Study of Verification and Validation of Standard Welding Procedure Specifications Guidelines for API 5L X-70 Grade Line Pipe Welding
Received Date: Oct 30, 2017 / Accepted Date: Nov 02, 2017 / Published Date: Nov 04, 2017
Verification and validation of welding procedure specifications for X-70 grade line pipe welding was performed as per clause 8.2, Annexure B and D of API 5L, 45th Edition to check weld integrity in its future application conditions. Hot rolled coils were imported from China, de-coiling, strip edge milling, three roller bending to from pipe, inside and outside submerged arc welding of pipe, online ultrasonic testing of weld, HAZ and pipe body, cutting at fixed random length of pipe, visual inspection of pipe, Fluoroscopic inspection of pipe, welding procedure qualification test pieces marking at weld portion of the pipe, tensile testing, guided bend testing, CVN Impact testing were performed. Detailed study was conducted to explore possible explanations and variation in mechanical properties, WPS is examined and qualified as per API 5L 45th Edition.
Keywords: Welding procedure specification; Welding procedure qualification record; Submerged arc welding; American petroleum institute; American society for testing materials; Tensile test; Guided bend test; Charpy V-notch impact test
Citation: Qazi HAA (2017) Study of Verification and Validation of Standard Welding Procedure Specifications Guidelines for API 5L X-70 Grade Line Pipe Welding. Oil Gas Res 3: 147. Doi: 10.4172/2151-6200.1000147
Copyright: © 2017 Qazi HAA. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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