The Technical Standards and Safety Authority (TSSA) adopts standards and administers the policies, procedures and processes for the certification of welders and brazers regulated under the Technical Standards and Safety Act, 2000’s Ontario Regulation 220/01: Boilers and Pressure Vessels (BPVs). Businesses that repair/alter BPVs and install/repair associated piping systems are required to hold a Certificate of Authorization (COA) from TSSA or another Canadian jurisdiction. Companies with a National Board Certificate of Authorization (“R” stamp) are also acceptable for repairs/alterations of BPVs.
In the following directory, you can find a listing of businesses that hold a COA issued by TSSA. Please note that the information in this directory is updated periodically and may not reflect the most recent information available for each entry. If you have a question or concern regarding any of the information contained on this page, please contact customerservices@tssa.org or call 1-877-682-TSSA (8772).
TRADE-MARK INDUSTRIAL INC.
- Address:
-
250 ROYAL OAK RD
CAMBRIDGE, ON
Canada
N3E 0A4 - Products/Services:
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Hot Tapping and Line Stopping (SHOP & FIELD)
Status: 01-13-2026
Number: QA-06021
Hot Tap and Line Stopping of pressure equipment at the above location and field sites controlled by the above location only in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code.
Boiler & Pressure Vessel Repair/Alteration (SHOP & FIELD)
Status: 01-13-2026
Number: QA-00902
Repair and alteration of boilers, pressure vessels, piping, and fittings at the above location and for repairs and alterations at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code.
Medical Gas Piping Installation CSA-Z7396.1 (SHOP & FIELD)
Status: 01-13-2026
Number: QA-04506
Fabrication, assembly, and repair of medical gas piping at the above location and fabrication, assembly, erection, and repair of medical gas piping at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and CSA-Z7396.1 Medical Gas Pipeline Systems.
Refrigeration Piping Installation ASME B31.5 (SHOP AND FIELD)
Status: 01-13-2026
Number: QA-04505
Fabrication, assembly, and repair of refrigeration piping at the above location and fabrication, assembly, erection, and repair of refrigeration piping at field sites controlled by the above location in accordance with CSA Standard B52, Mechanical Refrigeration Code and ASME B31.5 Refrigeration Piping.
Process Piping Installation ASME B31.3 (SHOP & FIELD)
Status: 01-13-2026
Number: QA-00901
Fabrication, assembly, and repair of process piping at the above location and fabrication, assembly, erection, and repair of process piping at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.3 Process Piping.
Power Piping Installation ASME B31.1 (SHOP & FIELD)
Status: 01-13-2026
Number: QA-00900
Fabrication, assembly, and repair of power piping at the above location and fabrication, assembly, erection, and repair of power piping at field sites controlled by the above location in accordance with CSA Standard B51, Boiler, Pressure Vessel and Pressure Piping Code and ASME B31.1 Power Piping.
CSA-B51 Fittings
Status: 01-13-2026
Number: QA-05024
Fabrication of Welded and Non-Welded Category A, B, & H type fittings at the above location only. In accordance with CSA Standard B51 Boiler, Pressure Vessel and Pressure Piping Code.
ASME PP-2-Section I Boiler External Piping (SHOP & FIELD)
Status: 01-13-2026
Number: QA-04954
Fabrication and assembly of boiler external piping at the above location and fabrication, assembly, and erection of boiler external piping at field sites controlled by the above location in accordance with ASME Boiler and Pressure Vessel Code, Section I, and CSA Standard B51, Boiler, Pressure Vessel, and Pressure Piping Code.
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