PE SES pipe have what advantage?

In weight than the traditional drainage tube (cast iron pipe, concrete pipe); Large liquid (30% above, in the same conditions, such as pipe size, 3) velocity); Has good corrosion resistance of the concrete pipe flow ability 1. The Lighter resistance; Smooth internal and external surface; Convenient construction; Good flexibility; Good resistance to scratch; Lower installation cost than traditional drain; Lower leakage connection; Cold weather; Service life of 50 years. To complete recovery as PE is non-toxic materials
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GJFJV/ZY (Indoor Calble) profile and its characteristics.

Indoor Calble is based on the use of optical fiber cable environment for classification, and the relative is outdoor cable.
Indoor Calble tensile strength is small, the cover is poorer, but also more portable, economic. By optical fiber (fine as hair fiber glass) and plastic to protect casing and plastic skin structure, cable inside not gold, silver, copper aluminum metal, generally no recovery value. Indoor cable is a certain number of optical fiber cable way according to certain of heart, outsourcing has sheath, some still cladding outer sheath, used to make the optical signal transmission of a communication line.

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FTTH Terminal Cable related introduced!

Refers to the FTTH optical network units (ONU) installed in a home user or enterprise users place, is light access series except FTTD (optical fiber to the desk) outside the most close to the user's optical access network application type. The FTTH significant technical features is not only offer more bandwidth, and enhanced the network to data format, rate, wavelength and protocol transparency, eased restrictions on environment condition and power supply and demand, simplify the maintenance and installation.
Terminal cable has good electrical properties and mechanical performance, can in all kinds of harsh environmental conditions use for a long time. With light weight, convenient in installation, etc. Cable terminal head are widely used in electric power, petroleum chemical industry, metallurgy, railway port and construction fields.
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GYFTY (Layer Stranded Optical Cable) Y related definition structure!

GYTS cable is have like light transmission speed communication cable, optical fiber cable GYTS with it, transmission speed, the secrecy good, the resistance to electromagnetic interference, by good insulation, long service life, good chemical stability. GYTS cable mainly divides into: GYTS multimode optical cable, GYTS single-mode optical fiber cable two types.
The 9/125 μ m single-mode fiber or 50/125 μ m, 62.5/125 μ m multimode optical fiber sleeve into with higher resistance water material made of pine casing, pine casing filling block water combined material. Cable core center is a metal strengthen core, for multicore cable, strengthen the core should be applied a layer of PE coat. Pine casing and filling line around the center to strengthen core mutual ground compact and circular cable core. In the cable core crack filling and resistance water filling material. Double wrinkles steel belt longitudinal bag after extrusion, PE sheathed cabling.
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Shaped Polarication Maintaining Optical Fiber introduced!

Optical fiber is fibre-optic logogram, is a use of light in a glass or plastic fiber of total reflection principle and a light transmission tool. Former Hong Kong Chinese university President high Kun and George a. Hockham first puts forward optical fiber can be used for communication ideas.
Shaped Polarication Maintaining Optical Fibersmall beatength low attenuation
Bend - insensitive good environmental adaptability Used for optical fiber gyroscope, fiber optic hydrophone, PM couper and so on.
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Standard single - mode optical fiber material is introduced.

Single-mode fiber: center glass core very fine (core is commonly 9 or 10 μ m), can pass a pattern of light. Therefore, the die room dispersion is very small, for remote communication, but there are still some material dispersion and waveguide dispersion, such single-mode fiber to the light source spectrum width stability have higher requirement that spectrum width to narrow, better stability. Later found in 1.31 u m wavelength place, single-mode fiber material dispersion and waveguide dispersion for a positive and a negative, the size also just equal. So, 1.31 u m wavelength region became optical fiber communication a very ideal job window, is now practical optical fiber communication system the main work band 1.31 u m conventional single mode optical fiber is the main parameters by the international telecommunication union (ITU - T in G652 the proposed certain, so this kind of optical fiber is also called G652 optical fiber.

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KRD320 description!

KRD320 regularly and relatively complete crystal shape, low content of impurities and relatively high impact strength. Suitable for hard granite, marble, concrete, refractory materials, such as stone cutting tools.



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Steel strand used in prestressed concrete type and description!

Stranded wire is by multiple root wire twisted consisting of the iron and steel products, carbon steel surface can according to need to increase the zinc coating, zinc alloy layer, aluminium coating (aluminum clad), copper plating layer, coating epoxy resin (epoxy coated), etc.

The most commonly used steel wires for galvanized steel wires and prestressed steel wires, commonly used in prestressed steel strand diameter 9.53 mm to 17.8 mm range, a little more coarse diameter steel wires. Prestressed steel strand each root of the steel wire is commonly 7 root, also have two root, 3 root and 19 root, wire can have metal or nonmetal coatings. Coating anticorrosive grease or paraffin wax bag HDPE called unbonded prestressed steel wires (unbonded steel strand).

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