stainless steel doors fire rating,90min fire rated door hinge,fire rate door dolte

Steel fire doors are used in hardware accessories, door hinges and hardware locks are all used in high-grade hardware. The sealing of steel fire door is very high, the door frame and door clearance will be used fire safety materials to carry out additional filling, not only can achieve the actual effect of isolated smoke spread, but also can achieve a good actual effect of sound insulation.

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