What are the precautions for cable drag chain selection?
Gas Fastening System is a very popular and very efficient building Fastening System which include gas tool, fuel cell and strip fasteners. Gas tool absorbs flammable gas from fuel cell and mixes it in its air cylinder. The mixture is ignited by electric device and produce a lot of high pressure gas which push the piston go forward to push the strip fastener into the concrete or wood basement. Compared with General Purpose Powder Actuated Fastening System, it is much more quicker and efficient. But it is not used for very hard basement for its highest power energy is no more than 110 Joules.
Gas tool:
Fuel Cell:
Strip Fasteners:
The packages are as the following:
1.Gas tool and its spare parts will be packed by a plastic box with a carton;
2.10 Fuel Cells are packed by 1paper box, 12 boxes are packed by one carton.
3. 1000 strip fasteners are packed by 1 paper box, 5 or ten 10 paper boxes are packed by one carton.
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The following issues need to be taken into consideration when selecting cable chains:
1. The inner diameter of the support plate is D1=d+0.1d (taking an integer) where: d is the outer diameter of the cable, oil and air hose.
2. Determine the height of the chain plate hg and the type of the drag chain THTLXX according to the maximum hole diameter Dmax of the support plate cavity.
3, according to the drag chain function requirements, to determine the support plate type and the drag radius of the drag chain.
1) When the towline is subject to a large cable load, a high-strength support plate type I (block-type) should be selected;
2) When the size of the pipe fittings is larger than the bore diameter of the support plate or must be frequently disassembled and overhauled, the support plate type II (separate type) can be used;
3) When the variety of specifications of the cable is large, the support plate type III (frame type) can be used.
4. The width B of the support plate is determined according to the number of the installation pipe cables, so that the width of the drag chain can be obtained. If the width is greater than 650 mm, an additional drag chain link plate can be added.
5. When the chain is used in special occasions, it can be equipped with protective plates.
There are many types of towline, cable drag chain is one of them, the cable drag chain has general operation requirements in the operation, after selecting the drag chain, in use, we must pay more attention to the operation method. 
