What are the Types of Cable Trays?

 

 

What are Cable Trays?

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Cable trays are used for providing mechanical protection in an environment where large quantities of power control cables are at work. Besides providing mechanical protection, these cables are also designed to facilitate a perfect routing path for power or control cables. These cables could be both overhead and under-ground.

There are a variety of cable trays available in different materials. Cable tray manufacturers make cable trays with galvanized steel, aluminium, stainless steel and glass-fiber reinforced plastic. Making a decision about which cable tray to choose completely depends on the usage and installation environment. Here the installation environment refers to taking into account electrical considerations as well as corrosion. Besides, cost is also an important decisive factor to be taken into account while picking cable trays. Let’s take a look at various types of cable trays:

 

Types of Cable Trays

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1. Steel Cable Trays

Cable tray manufacturers also recommended using steel cable trays. They are highly popular because of several qualities and benefits. Steel cable trays offer exceptionally high strength and are low cost also. The only downside to steel cable trays is their high weight and lesser corrosion resistance. Apart from these cons, these cable trays are really ideal to use in a variety of applications.

2. Aluminium Cable Trays

Cable trays manufactured with aluminium by cable tray manufacturers in India are known as aluminium cable trays. Typically, these cable trays can be used in almost any environment. They have a repute of having a good strength-to-weight ratio and commendable resistance to corrosion. That’s not it. These cable trays are easy to install and are also advantageous because of their light weight. According to fastener manufacturers in India, these cable trays are approximately 50 percent lighter than that of steel cable trays.

3. Stainless Steel Cable Trays

Stainless steel cable trays are also widely used across various industries. They are highly resistant to dyestuffs. Besides, great resistance to organic as well as inorganic chemicals in extremely high temperatures is the hallmark of stainless steel cable trays.

4. Solid Bottom Cable Trays

If you are using sensitive circuits, then solid bottom cable trays are the best pick. These cable trays contain a solid bottom part with a solid cover. For superior EMI or RFI protection, these cable trays must be used. All fastener manufacturers in India recommend the same.

5. Ladder Type Cable Trays

It might surprise you that 80 percent of the cable trays used in any industry is ladder type cable trays. Moisture doesn’t accumulate in this cable tray type.

 

Hebei Yongchang Composite Material Technology Co., Ltd. is a leading frp cable tray manufacturer in China, with strong technical force, first-class equipment and advanced technology. We main provide glass frp cable tray, steel cable tray, polymer composite cable tray. For any queries about any cable tray types, feel free to get in touch with us. Stay tuned!

The Internal Structure of the FRP Storage Tank and Repair Method

 

 

Not many people know the internal structure of FRP storage tanks. FRP tank wall is divided into an internal layer, secondary internal layer, and external surface. Next, we introduce these internal structures.

 

FRP storage tank internal structure

1. FRP tank lining layer

FRP storage tank lining layer consists of the inner surface layer and secondary inner layer, the matrix should be used bisphenol A type unsaturated polyester resin, vinyl ester resin, and other resins with excellent corrosion resistance. Reinforcing materials are glass fiber surface felt, glass fiber short-cut raw silk felt and glass fiber untwisted roving cloth, etc.

2. FRP storage tank secondary inner layer

It is made of general-purpose unsaturated polyester resin as the matrix and glass fiber twist-free roving as the reinforcing material. Resin content is 45%-50%, the thickness of the layer is determined by the design calculation.

3. FRP storage tank outer surface layer

The unsaturated polyester resin with excellent weather resistance is used as the matrix, and the glass fiber surface mat or glass fiber untwisted roving cloth (thickness less than 0.16mm) is used as the reinforcing material, with resin content more than 55%, and the thickness of the layer is 0.2-0.5mm.

 

Repair of FRP storage tank

Although the FRP performance is superior, in terms of hardness, corrosion prevention is good, but also for one reason or another, resulting in FRP storage tank leakage, and FRP damage, in most cases to replace the main, repair is very difficult, usually with the gluing method or hot welding method to restore it, here is a brief introduction to the gluing method of repair.

(1) cleaning FRP storage tank. First of all, the damaged tank will be disassembled first, clean and dry it, and do the prerequisite work of repair.

(2) according to the size of the broken part cut appropriate large glass fiber cloth, after baking wax removal, heating until not smoking, take care not to fold.

(3) Glue preparation. There are many kinds of glue formulations, but in general, the epoxy resin and polyamide resin two kinds of resin in the ratio of 1:1 into a wide mouth container, stirring with a stick, the viscosity is generally good to lift the stick does not pull the wire, pay attention to the principle of rather less than more, not too much at a time, to just enough to use up as good, followed by uneven mixing, with a good glue after a period of time will be Self-curing, resulting in waste.

(4) Apply glue. First, use a stiff brush to brush a layer of glue in the inner surface of the glass fiber reinforced plastic tank, and then the prepared glass cloth on the surface of the glue, gently pat the pressure to make it fit tightly so that the glue penetrate the glass cloth; the first layer of good penetration and then coated with a second layer of glue, paste the second layer of glass cloth. So the cycle coated a few layers on it, take care not to get too thick in the coating and framing.

(5) Curing. After painting a higher temperature place to let its natural curing, although it takes a longer time, but definitely not with open fire baking. Wait for its natural curing, and then polish the edges, openings, after spraying, the repair is complete, the glass fiber reinforced plastic tank and restore the strong and durable.

 

We are an FRP storage tank supplier, please feel free to contact us if you need them!