The plumbing pipes, what an interesting and informative topic. When we start discuss on this topic, of course, we would see it from the very beginning when feeling the necessity of pipes for water supply and disposal, any kind of the pipe was introduced. Before the reasonable growth of population there was not a concept of plumbing for supply of water to be used for cooking and bathing purposes. Disposal of the waste of water was also so simple, it was sent to open ground or holes mad for this purpose.
With the passage of time and increasing growth such disposal of wastes was rightly considered the cause of human diseases and a proper sewerage system was regarded an essential. A study in this regard tells us that first of all 500 years ago, in England, the pipe made of hollowed wooden logs wrapped in steel bending was introduced which was used by the people of America at the end of 18th century and in start of 19th century. The pipes made of bamboo wood and clay were also introduced and used in some areas.
As it was a considerably important issue to supply the drinkable water up to the fixed points (valves and taps etc.) intact therefore the kind of pipes was focused seriously. Another aspect to be considered with great concern was that as the plumbing installation was acutely adjoining part of the buildings and leakage of pipes used for the supply of potable water and disposal of used water, was a threat to the buildings thus the leakage proofing of the pipes was to be attained in any case. Keeping in view the purity of drinking water and leaking, the pipes made of lead were introduced.
After Second World War the lead pipes were replaced by copper pipes, the reason behind this change was the lead poisoning. When the people using the lead pipes in plumbing were informed about the lead poisoning, of course the supply of drinking water through the lead pipes was felt an immediate danger to health and to be replaced by another plumbing pipes. The copper pipes were declared safe by the health departments and recommended to be used in place of lead pipes.
As the copper was a costly and heavy weight metal and it was very difficult for the suppliers to provide the requisite quantity in the market due to inadequate availability of the same with the manufacturers. Moreover when the possibility of replacement of the copper pipes by some other light weight and available at low price metal was there, then the use of copper pipes for plumbing became short. Ultimately in due course of time and with the advancement in plumbing field the pipes made of different kinds of plastic were introduced. Due to pressure of water in the pipes of supply and disposal because of the pumps, motors and tankers, an admirable improvement in respect of plastic material and its thickness was made by the manufacturers. Earlier the tees, elbows and unions used in the plastic pipes plumbing were hard metallic e.g. iron, brass or copper etc. but later on replaced by a hard plastic.