This standard specifies the technical requirements for ordering content, materials, manufacturing, heat treatment, inspection and testing, welding repair, surface protection and packaging, and product quality certificates of steel butt-welding pipe fittings (hereinafter referred to as pipe fittings). This standard applies to pipe fittings specified in GB/T 12459. Other pipe fittings can also be used as a reference.
GB/T 13401-2017 Referenced Document
GB 150.4-2011 Pressure vessels.Part 4:Fabrication,inspection and testing,and acceptance
GB/T 10561 Standard grading chart microscopic examination method for determination of non-metallic inclusion content in steel*, 2023-05-23 Update
GB/T 222 Permissible tolerances for chemical composition of steel products
GB/T 223.1 Determination of carbon content in iron,steel and alloy
GB/T 223.10 Methods for chemical analysis of iron,steel and alloy The cupferron separation-chrome azurol S photometric method for the determination of aluminium content
GB/T 223.11 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration
GB/T 223.12 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 223.13 Methods for chemical analysis of iron,steel and alloy The ammonium ferrous sulfate titration method for the determination of vanadium content
GB/T 223.14 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 223.15 Chemical analysis of iron,steel and alloy--The determination of titanium by gravimetric method
GB/T 223.16 Methods for chemical analysis of iron,steel and alloy--The chromotropic acid photometric method for the determination of titanium content
GB/T 223.17 Methods for chemical analysis of iron,steel and alloy--The diantipyrylmethane photometric method for the determination of titanium content
GB/T 223.18 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 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content
GB/T 223.20 Methods for chemical analysis of iron steel and alloy.The Potentiometric titration method for the determination of cobalt content
GB/T 223.21 Methods for chemical analysis of iron steel and alloy.The 5-CL-PADAB spectrophotometric method for the determination of cobalt content
GB/T 223.22 Methods for chemical analysis of iron ,steel and alloy.The nitroso-R-salt spectrophotometric method for the determination of cobalt content
GB/T 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
GB/T 223.24 Methods for chemical analysis of iron, steel and alloy.The extraction seperation--The dimethylglyoxime spectrophotometric method for the determination of nickel content
GB/T 223.25 Methods for chemical analysis of iron, steel and alloy.The dimethylglyoxime gravimetric method for the determination of nickel content
GB/T 223.26 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
GB/T 223.27 Methods for chemical analysis of iron, steel and alloy.The thiocyanate-butyl acetate extraction spectrophotometric method for the determination of molybdenum content
GB/T 223.28 Methods for chemical analysis of iron,steel and alloy--The α-benzoinoxime gravimetric method for the determination of molybdenum content
GB/T 223.29 Iron,steel and alloy.Determination of lead content.Carrier precipitation-xylenol orange spectrophotometric method
GB/T 223.3 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
GB/T 223.30 Methods for chemical analysis of iron,steel and alloy. The arsenazo Ⅲ spectrophotometric method for the determination of zirconium content after separation by p-bromomandelic acid
GB/T 223.31 Iron,steel and alloy.Determination of arsenic content.Distillation-molybdenum blue spectrophotometric method
GB/T 223.32 Methods for chemical analysis of iron,steel and alloy. The hypophosphite reduction-iodimetric method for the determination of arsenic content
GB/T 223.33 Methods for chemical analysis of iron,steel and alloy. The chlorophosphonazo mA photometric method for the determination of cerium content after extraction separation
GB/T 223.34 Methods for chemical analysis of iron,steel and alloy-The determination of hydrochloric acid-insoluble content of iron powders
GB/T 223.35 Methods for chemical analysis of iron,steel and alloy--The pulse heating inert gas fusion-coulometric titration method for the determination of oxygen content
GB/T 223.36 Methods for chemical analysis of iron, steel and alloy. The neutral titration method for the determinaion of nitrogen content after distillation separation
GB/T 223.37 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation*, 2020-06-02 Update
GB/T 223.38 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-gravimetric method for the determination of niobium content
GB/T 223.39 Methods for chemical analysis iron,steel and alloy. The sulphochlorophenol S photometric method for the determination of niobium content
GB/T 223.4 Alloyed steel.Determination of manganese content.Potentiometric or visual titration method
GB/T 223.40 Iron, steel and alloy Determination of niobium content by the sulphochlorophenol S spectrophotometric method
GB/T 223.41 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-pyrogallol photometric method for the determination of tantalum content
GB/T 223.42 Methods for chemical analysis of iron,steel and alloy--The anion-exchange separation-bromopyrogallol red photometric method for the determination of tantalum content
GB/T 223.43 Iron,steel and alloy.Determination of tungsten content.Gravimetric method and spectrophotometric method
GB/T 223.45 Methods for chemical analysis of iron,steel and alloy. The cupral Separation-xylidyl blue Ⅱphotometric method for the determination of magnesium content
GB/T 223.46 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrometric method for the determination of magnesium content
GB/T 223.47 Methods for chemical analysis of iron,steel and alloy. The carrier precipitation-molybdenum blue potometric method for the determination of antimony content
GB/T 223.48 Methods for chemical analysis of iron,steel and alloy--The semixylenol orange photometric method for the determination of bismuth content
GB/T 223.49 Methods for chemical analysis of iron,steel and alloy. Extraction separation-chlorophosphonazo mA spectrophotometric method for the determination of the total rare tarth content
GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
GB/T 223.50 Methods for chemical analysis of iron, steel and alloy. The phenylfluorone-CTMAB direct photometric method for the determination of tin content
GB/T 223.51 Methods for chemical analysis of iron,steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content
GB/T 223.52 Methods for chemical analysis of iron,steel and alloy--The hydroxylamine hydrochloride-iodometric method for the determination of selenium content
GB/T 223.53 Methods for chemical analysis of iron,steel and alloy--The flame atomic absorption spectrophotometric method for the determination of copper content
GB/T 223.54 Iron, steel and alloy—Determination of nickel content—Flame atomic absorption spectrometric method*, 2022-07-11 Update
GB/T 223.55 Iron, steel and alloy. Determination of tellurium content. Oscillo-polarographic method
GB/T 223.56 Methods for chemical analysis of iron,steel and alloy--The sulfhydryl cotton fiber separation-oscillopolarographic method for the determination of tellurium content
GB/T 223.57 Methods for chemical analysis of iron,steel and alloy--The extraction-absorption catalytic polarographic method for the determination of cadmium content
GB/T 223.58 Methods for chemical analysis of iron,steel and alloy--The sodium arsenite-sodium nitrite titrimetric method for the determination of manganese content
GB/T 223.59 Iron,steel and alloy.Determination of phosphorus content.Bismuth phosphomolybdate blue spectrophotometic method and antimony phosphomolybdate blue spectruophotometric method
GB/T 223.6 Methods for chemical analysis of iron,steel and alloy. The neutralization titrimetric method for the determination of boron content
GB/T 223.60 Methods for chemical analysis of iron, steel and alloy--The perchloric acid dehydration gravimetric method for the determination of silicon content
GB/T 223.61 Methods for chemical analysis of iron, steel and alloy--The ammonium phosphomolybdate volumetric method for the determination of phosphorus content
GB/T 223.62 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 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method*, 2022-07-11 Update
GB/T 223.64 Iron,steel and alloy.Determination of manganese content.Flame atomic absorption spectrometric method
GB/T 223.65 Steel, iron and alloy.Determination of cobalt content.Flame atomic absorption spectrometric method
GB/T 223.66 Methods for chemical analysis of iron,steel and alloy--The thiocyanate-chlorpromazine hydrochloride-chloroform extraction photometric method for the determination of tungsten content
GB/T 223.67 Iron,steel and alloy.Determination of sulfur content.Methylene blue spectrophotometric method
GB/T 223.68 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 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace
GB/T 223.7 Iron powder--Determination of iron content--Potassium dichromate titration method
GB/T 223.70 Iron,steel and alloy.Determination of iron contents. o-Phenanthroline spectrophotometric method
GB/T 223.71 Methods for chemical analysis of iron, steel and alloy. The gravimetric method after combustion in the pipe furnace for the determination of carbon content
GB/T 223.72 Iron,steel and alloy.Determination of sulfur content.Gravimetric method
GB/T 223.73 Iron,steel and alloy.Determination of iron contents. Titanium trichloride-potassium dichromate titration method
GB/T 223.74 Methods for chemical analysis of iron, steel and alloy. The combustion gravimetric/gas-volumetric method for the determination of combined carbon content
GB/T 223.75 Iron,steel and alloy.Determination of boron content. Methanol distillation-curcumin photometric method
GB/T 223.76 Methods for chemical analysis iron,steel and alloy.The flame atomic absorption spertrometric method for the determination of vanadium content
GB/T 223.77 Methods for chemical analysis iron,steel and alloy.The flame atomic absorption spertrometric method for the determination of calcium content
GB/T 223.78 Methods for chemical analysis of iron,steel and alloy-Curcumin spectrophotometric method for the determination of boron content
GB/T 223.79 Iron and steel-Determination of multi-element contents-X-ray fluorescence spectrometry (Routine method)
GB/T 223.8 Methods for chemical analysis of iron,steel and alloy The sodium fluoride separation-EDTA titration method for the determination of aluminium content
GB/T 223.80 Iron,steel and alloy-Determination of trace bismuth and arsenic contents- Hydride generation-atomic fluorescence spectrometric method
GB/T 223.81 Iron,steel and alloy-Determination of total aluminum and total aluminum and total boron contents-Microwave digestion-inductively coupled plasma mass spectrometric method
GB/T 223.82 Steel and iron.Determination of hydrogen content.Thermal conductivity/infrared method after fusion under inert gas*, 2018-05-14 Update
GB/T 223.83 Steel and iron.Determination of high sulfur content.Infrared absorption method after combustion in an induction furnace
GB/T 223.84 Steel and iron.Determination of titanium content.Diantipyrylmethane spectrophotometric method
GB/T 223.85 Steel and iron.Determination of sulfur content.Infrared absorption method after combustion in an induction furnace
GB/T 223.86 Steel and iron.Determination of total carbon content.Infrared absorption method after combustion in an induction furnace
GB/T 223.87 Iron, steel and alloy.Determination of calcium and magnesium.Inductively coupled plasma mass spectrometric method*, 2018-05-14 Update
GB/T 223.88 Iron, steel and alloy—Determination of calcium and magnesium contents—Inductively coupled plasma atomic emission spectrometric method*, 2019-06-04 Update
GB/T 223.89 Iron, steel and alloy—Determination of tellurium content—Hydride generation-atomic fluorescence spectrometric method*, 2019-08-30 Update
GB/T 223.9 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
GB/T 223.90 Iron, steel and alloy—Determination of silicon content—Inductively coupled plasma atomic emission spectrometric method*, 2021-08-20 Update
GB/T 223.91 Iron, steel and alloy—Determination of copper—2,2’-Biquinoline spectrophotometric method*, 2021-08-20 Update
GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*, 2021-12-31 Update
GB/T 229 Metallic materials—Charpy pendulum impact test method*, 2020-09-29 Update
GB/T 2975 Steel and steel products.Location and preparation of samples and test pieces for mechanical testing*, 2018-05-14 Update
GB/T 4334 Corrosion of metals and alloys-Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels*, 2020-04-28 Update
GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
GB/T 4338 Metallic materials.Tensile testing at elevated temperature
GB/T 6394 Determination of estimating the average grain size of metal
GB/T 9452 Test method for qualified work zone of heat treatment furnace*, 2023-05-23 Update
NB/T 47013.2 Nondestructive testing of pressure equipments.Part 2: Radiographic testing
NB/T 47013.3 Nondestructive testing of pressure equipments.Part 3: Ultrasonic testing
NB/T 47013.4 Nondestructive testing of pressure equipments.Part 4: Magnetic particle testing
NB/T 47013.5 Nondestructive testing of pressure equipments.Part 5: Penetrant testing
NB/T 47014 Welding procedure qualification for pressure equipment
NB/T 47015 Welding specification for pressure vessels
TSG Z6002 Detailed Rules for Examination of Special Equipment Welding Operators
TSG Z8001 Evaluation rules for non-destructive testing personnel of special equipment
GB/T 13401-2017 history
2017GB/T 12459-2017 Steel buttwelding pipe fittings—Types and parameter