Pipe Welding

Welding of pipes is commonplace. Pipes are used for transporting oil, water, gas, etc. The pressure inside the pipe may range from a vacuum pressure to gage pressure running into several hundreds of pounds per square inch. For such joints, mechanical joints such as rivets, threaded joints, etc. are not adequate for the purpose, hence … Read more

Practice Case 7 – Procedure Qualification On A Pipe

This article explores a few aspects around the concept of welding procedure qualification on a pipe test coupon. Is the full circumference of pipe necessary for qualifying the procedure? Does the answer change if we are talking about a welding performance qualification? Consider the following question asked in Interpretation IX-19-11. “Question: A groove weld procedure … Read more