Standard No.:	HG/T 3179-2023
English Name:	Urea high-pressure equipment surfacing process assessment and welder skill assessment
Chinese Name:	尿素高压设备堆焊工艺评定和焊工技能评定
Professional Classification:	HG    Professional Standard - Chemistry
Issued by:	MIIT
Issued on:	2023-12-29
Implemented on:	2024-7-1
Status:	valid
Superseding:	HG/T 3179-2002 Surfacing procedure qualification and welder performance qualification for high pressure urea equipment
Language:	English
File Format:	PDF
Word Count:	18500 words
Price(USD):	470.00
Delivery:	via email in 1~5 business day

本文件规定了尿素高压设备尿素级耐腐蚀超低碳铬镍钼（Cr-Ni-Mo）奥氏体不锈钢堆焊工艺评定和焊工技能评定的术语和定义、评定要求、试件及试样制备、检验、试验方法与结果评定、评定报告。
本文件适用于尿素装置中的高压汽提塔、全冷凝反应器或高压冷凝器、高压洗涤器的管板堆焊工艺评定和堆焊焊工技能评定。当上述设备和尿素合成塔的封头（含高压洗涤器球形管箱）采用堆焊衬里结构时，上述评定也适用于该部件的堆焊。