subject: Industry market potential water supply pipe - pipe, PE, PVC-plastics industry [print this page] Industry market potential water supply pipe - pipe, PE, PVC-plastics industry
Plastic pipe Material Plastic mesh HC Water supply network has a long life cycle (30 years or longer), repair and transform the difficult, not easily detected by accident (buried) in three features. Safe and reliable water supply network have two meanings: First, uninterrupted water supply pipe network, to avoid pipe rupture, leakage, or burst pipe. Second, the quality of water transmission pipelines, not because of management's own reasons (such as pipe rust), affecting water quality in pipe network. Water distribution pipe network in the process, the pipeline can not have big changes in water quality: from Water to the user, the smooth arrival, meet the pressure of water and water services. In the pipeline, there are a variety of different pipe materials, a wide range of applications. As advances in technology, manufacturing materials used in water pipes constantly develop new water supply pipes have been greatly improved performance.
With the cast iron pipe production technology development and technological progress. Today, the centrifugal ductile iron pipes cast iron pipes have become the main production process. Domestic use of gray cast iron has been gradually transferred to the centrifugal ductile iron pipe. Ductile iron pipes should not only have high tensile strength and high elongation should be in accordance with the requirements of international standard ISO2531, the tensile strength of ductile iron pipes 420Mpa, DN40? DN1000 pipe elongation 10% , DN1200-26OO pipe elongation 7%. Gray cast iron pipe as the elongation of wood required, on the hot metal raw materials a wide range of harmful components of the control.
Metal pipe in the early construction of Water Distribution Networks, the used lead pipes, it is a good corrosion resistant metal pipe. In the lead pipe has been formed on the surface of the oxide film is considered non-toxic. Analysis of water distribution pipe network is now in the process of changes in water quality can be found, resulting in reduced water quality in the main pipe minimum diameter galvanized steel. Particular user within the pipe. On the one hand, the use of small diameter galvanized steel pipe; little liner coated with protective measures such as the user of the pipe within the pipe of poor quality; the other hand, small diameter composite pipe to replace it.
Cast iron pipe is the most familiar, is to use a wider channel. Cast iron is an alloy of iron and carbon, carbon in cast iron mass fraction higher than 2.11%, carbon content of less than this ratio is low carbon steel. Low carbon steel production, processing and installation more convenient. The mechanical properties of steel is better than other channels, but it is in the pipe surface corrosion protection, is too much trouble, corrosion and high cost, generally used only in the special section of pipe.
Plastic pipe used in water supply network in the plastic pipe can be divided into two categories. One is polyolefin materials: Polyethylene (PE), high density polyethylene (HDPE), polypropylene (PP), polybutylene (PB), such plastic pipes suitable for fusion (heating) connection. The other is vinyl chloride material: PVC ( PVC ), Rigid polyvinyl chloride (U? PVC), chlorinated polyvinyl chloride over
