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1. Submission of welding procedures to CWB
   
   1. All welding procedures shall be sent at procedures@cwbgroup.org
   2. You will get a reply confirming the reception of your email by CWB
   3. All welding procedures should be submitted in PDF and not secured
2. Response from CWB
   
   1. A review letter will be sent when the review will be completed
   2. There are three possible outcomes:
      
      1. Welding procedures have been accepted
      2. Welding procedures requires qualification
      3. Welding procedures requires revision
   3. Turnaround time ….. is three working days
3. PQR reviews
1. When PQR results are completed, a review letter confirming the test results will be sent
2. Corresponding welding procedures will then have to be revised as per the PQR and returned to the procedure department for final review/acceptance

The following are CWB commentaries on welding procedure acceptance to CSA W186

Qualification of welding procedures to CSA W186 for reinforcing bars

The qualification of WPDS under CSA W186 is drastically different from the other CSA welding standards.Ìý CSA W186 deals with welding of reinforcing bars using three types of welded connections, direct butt joints, indirect butt-splices (flare bevel or flare-V) and T-Joints (fillet weld). below you will find the type of procedure qualification tests for each type of connections:

• Direct butt joints: As per clause 8.3.4 and shown in figure 2 of CSA W186-90, the largest and smallest bar diameter shall be tested (2 tests).Ìý Each specimen shall be subject to tensile test and shall demonstrate at least 1.25 times the specified yield strength based on the nominal bar area.Ìý For direct butt joints the tests are straight forward without ambiguity.
• Indirect butt-splices: As per clause 8.3.5 of CSA W186-90, two specimens are required as shown in figure 14 of CSA W186-90, one for the largest and one for the smallest bar diameter. Each specimen shall be subject to tensile test and shall demonstrate at least 1.25 times the specified yield strength based on the nominal bar area.Ìý For indirect butt-splices, the tests are not obvious and can lead to misunderstanding of figure 14.Ìý There are two important things to understand in figure 14, first, the middle bar is not a continuous bar, but rather two bars spaced by a gap of 2mm, and secondly the weld length is critical and must be established using the formulas in the note of figure 14 on the second page of the figure.Ìý If the weld length is longer than required, the test will not be valid and if the weld length is not long enough, then the weld could break prematurely, and the test will fail.Ìý The weld length is always specified in our testing letter.
• T-joints (fillet weld): As per clause 8.3.6 and shown in figure 6 of CSA W186-90, the largest and smallest bar diameter shall be tested (2 tests).Ìý Each specimen shall be subject to four macro-etch, in order to be considered acceptable the weld shall meet the requirements of clause 7.5 of CSA W186-90.

Additionally, the essential variables described in clause 8.3.3 of CSA W186-90 requires that each position shall be qualified independently.Ìý This is different from other CSA welding standards where most of the time the flat position is qualified by any other position.

Description and commentaries on CWB welding consumables certification

List of certified welding consumables on CWB website

Use of certified welding consumables by CSA W47.1, CSA W47.2 and CSA W186 certified companies constitutes a mandatory requirement which is observed and monitored by CWB -ÌýCWB certified welding consumables. There are over 2,750 CWB certified welding consumables, to narrow search results, any of the following fields can be used:

• Manufacture, Distributor or Supplier Name: The name of the company producing or reselling the certified welding consumable
• Type: Type of the welding consumable (i.e.: SMAW Carbon Steel)
• Class: The classification of the welding consumable (i.e.: E4918-1-H8)
• Standard: The standard to which the welding consumable is certified to (i.e.: W48-18 (SMAW Carbon Steel)
• Point of Manufacture: The country where the welding consumable is manufactured
• Electrode designation: The trade name of the welding consumable
• Flux Gas: If applicable the name of the flux (SAW) or shielding gas for which the welding consumable is certified to be used with

For the user convenience the list is downloadable, however it could change the content by being updated at any time. Classifications for FCAW and MCAW processes are listed to include the new open classifications in metric, in accordance with AWS A5.36M followed by the equivalent classifications as per CSA W48-06, in brackets. The reason that the old classifications are still shown in brackets on the CWB site is to facilitate for users the transition towards the new open classifications as described in AWS A5.36M and adopted by CSA W48-18. As of June 1st, 2020 all new WPS’s and WPDS’s submitted must include the new classifications. Welding consumables are currently required to use the new classifications. With some exemptions where manufacturers use retained classifications, most manufacturers opted to use the new open classifications where multiple designators give a better clarity of weld deposit properties.

Changes to CSA Standard W48 - 2018