GB/T 25151.3-2010
Fabrication and inspection method for high pressure urea equipment.Part 3:Intergranular corrosion tendency test for ultra low-carbon chromated nickel molybdenum austenitic stainless steel of urea grade (English Version)

Standard No.: GB/T 25151.3-2010
Language: Chinese, Available in English version
Release Date: 2010
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 25151.3-2010

Scope: This part of GB/T 25151 specifies the corrosion mass loss of urea super low-carbon chromium-nickel-molybdenum austenitic stainless steel in 65% boiling nitric acid solution as a test method for checking the tendency of intergranular corrosion. This part is applicable to investigate the influence of heat treatment and welding process on the corrosion resistance and to detect the corrosion resistance of the weld itself.

GB/T 25151.3-2010 Referenced Document

GB/T 25151.4 Fabrication and inspection method for high pressure urea equipment.Part 4:Intergranular corrosion tendency test specimen preparation for ultra low-carbon chromated nickel molybdenum austenitic stainless steel of urea grade
GB/T 626 Chemical reagent Nitric acid
HG/T 3178 Corrosion-resistant stainless steel pipe-tube sheet welding process assessment and welder skill assessment for urea high-pressure equipment*， 2023-12-20 Update
HG/T 3179 Urea high-pressure equipment surfacing process assessment and welder skill assessment*， 2023-12-20 Update
HG/T 3180 Welding process assessment and welder skill assessment of lining plates and internal parts of urea high-pressure equipment*， 2023-12-20 Update

2010 GB/T 25151.3-2010 Fabrication and inspection method for high pressure urea equipment.Part 3:Intergranular corrosion tendency test for ultra low-carbon chromated nickel molybdenum austenitic stainless steel of urea grade