全焊接球阀非标准试验的分析

摘要

根据对国内外多个标准的研究和应用经验，论述了油气管线用高压大口径全焊接球阀的非标准试验项目和评定标准，以及焊缝免焊后热处理的安全评估。%Based on the research of many standards domestic ＆ abroad and the application experience, it is described the non-standard test and assessment standards of full welded ball valves for oil and gas pipeline, and safety assessment of welded joints without heat treatment after welding.