Protective gas atmosphere is also known as nitrogen and hydrogen gas protective atmosphere 

system, consisting of the hydrogen generator, nitrogen generator and hydrogen/hydrogen mixture 

unit. High purity N2 and purified ammonia cracking gas will flow into the mixed gas tank through 

adjustable valves and rated flowmeter, becoming the protective gas atmosphere that the 

production lined needed. And the gas ratio can be modified according to the different requirement 

of the production needs, which is a good OSP gases for manufacturing.

Widely used for cold-rolled strip annealing, bright annealing, hot dip galvanized, silicon steel 

annealing, steel strip annealing and other industries.