Identify the cable quality seven aspects

At present our country cable industry in rapid development, greatly small optical cable manufacturers also has come up. These factory production out of the fiber optic cable must have better points. So we are supposed to be how to tell? The following seven aspects can help us identify cable of the pros and cons.
1, skin:

Indoor cable generally USES the record vinyl or flame retardant gather together to record vinyl, should be smooth and shining appearance, a flexibility, easy tear. Poor quality optical cable skin finish is not good, easy and inside of the tight sets, aramid adhesion.
Outdoor cable in PE sheathed should adopt high quality black polyethylene, into cable skin smooth, shiny, after unifor thickness, no small bubbles. Inferior optical cable skins generally with the recycling material production, so that it can save a lot of cost, the fiber optic cable not smooth skin, for raw materials are there many impurities, make the skin to have a lot of extremely fine fiber optic cable pit wow, a long time will crack, water.
2, optical fiber:

Regular cable production enterprise general use of the giant the A grade fiber core, some low price inferior optical cable usually use A class C, D level optical fiber and unsolicited smuggling of optical fiber, the optical fiber for complicated source, the factory over A long period of time, often has FaChao change color, and multimode fiber is often mixed with the single-mode optical fiber, while A general lack of small factory must be detection equipment, not to the quality of the optical fiber to judge. Because the naked eye couldn't tell such optical fiber in the construction, the problem is to touch often: bandwidth is very narrow, the transmission distance is short; Uneven thickness, can't and tail fiber docking; Optical fiber lack of flexibility, dish when a fine turn broke.
3, strengthen the steel wire:

The regular production manufacturer of steel wire is a cable outdoor phosphate processing, surface with grey, such as the steel wire cable no increase after hydrogen loss, rusty, high strength. Inferior optical cable generally with the fine wire or aluminum wire instead of, identification method is very easy-appearance as a white, knead in hand can bend at will. The use of such steel wire production of optical cable hydrogen loss is big, time grew, hang the two ends of the optical fiber box will rust fracture.
4, steel lance:

The regular production enterprise with double-face antirust paint brush in the longitudinal bandage grain steel belt, inferior optical cable USES is the common ironhide, usually only one side have been treated against rust.
5, loose the casing:

Mount the optical fiber cable of pine casing should be the PBT material, the casing high strength, not deformation, anti-aging. Inferior optical cable general use PVC do casing, the casing outside diameter is very thin, with the hand a pinch is flat, a little like we drink beverage straw.
6, fine cream:

Outdoor cable within the fine cream can prevent the optical fiber oxidation, for moisture into the FaChao, inferior optical fiber used in the anointed few, the serious influence the life span of the optical fiber.
7, aramid:

Name and kevlar (r), is a kind of high intensity chemical fiber, at present in a military industrial use most, military helmet, bulletproof vest is this kind of material production. Currently the world, only dupont and Dutch aksu can produce, the price is about more than 30 one thousand tons. Indoor fiber optic cable and power cable (ADSS) overhead is made with aramid yarn strengthen pieces for aramid cost is higher, inferior the outer diameter of fiber optic cable general indoor do very fine, so that you can use a few strands of aramid fiber less to save costs. Such optical cable in the tube wear is easy to be broken.