform through size changes and elbows
- Refinery process lines — Clear sludge and soft scale in turnaround
- Water and slurry lines — Sweep debris without scratching the wall
- Pre-inspection cleaning — Prepare the line for smart ILI tools
About EMT
EMT is a Shenyang manufacturer of oil and gas pipeline accessories with more than 25 years of engineering experience in the energy sector.
Capabilities:
– 5-axis CNC machining and a 10,000 psi (69 MPa) pressure test bay
– ASME Section IX welding plus NDT (UT, PT, RT, MT)
– Monthly output of 500+ closures and 1,000+ injection quills; pigs built to order
– Engineering support in 4 languages: English, Arabic, Spanish, Chinese
Certifications: ASME U-Stamp, ISO 9001 quality system, NACE MR0175 / ISO 15156 sour service compliance, EN 10204 3.1 mill certificates.
Service: Ships to 30+ countries with standard lead time 4-6 weeks and custom orders 6-10 weeks. Field service engineers give installation guidance on request.
FAQ
Q: What is a poly coated foam pig used for?
A: A poly coated foam pig scrubs wax, scale, and sludge from oil, gas, and water pipelines during routine maintenance and commissioning. Its PU elastomer coat removes wall deposits that a bare foam pig would only push ahead.
Q: How does a poly coated foam pig differ from a bare foam pig?
A: A bare foam pig only displaces liquid and light debris. A poly coated foam pig adds a solid PU surface coat that scrapes the wall, so it cleans scaled or waxy lines in fewer passes and lasts through many more runs.
Q: What sizes are available for the poly coated foam pig?
A: EMT supplies the poly coated foam pig from 2 to 48 inch (DN50-DN1200). Foam density, coat thickness, and body length are customized to your line diameter and deposit load on request.
Q: Can the poly coated foam pig pass tight pipeline bends?
A: Yes. The foam core compresses up to 50% and passes bends down to 1.5D radius plus reduced-bore valves. Its softness avoids the jamming seen with rigid steel pigs on long runs.
Q: Is the poly coated foam pig reusable?
A: Yes. It is rated for 50% wall compression and 50,000 flex cycles, with a wear rate near 2 mm per 100 km. Operators reuse it across many maintenance runs before replacement.
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