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Burst Test: The Big Bang!

before the burst test

Recently we had the chance again to perform a so-called burst test. For this test a pipe sample is closed at the ends, filled with water and then subjected to a very high pressure. Depending on the design of the pipe wall thickness the test may end with a big bang!

This time our test sample was a special kind of pipe. We tested the patented ip tubes of the company La Mont GmbH. These pipes are used especially for heat exchangers. Due to the special surface structure they offer an increased heat transfer while achieving the same material stability as smooth-bore tubes.

after the burst test

This material stability was successfully proven by our burst test. At ca. 500 bar – as calculated beforehand – the tube gave in with a bang. The resulting crack was located between the welding seam and the structured surface area.

If you need a qualified business partner for your burst test: We look forward to hearing from you!

Your Dosch Team

The new PED 2014/68/EU

Manometer Detail

The new internationalized version of the Pressure Equipment Directive PED 2014/68/EU came into effect on the 27th of June, 2014. On the 19th of July, 2016 the granted transition period will expire.

For you as our customer the new Directive introduces only little changes to existing requirements. The former certificates stay valid. Additionally, there were small adjustments to the specific scopes and conformity assessment.

The following table presents some changes you will encounter with our products:

old namenew name
PED 97/23/ECPED 2014/68/EU
Module B: EC-Type ExaminationModule B: EU-Type Examination (Production Type)
Module B1: EC-Design ExaminationModule B: EU-Type Examination (Design Type)
Article 3.3: good engineering practiceArticle 4.3: sound engineering practice

We adapted our documentation and conformity assessment to the new Directive. We will continue to assist you with the Pressure Equipment Directive and the respective standards.

Your Dosch Team

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