In addition to fire and emergency public parts, other pipe wear all use PVC pipe, so, the original a lot of like exhaust fan power, elevator power ah, the distribution box in the dual-control power supply are fire cables, Can you wear PVC pipes? I look like are wearing steel pipe, useless PVC pipe, the specification and technically can do so? Help! More
First, silicone rubber plasticity is too low. Second, the low molecular content of silica gel is too high, silica gel in the production process vacuum effect is not good. Solution: . add 10% gas glue. . the silicone plasticity to do high, plus vulcanizing agent in the process of rubber to be scattered.
3 Terms and Definitions 3.1 Flameproof flameretardance Under the specified test conditions, the specimen is burned, and after the removal of the fire, the flame spreads on the specimen only within the limits and self-extinguishing, that is, Or the ability to spread. 3.2 Fire-resistant fire has the ability to continue to operate in a specified state when burned at a specified source of fire and time, that is, the ability to maintain line integrity. 3.3 halogen-free halogenfree halogen-free, low corrosive combustion products. 3.4 low smoke lowsmoke combustion generated less smoke, that is, light transmittance (visibility) is higher.
Red and white is the audio line, red, blue and green for a group is the video color line; some are three lines of the combination of AV cable, yellow is the video line, red and white is the audio line. If the plug line is what color, as long as the set-top box and the TV socket can be connected to the corresponding, that is, the red socket corresponding to the red socket, white socket connected to the white socket, that is, the output of set-top box Ji Ji The socket can be connected to the input socket of the TV.
