First, in terms of energy saving of lead ingot, any pipe will consume energy from raw material refining and synthesis, cadmium melting, machine rolling, injection and extrusion. From a macro point of view, metal pipe consumes more energy than plastic pipe. In the composite process of thermal expansion, spraying composite technology of steel-plastic composite pipe than metal pipe energy consumption, thick wall pipe than thin wall pipe energy consumption. From the point of view of construction technology analysis, with electric welding, gas welding, hot melt connection than brushing the waste;

Second, the reliability of the lead ingot pipe and the use of it: this is an important principle of building water, because the building water supply is a pressure pipe, once the water leakage will cause losses to the building and people's property. The pipe should be able to withstand vibration impact, water hammer and thermal expansion and contraction, and withstand the test of time, can be used as a large part of today's water supply pipe system pipe for this reason.

Third, the sanitation of the lead ingot after water supply: the pipe should meet the requirements, and after the test of the recognized testing department, qualified to be put on the market. As far as our current sanitary standards are concerned, the building water supply is within the sanitary permit scope. However, all kinds of modifiers, additives and additives of plastic pipes, metal ions dissolved in water of metal pipes are collectively referred to as environmental factors causing human body changes, and influencing factors on human organs are still to be further studied by human beings. So do not add modifier plastic and chemical composition or surface coating metal tube without heavy metal molecules good health performance, vice versa;

Fourth, radiation protection lead ingot can have space for sustainable development, in the use of any kind of pipe, most people will care about its multiple use and not scrap, which is very important because it can be recycled and reused and does not produce new pollution. For plastic pipe, most of the waste can be recycled and reused, while for PE-X, because the waste or old pipe can not be reused and can not be degraded, this problem has been explored.