GB/T 1222-2007
Spring steels (English Version)

Standard No.
GB/T 1222-2007
Language
Chinese, Available in English version
Release Date
2007
Published By
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Status
 2017-09
Replace By
GB/T 1222-2016
Latest
GB/T 1222-2016
Replace
GB/T 1222-1984
Scope
This standard specifies the order content, size, shape, weight and allowable deviation, technical requirements, test methods, inspection rules, packaging, marks and quality certificates of hot-rolled, forged and cold-drawn spring steel. This standard applies to spring steel round steel and square steel (hereinafter referred to as bar) with a diameter or side length not greater than 100 mm, spring steel flat steel with a thickness not greater than 40 mm, spring steel wire rod with a diameter not greater than 25 mm (not greater than Including wire rod for oil quenching and tempering spring steel wire (YB/T 5365)). Upon negotiation between the supplier and the buyer, rods with a diameter or side length greater than 100 mm, flat steel with a thickness greater than 40 mm and wire rods with a diameter greater than 25 mm can also be supplied. The grades and chemical compositions specified in this standard are also applicable to steel ingots, billets and their products.

GB/T 1222-2007 Referenced Document

  • GB/T 222 Permissible tolerances for chemical composition of steel products
  • GB/T 223.11 Determination of chromium content in iron, steel and alloy by visual titration or potentiometric titration*， 2009-05-01 Update
  • 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 223.18 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 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method*， 2008-05-13 Update
  • 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 223.3 Methods for chemical analysis of iron, steel and alloy--The diantipyrylmethane phosphomolybdate gravimetric method for the determination of phosphorus content
  • GB/T 223.43 Iron,steel and alloy.Determination of tungsten content.Gravimetric method and spectrophotometric method*， 2008-05-13 Update
  • GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method*， 2008-08-19 Update
  • 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*， 2008-08-19 Update
  • 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 223.64 Iron,steel and alloy.Determination of manganese content.Flame atomic absorption spectrometric method*， 2008-05-13 Update
  • GB/T 223.67 Iron,steel and alloy.Determination of sulfur content.Methylene blue spectrophotometric method*， 2008-05-13 Update
  • 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*， 2008-05-13 Update
  • GB/T 223.75 Iron,steel and alloy.Determination of boron content. Methanol distillation-curcumin photometric method*， 2008-05-13 Update
  • 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 224 Determination of the depth of decarburization of steels*， 2019-06-04 Update
  • GB/T 225 Steel Hardenability test by end quenching (Jominy test)

GB/T 1222-2007 history

Spring steels


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