Steel Testing Plugs / Expanding Bungs

Horiaki India Private Limited is a trusted brand of Steel Testing Plugs in India. We offer premium quality Steel Testing Plugs that are manufactured using premium quality raw materials like Nylon, HDPE, MDPE, Aluminium, steel. We also offer steel test plug double seal, aluminium double seal test plug, multi-lock steel test plugs, End of pipe testing/sealing plugs

These are provided in sizes from 1.5″, for more strenuous effort oriented duties such as long immersion in water and higher temperature. The plugs are merely inserted into the pipe and the wings tightened to force the top and bottom plates together, thereby expanding the rubber ring to seal tightly in the pipe.

These are used for pressure testing and stopping all pipework from 1.5 inch (38 mm) upwards. They are manufactured with ½”, 1” and 2″ outlets as shown in the chart overleaf. The standard seals are made from natural rubber and special rubber seals are available for chemical applications where greater resistance is required. All plugs conform to British Standards BS 8005 for low pressure testing and sealing of pipes.

Technical information for Steel Test Plugs
Model Size (inches ) Expansion range (mm) Pressure (bar) Weight ( kgs )
STL01 1.5 38-50 1 to 3 0.25
STL02 2 49-60 1 to 3 0.25
STL03 2.5 62-75 2 0.3
STL04 3 73-85 1 0.3
STL05 3.5 84-95 1 0.3
STL06 4 94-110 1 0.3
STL07 6 146-163 0.6 0.6
STL08 7 170-195 0.3 1
STL09 8 192-212 0.3 1.4
STL10 9 216-235 0.3 2
STL11 10 244-260 0.3 2.2
STL12 12 275-305 0.3 3.5
STL13 14 340-375 0.3 4.3
STL14 15 365-400 0.3 4.5
STL15 16 390-425 0.3 6
STL16 18 440-475 0.3 7.4


Aluminium Pipe Plugs are suitable for low pressure testing or temporary closure and have traditionally been used for basic low pressure air or water testing of sewer or water pipes, maintenance in ground works and they are increasingly used for applications in the offshore industry.
Topside applications in the offshore industry include:

Temporary sealing gas of fuel pipes during hot work.

General maintenance.

Diving contractors finding subsea uses.

These combine with the traditional uses for domestic and industrial plumbing operations in blocking off water and drainage systems and testing during emergency problems or maintenance.
They are also used for ducting and conduits, swimming pools, masking in painting and casting industries, for leak testing, isolation, sealing, stopping and purging pipework. When transporting large vessels and tanks, such as heat exchangers, fractionation columns, shells for other petrochemical applications etc., Aluminium Plugs are used for sealing stubs and entries for interconnecting pipework so that the vessels can be sealed, with inert gas inside if necessary, to prevent oxidation or contamination during transportation.
In particular Aluminium Test Plugs are suitable for arduous duties such as immersion in chemicals and use at higher temperatures. For more complex applications, chemical and higher temperature resistant seals are available.

International Market

  • Saudi Arabia, Kuwait, Bahrain , Algeria, Kenya, Tunisia, Angola,Morocco, Senegal, Egypt,Nigeria, Uganda, Libya, Liberia, Swaziland , Switzerland,Vatican City, Iceland, Sweden, Russia, Germany, Poland, Austria, Romania, Spain, Portugal, Hungary, United Kingdom, Denmark,Norway, Netherlands, Italy, Greece etc

Indian Market

Jammu, Kota, Jalandhar, Jabalpur, Mumbai, Hyderabad, Bareilly, Varanasi, Kolhapur, Pune, Vadodara, Kanpur, Tiruchirappalli, Salem, Nashik, Jaipur, Kolkata, Surat, Delhi, Gorakhpur, Kozhikode, Aligarh, Amravati, Ghaziabad, Bhiwandi, Jamshedpur, Bengaluru, Aurangabad, Ahmedabad, Indore, Hubli Dhanbad, Thiruvanathpuram, Guntur,Guwahati,Patna, Nagpur, Warangal, Dhanbad, Faridabad, Belgaum, Dehradun, Madurai, Amritsar, Chennai, Chandigarh,Durg Bhilai, Meerut, Ludhina, Bhubaneswar, Asansol, Solapur, Agra, Rajkot, Coimbatore, Pondicherry, Bikaner, Bhopal, Moradabad, Vijayawada, Mysore, Allahabad, Cuttack, Jamnagar, Vishapatnam, Ranchi, Srinagar, Tiruppur, Lucknow, Mangalore, Jodhpur, Kochi, Gwalior, Raipur.