This standard specifies the ordering information,classification,designation,dimension,shape,mass and tolerance,technical requirements,test methods,inspection rules,packaging,marking and certificate of hot-rolled section steel with improved weldability.
This standard is applicable to hot-rolled H section steel(here in after referred to as“H section steel”)with quenching and self-tempering process(QST)to improve weldability.Other hot rolled section steel can also be referenced to this standard.
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