This standard specifies the size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, marks, packaging and quality certificates of seamless steel pipes for high-pressure feed water heaters. This standard applies to straight pipes and U-shaped seamless steel pipes for high-pressure feed water heaters.
GB/T 24591-2009 Referenced Document
GB/T 2 Fasteners.Ends of parts with external thread*, 2016-02-24 Update
GB/T 222-2006 Permissible tolerances for chemical composition of steel products
GB/T 223.12-1991 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
GB/T 223.14-2000 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
GB/T 223.18-1994 Methods for chemical analysis of iron steel and alloy.The sodium thiosulfate separation iodimetric method for the determination of cupper content
GB/T 223.19-1989 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 223.23-2008 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
GB/T 223.26-2008 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
GB/T 223.3-1988 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.5-2008 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
GB/T 223.59-2008 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
GB/T 223.62-1988 Methods for chemical analysis of iron, steel and alloy--The butyl acetate extraction photometric method for the determination of phosphorus content
GB/T 223.63-1988 Methods for chemical analysis of iron, steel and alloy--The sodium(potassium)periodate photometric method for the determination of manganese content
GB/T 223.68-1997 Methods for chemical analysis of iron, steel and alloy. The potassium iodate titration method after combustion in the pipe furnace for the determination of sulfur content
GB/T 223.69-2008 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace
GB/T 223.9-2008 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
GB/T 24591-2009 history
2019GB/T 24591-2019 Seamless steel tubes for high pressure feedwater heater
2009GB/T 24591-2009 Seamless steel tubes for high pressure feedwater heater