The historical source of valves

Valves as the fluid pipeline production. Humans use valve has a history of almost 4000 years. In ancient China, vacuum salt brine from the brine well, the once used wooden plug valve in the bamboo pipe. In 1800 BC, the ancient egyptians to prevent the Nile flood and construction of large-scale water conservancy, had similar wooden plug is used to control the flow of the distribution. These are the prototype of the valve. The application of industrial butterfly valves, from watt invented the steam engine began. Appear early in the twentieth century the cast iron, cast steel, forged steel, stainless steel, chrome molybdenum steel, brass, ductile iron, etc all kinds of valves. Used in various industries, various industrial and mining. Domestic first to introduce the foreign valve production technology company, after the introduction of foreign production technology, make domestic valve production technology breakthrough, improve quality, longer service life.

1 - December, 2009, the cumulative production of valve 4583935.72 tons, compared to 2008 increased by 3.74%; 1 - December, 2010, our country the valve output for 5390394.75 tons; 1 - December, 2011, the production of valves for 5958729.61 tons; 1-2012 on April the valve output up to 2041987.98 tons in our country.

Valve products strong demand of the market, state-owned economy steady development, gradually expand the investment in fixed assets. Especially several century project "west-east gas", "China" and "south-north water diversion" project construction need a lot of valve products such as matching; In addition, our country is faced with the advent of the era of industrialization, the department of department of petrochemical industry, electric power, metallurgy, chemical industry and urban construction using large valve will increase the demand for valve products.