The mahogany furniture is deeply loved by consumers because of its solid and compact materials, and its price has also increased in recent years. However, some consumers are not clear about which furniture belongs to mahogany furniture. The reporter learned from professionals that there are many types of so-called "redwood", not necessarily red.
He Rui, a senior engineer of the Yunnan Provincial Forestry Department, analyzed that there are actually no redwood species in nature. The title of mahogany furniture began in the Tang Dynasty. Because the Tang Dynasty was made of Zhuhong, the material was made of Dahong and Zhuzhu, so it was called mahogany furniture.
Modern, called mahogany furniture, refers not only to materials but to craftsmanship and traditional culture. Since the Ming and Qing Dynasties, the redwoods are the seven types of woods, such as rosewood, rosewood, fragrant wood, black rosewood, red rosewood, ebony, and wenge, which are produced in Southeast Asia. It is red, such as Hainan huanghuali is yellow, ebony is black.
After 2000, the Redwood National Standard defines 5 categories, 8 categories and 33 types of wood as redwood. In addition to the above seven categories of wood, there are also striped ebony, mainly Sulawesi ebony and Philippine ebony. However, there are still great differences in the understanding of mahogany in the industry. Some people think that rosewood is called mahogany; some think that sandalwood rosewood and huanghuali cannot be called mahogany, but should be above mahogany; some think that the national standard is not There are many woods that should be classified as mahogany; others believe that seven types of wood produced in Southeast Asia can become mahogany.
1, strong, thermostable
Because CPVC compares PP-R, PE-X to be firm. Compared with PP, the PE-X tube, under the similar pressure, CPVC may use a smaller caliber to achieve the same water flow, thereby saving material costs and installation time. Compares with other thermoplastic, CPVC has the remarkable mechanical property under the different temperature, is suitable for the bearing the situation, the application temperature may reach as high as 93°C, the life may amount to 50 years.
2, easy installation
The connection method are very similar with PVC. Most commonly used and simple connection method is resolver cementation. Other connection methods are threaded connection, flange connection and electrode connections.
3, non-corrosive oxygen permeability
CPVC have the anti-oxygen, therefore the oxygen seepage from the radiator will not bring metal corrosion.
4, reducing the infiltration of additives
In order to prevent oxidation, some modified plastics needs to increase the massive antioxidant that may be infiltrated into the water supply system ,causing the ill-smelling smell.
5, without the impact of chlorine in water
A lot of polyolefin materials (including PP, PE) may be decomposed with water, while CPVC is not affected by the impact of residual chlorine in water that there is no cracks and leakage.
6, good flame retardancy
CPVC limiting oxygen index is 60, therefore it will not burn in the air. It has the characteristics : misfires the flame decoction,not to increase the fire set,restrict flame spread,low smoke generation. 7, CPVC has excellent chemical resistance to non-polar strong acid and alkali. Commonly used to substitute the metal to process the corrosive material, such as the poor quality of water, acidic material alkaline matter and other peroxide solutions.
8, the low thermal conductivity
CPVC thermal conductivity is only 1.05. heat is not easy to disseminate from the pipeline, heat loss of pipeline is low.
9, bacteria breeding is not easy
CPVC is not influenced by the impact of residual chlorine in water. So it will not result in cracks and leaks. Inner wall of pipe is smooth, not easy to breed bacteria. The research indicated that the breeding of germs in CPVC pipe is far lower than other materials such as copper, steel and other plastic pipe.
10, low thermal expansion
CPVC thermal-expansion coefficient is lower than other plastics. The tube expansion is very small when tube-pass heat, unlike other types of channels (such as PP-RRP) due to the higher temperature caused by heat expansion coefficient that could cause snake bending,the existence safe hidden danger and eyesores.
11, the test of time
none of a thermoplastic material such as CPVC,avoid the maintenance after 40 year hot water system's test, and displays its excellent performance
CPVC
CPVC Fittings,CPVC Pipes,Chlorinated Polyvinyl Chloride,CPVC Tubing
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