UPG supply independent weld testing for both pre-construction and construction test welds for both Electrofusion and Butt Fusion welds. These are carried out in a accredited laboratory and we supply you with the completed test certificates once test is completed.
Testing provided includes:
- Tensile Testing of butt welded joints to ISO 13953 – Polyethylene (PE) pipes and fittings – Determination of the tensile strength and failure mode
- Electrofusion joint Peel Decohesion testing to ISO 13954 – Peel decohesion test for electrofusion assemblies
Contact our technical team for more information and pricing.
Feel free to submit your test welds using the below link to the correct form.
Download PDF copies here or fill out below online form.
EF Weld Test – download PDF
Butt Weld Test – download PDF
You can deliver your test welds to either our Auckland or Wellington branches, or if you prefer we can arrange collection from your premises. Note that all welds should have 500mm leg on each side of weld.
FAQ:
Electrofusion Joint Peel Decohesion testing:
This test involves cutting a longitudinal piece of welded fitting and pipe and then mechanically peeling them apart. The acceptance criteria is defined in AS/NZS 4129 with subsequent references to ISO 13954 and ISO 13955. The peel decohesion requirement of AS/NZS 4129, specifies the percentage of brittle failure decohesion of less than 33.3% of the joint fusion length and must display a ductile mode of separation. More information can be found on PIPA website, specifically Industry Guideline document POP014 (see: https://pipa.com.au/technical/pop-guidelines)
Butt Fusion Tensile Testing:
These tests are carried out on weld specimens cut from the weld and tested in a laboratory or in the field. Generally these tests require the test specimen to fail in a ductile manner and hence the failure mode must be interpreted from the specimen. All test coupons must exceed 90% strength of parent pipe.
