stainless steel threading pipe
Used as a wire and cable protection tube for wires, cables, and automation instrument signals. The material is 304 stainless steel or 301 stainless steel, and the specifications are from 3mm to 150mm. Ultra-small diameter stainless steel threading tube (inner diameter 3mm-25mm) is mainly used for sensing circuit protection of precision optical rulers and industrial sensor circuit protection. It has good flexibility, corrosion resistance, high temperature resistance, abrasion resistance and tensile resistance.
plastic threading tube
The full name of is "Insulation Electrician Bushing for Construction", and the executive standard: JG 3050-1998. In layman's terms, it is a white hard PVC hose, a tube used for anti-corrosion, anti-leakage, and threading wires. Nowadays, PE corrugated pipe is commonly used as "electrical casing", which is of high quality and low price, beautiful and convenient blob
carbon steel threading pipe
Wire and cable protection pipes made of Q235 seamed steel pipes, usually R=6D products. If the R is large, the curvature will be slow, and it will be easy to pass through when threading. When the carbon steel threading pipe is connected to the straight pipe, the interface is protected by a sleeve, and then the pipe and the threading pipe are connected by welding. The purpose is to protect the interface from damage by electric welding. The purpose of the wire and cable. Common specifications are DN20-DN150.
Cable threading pipe, pvs threading pipe, RPE threading pipe, metal threading pipe, PE plastic corrugated pipe
Common sense of wire threading:
Safety is always the first consideration in all decoration. Circuits in home decoration are generally concealed projects. Many loopholes will be hidden if the decoration master is not responsible, which will cause the wires to kink in the pipe and cause potential electricity hazards. The editor has collected the knowledge of wire piercing, let's get to know it together.
In home decoration construction, almost all wires are worn in PVC pipes and buried in the walls. Generally speaking, single core wire 1.5 square wire is used for lighting fixtures, single core wire 2.5 square wire is used for sockets, single core wire 4 square wire is used for more than 3 HP air conditioners, and single core wire 6 square wire is used for total inlet The two-color wire is used for the ground wire. Air-conditioning lines are all lined up in new houses now. Generally, the air-conditioning lines should not be increased. In addition, the cable of the Yuba also needs to use the socket cable, which is 2.5 square meters, and the 4 square meters is the most ideal effect.
There are generally two types of PVC pipes: 6 points and 4 points. If conditions permit, use 6 points and indicate in the budget. A 4-point tube can only wear 1.5 lighting wires, and a maximum of 3 wires can be worn in a tube. The 6-point tube can wear 2.5 wires, and at most 3 2.5 wires can be worn in a tube.
There are two main reasons why wires are worn in PVC pipes: one is because of protection and insulation, and the other important is to ensure future maintenance. When connecting PVC pipes, joints should be used, and glue should be used to connect them firmly. Moreover, the connection between the PVC pipe and the wire box must be covered with a special sleeve, and the PVC pipe and the wire box must not be directly connected. Therefore, the PVC pipes must be arranged first, after the pipes are connected, the wires are inserted, and follow the specifications, so that there will be fewer mistakes in daily life.
The role of the conduit: According to the specification, the wires must be inserted into the conduit during indoor wiring, mainly because:
One, pipe-through wiring is the basis of "live wires", laying the foundation for future line maintenance, replacement and home intelligence.
Two, to prevent damage to the insulation layer of the wire. If directly buried in cement mortar, silicate may corrode the insulation layer of the wire, causing the wire insulation to drop and cause a short circuit;
Three, prevent fire. In case the electrical short circuit causes the wire insulation layer to catch fire, the wire tube can play a role in preventing the spread of the fire, because the wire tube is made of flame-retardant materials and will not burn itself, usually called "flame-retardant tube". If you don't use a wire tube, there are other wire materials or flammable materials next to the wire, which is dangerous.
Four, heat dissipation. Because the cross-sectional area of the wire is determined by the load, there is generally a margin when wiring, but it can still alleviate the wire heating caused by special circumstances.