Description

TL;DR

The EMT bare foam pig is a plain polyurethane pipeline tool with no abrasive coating. It displaces products, removes free water, and pushes loose debris. It fits 2 to 48 inch lines and bends down to 1.5D. NACE-compliant materials are available.

Product Introduction

The bare foam pig is a plain pipeline cleaning tool from EMT for oil, gas, and water lines that need gentle displacement instead of scrubbing. It drives product batches forward, clears free water after hydrotest, and sweeps loose debris without touching the wall.

Key points:
– Plain polyurethane body — No strips or grit, so it never scores the pipe interior
– Maximum flexibility — Compresses through 1.5D bends and reduced-bore valves without sticking
– Low drive pressure — Moves on just 1-3 bar in gas, liquid, or dual-phase flow

A bare foam pig trades scrubbing power for gentleness. It is the right choice when the line is clean or when you must avoid any wall contact.

What Problem Does a Bare Foam Pig Solve?

When a line holds mixed products or standing water, an operator needs movement without abrasion. A rigid or gritted pig can mark the wall or stall in a tight bend.

Q: Why pick a bare foam pig over an abrasive pig?
A: The bare foam pig displaces batches and water with zero wall contact. It will not scratch coatings or lodge in sharp bends. Use it for dewatering, batch separation, and pre-cleaning before a harder pig follows.

Technical Parameters

EMT moulds each foam pig from high-resilience polyurethane with full material traceability. Standard and custom sizes ship on request.

Parameter	Specification
Available Sizes	2″-48″ (DN50-DN1200)
Body Material	Open-cell / closed-cell polyurethane foam
Surface	Plain (no abrasive strips)
Foam Density	30-150 kg/m³ (2-9 lb/ft³)
Temperature Range	-40°C to 100°C
Max Operating Pressure	≤ 10 MPa differential (typical)
Bypass	None (solid body) / optional bypass port
Compatibility	Gas, liquid, dual-phase service
Min. Bend Radius	1.5D
Design Standard	NACE SP0102 Pipeline Pigging Practice
Certifications	ISO 9001, EN 10204 3.1 material certificates

Product Advantages

• Zero wall contact — Plain foam displaces product without scoring coatings or liners
• Bend-friendly body — Compresses through 1.5D bends and reduced-bore valves without jamming
• Low drive demand — Runs on 1-3 bar, ideal for low-pressure dewatering
• Reusable design — Survives several passes in clean service for lower cost per run
• Safe first step — Prepares the line before a criss-cross or cup pig takes over

Where Is a Bare Foam Pig Used?

• Crude and product pipelines — Separate grades during batching runs
• Subsea tiebacks — Dewater flowlines before start-up
• Water injection lines — Sweep loose debris and free water
• Gas commissioning — Dry lines after hydrotest before gas introduction
• Refinery unit piping — Gentle short runs during turnarounds
• Petrochemical plants — Move interface batches during changeover

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.

Our rigorous and unwavering commitment to quality control over the years has made our pig indicators listed as the sole Chinese brand products in the optional products in multiple CNOOC projects. As early as 2010, we began providing products for oil projects in the Asia, Africa and Latin America region, with long-term and ongoing projects such as PDOC, DPOC, Hafaya, Misan, and Graf oil fields, and without receiving any negative quality feedback. At present, our products have also been recognized by companies such as CCED, Oxy, Saudi Aramco, and Shell, and have become members of the “Pigging Products and Services Association (PPSA)”, presenting yet another way for pipe project contractors to access affordable, top-tier products.

Frequently Asked Questions

Q: What is a bare foam pig used for?

A: A bare foam pig displaces product batches, removes free water, and pushes loose debris without wall contact. Its plain polyurethane body suits dewatering, batching, and pre-cleaning before a harder pig runs.

Q: How does a bare foam pig differ from a criss-cross foam pig?

A: A bare foam pig has a plain surface and only pushes material. A criss-cross foam pig adds diagonal abrasive strips that scrub soft scale. Choose the bare version when the line is clean or wall safety comes first.

Q: What sizes are available for the bare foam pig?

A: EMT supplies the bare foam pig from 2 to 48 inch (DN50-DN1200). Custom diameters, foam densities, and bypass options are available on request to fit your line profile.

Q: Can it pass tight pipeline bends?

A: Yes. The polyurethane body compresses through bends down to 1.5D radius and passes reduced-bore valves. Its softness avoids the jamming seen with rigid steel pigs.

Q: What certifications support the manufacturing quality?

A: EMT holds ASME U-Stamp and ISO 9001 certification and issues EN 10204 3.1 material certificates. Foam pigs follow NACE SP0102 pigging practice for material and process control.