GB/T 33968-2017: Translated English of Chinese Standard. (GBT 33968-2017, GB/T33968-2017, GBT33968-2017): Hot Rolled Steel Sections with Improved Weldability
https://www.chinesestandard.net, 2 juin 2018 - 15 pages
This Standard specifies the ordering content, classification, grade expression method, dimension, shape, weight and permissible deviation, technical requirements, test methods, inspection rules, package, mark and quality certificate of hot rolled steel sections with improved weldability. This Standard is applicable to the hot rolled H-shaped steel sections with improved weldability produced by quenching and self-tempering process (QST). Other hot rolled steel section can also refer to this Standard.
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Dimension Shape Weight and Permissible Deviation
71 Methods for Chemical Analysis of Iron Steel and Alloy
Package Mark and Quality Certificate
Appendix A Informative Quenching and SelfTempering Process QST
Ammonium Phosphomolybdate Analysis of Iron Austenite bainite batch Blue Spectrophotometric Method Carbazide carbon equivalent Chemical Analysis Chemical Compositions Smelting compositions of steel Compositions Smelting Analysis controlled rolled process Copper Content GB/T Determination of Phosphorus Dimethylglyoxime Extraction Photometric Method ferrite grades and chemical grades of Q460QST H-shaped section steel Hebei hot rolled steel Impact absorbing energy impact test improved weldability inspection and acceptance Inspection Items Laiwu Maanshan mark and quality Mechanical Properties Methods for Chemical pearlite Perchloric Acid permissible deviation Phosphomolybdate Blue Spectrophotometric pieces GB/T provisions of GB/T provisions of Table purchaser quality certificate quenching and self-tempering rolled process TMCP Rolled Steel Sections Sampling Methods Sampling Quantities Sections with Improved self-tempering process QST Self-Tempering Temperature Sodium Thiosulfate specified value Spectrophotometric Method GB/T Standard Steel and Alloy steel shall conform supplier Surface quality take the ultrasonic Test Methods test result Thermo-mechanical controlled rolling thickness direction performance Ultrasonic test weight and permissible welding YB/T