Cable laying methods There are several types of laying methods for cables: straight burial laying, pipe laying, shallow groove laying, cable trench laying, cable tunnel laying, and overhead laying. These methods have advantages and disadvantages. Generally speaking, urban development planning must be considered. The density of the existing building's cable lengths and the influence of its surrounding environment. From a technical comparison, the cable tunneling method and the laying of cable trenches are convenient for the construction, maintenance and overhaul of cables. In some developed country cities, public tunnels have been considered when planning and constructing cities. Practice has proved that public tunnels work well, greatly reducing the number of repeated investments and the phenomenon of repeatedly excavating roads. However, the initial investment is huge, and construction materials consume funds. At home, due to various factors, this type of laying is extremely rare. . In contrast, direct laying and shallow trough laying are economical laying methods, and buried cables are the most economical and widely used electric laying methods. They are used in places where suburban and vehicle traffic are less frequent. But is not conducive to the maintenance and repair of the cable, in the event of a cable failure, even if the use of the tester to measure the fault point, but also to re-open the cable trench, very inconvenient. Therefore, the choice of cable laying methods must be based on actual conditions and based on factors such as engineering conditions, environmental characteristics, cable types and quantities, and development perspectives, and should be determined in accordance with the requirements of meeting operational reliability, ease of maintenance, and technical and economical rationality.
British Fittings are manufactured using British threads such as British Standard Pipe Parallel (BSPP) and British Standard Pipe Tapered (BSPT). These fittings and adapters are commonly found on equipment manufactured in the United Kingdom as well as from some OEM's in Europe.
The BSPT (tapered) male will mate with a BSPT (tapered) female and the BSPP female swivel. The BSPT male has tapered threads and a 30-degree inverted seat.
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