The current Chinese standard for tungsten stream mouth refers to People's Republic of China Nonferrous Metals Industry Standard YS/T 854-2012 Tungsten Stream Mouth, which is issued by the Ministry of Industry and Information Technology of the People's Republic of China.

Any more details, please visit YS/ T 854-2012

1.Scope

This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, quality certificate and contract (or order) content on tungsten stream mouth.
This standard applies to the tungsten stream mouth which is made by powder metallurgy process and applied to aluminum silicate refractory fiber manufacturing industry.
Any more details, please visit YS/ T 854-2012