This standard specifies the ordering content, classification, code, size, shape, weight and allowable deviations, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of hot-rolled mast sections for forklifts. This standard applies to hot-rolled C-shaped, H-shaped and J-shaped steel sections (hereinafter referred to as section steel) for forklift masts.
YB/T 4237-2010 Referenced Document
GB/T 12778 Determination of Charpy impact fracture surface for metallic materials
GB/T 13298 Inspection methods of microstructure for metals
GB/T 20066 Steel and iron.Sampling and preparation of samples for the determination of chemical composition
GB/T 2101 General requirment of acceptance, packaging, marking and certification for section steel*， 2017-07-31 Update
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
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 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime 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 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
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 223.63 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method*， 2022-07-11 Update
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 228 Metallic materials--Tensile testing at ambient temperature
GB/T 229 Metallic materials—Charpy pendulum impact test method*， 2020-09-29 Update
GB/T 232 Metallic materials - Bend test methods*， 2024-03-15 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 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 6394 Determination of estimating the average grain size of metal*， 2017-02-28 Update