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BEST SELLER

Inflatable
Pipe Stoppers

Designed for temporary blocking of pipelines during maintenance, repair, and testing. Available from 50mm to 2500mm diameter.

50 - 2500mm
Up to 1.5 BAR
Multi-Size
PRECISION TESTING

Inflatable
Test Plugs

Precision-engineered plugs for hydrostatic and pneumatic pipeline pressure testing. Trusted across 85+ countries.

Up to 2.5 BAR
Pneumatic
Hydrostatic
IN-HOUSE ENGINEERING

Mechanical
Pipe Plugs

In-house engineered steel and aluminium plugs for sealing, testing, and isolating pipelines — from small bore to DN 2000.

Steel & Aluminium
DN 15 - 2000
Custom Sizing
PIPELINE INTEGRITY

Joint
Testers

Test individual pipe joints for leaks and integrity. Essential for new pipeline installations and quality assurance protocols.

Joint Testing
Leak Detection
REHABILITATION

Repair
Packers

Trenchless point repair and rehabilitation of damaged pipelines. Fiberglass and resin-based packer systems for lasting results.

Trenchless
Fiberglass
Resin Cure
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85+Countries
75+Products
PIPE STOPPERS TEST PLUGS JOINT TESTERS PACKERS LIFTING BAGS ACCESSORIES PIPE STOPPERS TEST PLUGS JOINT TESTERS PACKERS LIFTING BAGS ACCESSORIES
Plugline Team
FIELD-PROVEN
Holds under pressure
ISO 9001
CERTIFIED
85+
COUNTRIES
ABOUT PLUGLINE

A Totalien Brand
Built for the Field

We design and manufacture pipe plugs, test plugs, joint testers, rehabilitation packers, and pipeline cleaning accessories. Every product is engineered for maximum safety and reliability in demanding field conditions.

ISO Certified
Quality management systems
Global Reach
Serving 85+ countries worldwide
Custom Engineering
Bespoke solutions for unique needs
Learn More
TOP SELLERS

Our Field-Proven Best Sellers

Real specifications from the equipment our customers order most.

Inflatable pipe stopper
BEST SELLER #1Pipe Stoppers

Inflatable Pipe Stoppers

1,5 – 2,5 bar
  • Size rangeDN20 – DN2800
  • Working pressure1,5 / 2,5 bar
  • Back pressure0,5 / 1 bar
  • MaterialNR + Kevlar®
  • Air connectionQuick coupling / Schrader
  • Working temp.-40 to 70 °C
Inflatable small pipe stopper
BEST SELLER #2Pipe Stoppers

Inflatable Small Pipe Stoppers

2,5 bar
  • Size range20 – 1000 mm
  • Working pressure2,5 bar
  • Back pressure1,0 bar
  • MaterialNR + Kevlar®
  • Air connectionQuick coupling / Schrader
  • Working temp.-40 to 70 °C
Inflatable gas balloon plug

Inflatable Gas Balloon Plugs

0,5 bar
  • Size range250 – 3000 mm
  • Working pressure0,5 bar
  • Back pressure0,2 / 0,3 bar
  • MaterialChemical-resistant rubber
  • Air connectionQuick coupling / Schrader
  • Working temp.-40 to 70 °C
Hydrostatic pipe joint tester
FIELD FAVORITEJoint Testers

Joint Testers

2,5 – 55 bar
  • Size range100 – 4000 mm
  • Working pressureUp to 55 bar (inflate)
  • Joint test pressureUp to 50 bar
  • MaterialNR + Kevlar®
  • Working temp.-40 to 70 °C
Multi size lateral repair packer
FIELD FAVORITERepair Packers

Multi Size Lateral Packers

1 – 3 bar
  • Size range25 – 600 mm
  • Working pressure1 – 3 bar
  • Length600 – 5000 mm
  • MaterialNR
  • Working temp.-40 to 70 °C
Steel test plug
FIELD FAVORITEMechanical Pipe Plugs

Steel Test Plugs

0,5 – 2,5 bar
  • Size range15 – 300 mm
  • Pressure0,5 – 2,5 bar
  • MaterialSteel (NR/SBR, CR, EPDM seal)
  • BypassWith bypass (M8 – 1″)
  • Working temp.-20 to +80 °C
EXPLODED VIEW · LOOP
TECHNICAL FILM — STEEL TEST PLUG
MODELSTP-150
NOMINALDN150
PARTS8 — CAD EXACT
0.0 BAR
WING NUTHand-tight compression drive
SEALING ELEMENT DN150Natural rubber · bubble-tight to 2,5 bar
COMPRESSION FLANGESt37 steel · zinc passivated
THROUGH-PIPE ½″Fill / vent connection
01
02
03
04
05
06
07
PARTS LIST — STP-150
01
SEALING ELEMENT DN150Natural rubber · bubble-tight to 2,5 bar
02
BODY · BOTTOM FLANGESt37 · welded through-pipe
03
COMPRESSION FLANGESt37 · zinc passivated
04
FLAT WASHER
05
WING NUTHand-tight drive
06
PROTECTION CAP
07
GASKET ½″Through-pipe seal
ST37 STEEL  ·  DN15 – DN300  ·  0,5 – 2,5 BAR
PLUGLINE

Steel Test Plug

Mechanical pipe plugs in steel or aluminium for high-strength applications. Diameters 6 mm to 300 mm, fully custom sizing on request.

Need a Custom Solution?

Our engineering team designs bespoke pipe stoppers and test plugs for your unique pipeline requirements.