1. Fire protection box

Material: The box is made of thin steel plate not less than 1.2mm.

Anti-corrosion: The inner and outer surfaces of the box should be treated with anti-corrosion. The coating of the box that is painted with anti-corrosion treatment should be uniform, smooth and bright. The appearance of the box of surface-mounted bolt box and other forms The coating on the exposed parts of the bolt box should be beautiful in color and should be free of flow marks, bubbles, peeling and other defects;

Box body: The door should be straight and free of skew and warping, and the surface of the box should be smooth and unprocessed Defects and bruises. After the fire-fighting equipment configured in the bolt box is assembled according to regulations, the stress-bearing surfaces shall not be deformed;

Processing: The weld joints should be firm and uniform, without burn-through or scarring. and other defects.

Box door: The door and door frame are made of aluminum alloy profiles with a thickness greater than 1mm. After it is closed in place, it should be flush with the surrounding frame surface, and the maximum tolerance for unevenness is 2mm. The gap between the door and the frame should be even, straight and less than 2mm. The door should be opened easily and flexibly without any jamming.

Nameplate: A nameplate should be set on the door of the box (the nameplate should include the product name, product model, number of the bolt box production license or approval document, registered trademark or factory name, production date, and implementation standards).

Door glass: The door glass is spray-painted inside, and the thickness of the glass should not be less than 4mm. The words "fire hydrant" should be marked in an intuitive, eye-catching, and even font, with the font not less than 100mm high and 80mm wide. The door glass must be firmly installed and not loose.

Appearance: The paint should be uniform, smooth and bright, without flow marks, bubbles or peeling.

Door lock: The surface is required to be smooth and rust-free, and it must be flexible to open and close.

2. Fire hose

Water hose placement: a. For hanging bolt box, the gap between two adjacent comb teeth should be greater than 20mm, and the horizontal arm of the rear hanger after hanging the water hose No deformation allowed. b. Coiled bolt box, the hose reel can be taken out from the hanging arm without jamming. c. For bracket-type bolt boxes, the hose bracket should rotate flexibly, and the hose should be pulled out of the bracket without obstruction.

Hose hose performance requirements: The fabric layer of the hose should be woven evenly and the surface should be clean; there should be no skipped double warp, broken double warp, skipped weft or scratches. The thickness of the hose lining (or covering) should be uniform and the surface should be smooth and flat without wrinkles or other defects.

Sealing performance: Under 0.8MPa water pressure and maintaining pressure for 5 minutes, there should be no leakage along the entire length of the hose.

Pressure resistance: under 1.2MPa water pressure, maintain pressure for 5 minutes without leakage; under 2.4MPa water pressure, maintain pressure for 5 minutes without bursting.

Length tolerance: standard length is 25m, limit deviation is +0.3m.