The difference between fireproof box and other explosion-proof box and our cable intermediate joint

product comparison

Fire box

Other explosion-proof box

Our cable intermediate connector

Waterproof fireproof explosion-proof device

Product invention patent

no

无

yes

National utility model patent

no

yes

yes

National shape patent

no

yes

yes

National explosion-proof certification and test report

yes（Fire board inspection report）

yes

yes

Housing material

FRP, nylon fiber, organic plastic, SMC flame retardant plastic, ABS flame retardant plastic

Galvanized sheet, iron plate

Steel plate, stainless steel plate,

alloy

Sealing material and performance

no

Flexible fire blocking mud, general glass sealant (can not achieve true sealing), water-soaked joints, will penetrate into the box;

High quality silicone rubber anti-aging seals, sealing rings, special cable sealant and waterproof material, good sealing performance

Fire performance

There is no seal, there is air circulation in the shell, the cable joints explode, and the probability of burning the camp is extremely high;

general

Squeezed full-sealed structure, no air circulation in the shell, good fire performance, and no spontaneous combustion;

Explosion-proof performance

The shell will be blown directly or even broken into pieces;

general

The cable joint has good anti-explosion after explosion, and the shell is intact and does not deform.

Explosion-proof recessed hexagon socket head cap screws

(National explosion protection regulations)

no（General screw）

yes

Stainless steel explosion-proof waterproof recessed hexagon socket head cap screws

Quality assurance

no

no

Underwritten by PICC China People's Insurance Co., Ltd.

Product length, thickness, size

fixed

Relatively fixed

Can be ordered upon request