PVC-U electrical insulation conduits and fitting in buildings
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 500 m
- Supply Capability:
- 5000 m/month
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Specification
PVC-U eletctrical conduits is made of polyvinyl chloride resion,adding special additivies to be produced by extrusion and injection.PVC-U conduits are mainly used as electrical, communications cable casing.Standard implementation is JG3050-1998 specification for electrical insulation conduits and fitting in buildings
◆ PVC electical conduits is widely used in concrete of construction、floor and wall as wire conduits (underground conduits);gennerally as wiring conduits ,telecommunications and network cabling conduits.
◆ Compared with traditional steel wire ,PVC electrical conduits has characteristics:
◎ Hight resistance to pressure:PVC conduits can stand about 750N pressure and can be externally installed or buried in concrete avoiding any damage caused by pressure.
◎ PVC conduit is moisture proof and has excellent resistance to acid, alkali and rust-eaten.
◎ Flame retardant: PVC insulating electric engineering casing can be self extinguished when kept away from fire (it can be self-extinguished after leaving off flame for 30s), so fire can't be spreaded along the pipe.
◎ It is insulated. In soaking condition, PVC conduit will not be broken down by the electricity of AC2000V, 50Hz. In aspect of avoiding electric shock, international tendency is that insulation is preferred to earth connection. PVC insulation electrical conduit meets this requirement.
◎ Easy installation. The conduit less than de32mm can be easily cut off by pipe cutter. Inserting relevant special spring into conduit, it can be bent into needed angle under normal temperature. Pipeline meeting the construction shape will be formed to connect conduits with PVC adhesive.
◎ Saving investment:compared with steel tube,construction costs of PVC conduits can be greatly reduced in material and installation.
Specification of PVC electrical conduits
| Nominal Size（mm） | Outside diameter（mm） | Mean outside diameter （mm） | Minimum inner diameter（mm） | （mm） Minimum wall thickness of rigid conduit | Metric thread | Conduit lenth L(M) | ||
| Rigid conduit | Felxible and threaded conduit | Rigid conduit | Felxible and threaded conduit | |||||
| 16 | 16 | -0.3 | 12.2 | 10.7 | 1.0 | M16*1.5 | 4+0.005 Base on transportation and engineering requirements | 25-100 |
| 20 | 20 | -0.3 | 15.8 | 14.1 | 1.1 | M20*1.5 | ||
| 25 | 25 | -0.3 | 20.6 | 18.3 | 1.3 | M25*1.5 | ||
| 32 | 32 | -0.3 | 26.6 | 24.3 | 1.5 | M32*1.5 | ||
| 40 | 40 | -0.3 | 34.4 | 31.2 | 1.9 | M40*1.5 | ||
| 50 | 50 | -0.3 | 43.2 | 39.6 | 2.2 | M50*1.5 | ||
| 65 | 63 | -0.3 | 57.0 | 52.6 | 2.7 | M63.1.5 | ||
| Item | Rigid conduit | Felxible and threaded conduit | parts | ||
| Appearance | smooth -（0.1+0.1A）≤ΔA≤0.1﹢0.25 | smooth -（0.1+0.1A）≤ΔA≤0.1﹢0.25 | Smooth ,no crack | ||
| Maximum outside diameter | Pass by gauge weight | / | |||
| Minimum outerside diameter | Pass by gauge weight | / | |||
| Minimum inner diameter | Pass by gauge weight | inner diameter not less than 10.7mm | / | ||
| Minimum wall thickness | Wall thickness not less than 1.0mm | / | |||
| Compression test | Loaded in 1min，Dt ≤25% Unloaded in 1min，Dt ≤10% | Loaded in 1min，Dt ≤10% | / | ||
| Impact test | At least 10 pcs is not bad ,no crack in 12 specimens | / | |||
| Bending test | No visible crack | no visible cracks, Pass by gauge weight | / | ||
| Flat lets | Pass by gauge weight | / | |||
| Drop strength | no broken ,no shattered | no broken ,no shattered | |||
| Heat resistance | Di≤2mm | gauge by weight | Di≤2mm | ||
| Flame retardant test | self-extinguished time | Te≤30s | Te≤30s | ||
| Oxygen Index | OI≥32 | OI≥27 | OI≥32 | ||
| Electrical performance | no breakdown within 15min R≥100MΩ | no breakdown within 15min R≥100MΩ | |||
- Q: What do you mean by "DN" on hydraulic hose?
- DN stands for nominal diameter. The standard diameter after standardization, the midpoint between the inner diameter and the outer diameter, in units mm.
- Q: Does the rubber tube affect the engine in the car's tank?
- I don't know what you mean by that, but the car's tank itself needs to be sealed and no clutter is allowed
- Q: What is the method of making large diameter rubber joint?
- Method for making large caliber rubber parts:Mold making: external shell, internal steam box, steam, internal core, hydraulic cylinder do support (two years earlier, with Jack) and high strength rubber cord wrapped into the mould, after high-temperature steam curing, eventually forming.
- Q: The difference between silicone tube and PVC tube
- Silica gel tube, material and chemical properties of silica gel is stable, in addition to alkali, hydrofluoric acid does not occur with any chemical reactions, chemical resistance, good electrical insulation performance, not easy to aging weather resistant, soft material up to 330 degrees to -40 degrees, non-toxic material, colorless and tasteless, mainly by all family activities. Life tube will choose to use silica gel material, the main use occasions in household appliances, medical industry, industry, automobile industry and so on.
- Q: Toilet hose and water tank joints leaking, how to repair?
- There is a rib joint. It may be that the rubber sealing ring in the joint is not installed or damaged. Turn off the water source, disassemble, check and replace;
- Q: M40 and M50, and then the hose is 2 "what does the box connection mean?"
- M40 and M50 are the specifications of the teeth, but you do not specify the spacing of the teeth.
- Q: The difference between the rubber pipe and PE pipe?
- The appearance of the native HDPE is milky white and is somewhat translucent in the narrow cross section. PE has excellent properties that are resistant to most life and industrial chemicals. PE pipe welding, butt welding of PE pipeline, the method provides the highest reliability and the diameter of the range and pressure process: the end of the heating tube, using a tool called mirror contact pressure and temperature under the definition of "". The ends are contacted rapidly and remain under pressure during cooling. A medium density polyethylene pipe and PE pipe with high density polyethylene pipe. Divided into SDR11 and SDR17.6 series according to the wall thickness. The former is suitable for transporting gaseous artificial gas, natural gas and liquefied petroleum gas. The latter is mainly used to transport natural gas.
- Q: The selection of valves and fittings has the following requirements
- The selection of hose inner screw thread joint can be rotated, because not hose and the joint body can rotate freely after buckling, configuration of internal thread after disassembly for hose.
- Q: Is rubber tube harmful to drinking water?
- There are drinking water standard rubber tube, ordinary hose can not be directly applied to drinking water, there is low toxicity!
- Q: Difference and application of rubber joint and rubber expansion joint
- Because the material of rubber expansion joint is higher than the price of ordinary rubber, the price of rubber expansion joint is naturally higher than that of our common rubber joint. The so-called "one point price", "goods", the user in the choice of rubber expansion Festival at the same time, must be based on the use of media to select materials. High quality rubber expansion joints are usually made of butadiene styrene rubber, while SBR is the earliest synthetic rubber. Because it is developed with reference to natural rubber.
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PVC-U electrical insulation conduits and fitting in buildings
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 500 m
- Supply Capability:
- 5000 m/month
OKorder Service Pledge
OKorder Financial Service
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