GB/T 25151.2-2010
尿素高压设备制造检验方法 第2部分:尿素级超低碳铬镍钼奥氏体不锈钢选择性腐蚀检查和金相检查
Fabrication and inspection method for high pressure urea equipment.Part 2:Selective corrosion examination and metallography examination for ultra low-carbon chromated nickel molybdenum austenitic stainless steel of urea grade
GBT25151.2-2010, GB25151.2-2010