Welding Standards for Procedure Qualification
The principal of European Standards for BS EN ISO 15614 specification and qualification of welding procedure for metallic materials – welding procedure test. Part 1: Arc & gas welding of…
Classification of Weld Joints
Classification of weld joints: Homogenous joint: – Parent metal and weld metal have no significant different mechanical properties and chemical composition. Heterogenous joint: -Parent metal and weld metal have significant…
Steel Classifications
Steel Classifications: Carbon steels is divided into 2 parts, namely 1. Plain Carbon Steel a. Low Carbon (0.01 – 0.3 Carbon) b. Medium Carbon (0.3 – 0.6 Carbon) c. High…
Four Factors Involved in Hydrogen Cracking
There are four factors involved in hydrogen cracking. Avoid one factor and hydrogen cracking will not occur. Factors. 1. hydrogen > 15 ml hydrogen per 100 mg weld metal 2.…
Abbreviations Related Weld Procedure
WPS welding procedure specification – an approved and accepted welding procedure; an authorised document. PQR procedure qualification records – proof…
Typical Codes of Practice and Standards Cover Various Types of Constructions Fabricated by Welding.
Below are listed some typical codes of practice and standards which cover various types of constructions fabricated by welding. Code Class of Work…
Welding Imperfection
Welding Imperfection Welding imperfection are discontinuities caused by the process of welding, it can be said to be discontinuous if it falls outside the level of acceptance and it should…
