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Steel pipe for fire sprinkler system

Time:2019-11-18 From:Ouersen Steel Industrial Limited Hits:

  Over the years, the fire sprinkler has developed and changed as has the piping system serving it since its invention in 1864. The first fire sprinkler piping was black iron, which was replaced by steel piping in 1892. In the the 1960s copper tube entered the fire sprinkler market, in the 1980s, the CPVC(chlorinated polyvinyl chloride), PB(polybutylene) and these lightwall steel sprinkler pipe were used in fire sprinkler systems. Since the introduction of these piping materials, the installation of fire sprinkler systems has increased.

  Steel, Copper, CPVC and PB sprinkler pipe has different material properties such as the melting point or heat distortion temperature, the coefficient of linear expansion and the weight per unit length. Due to its economic benefit and high mechanical strength, steel fire sprinkler pipe has always been an irreplaceable material for use in construction industrial. When examining an installed fire sprinkler system, the type of pipe used in the system can be identified by appearance and branding. Today we list some commonly used standards for Ferrous fire sprinkler piping.

  According to a manufacturer, the melting point of the steel used in the fire sprinkler system ranges between 1427℃ and 1538℃. steel sprinkler pipe is pressure rated at 1.21Mpa, as is all fire sprinkler piping.Steel sprinkler pipe is rigid and usually black in color. Light-wall black sprinkler pipe typically has a galvanized exterior a silvery appearance. Steel sprinkler pipe conforms to the American Society For Testing And Material or American National Atandards Institute showed below:

  ASTM A795, spec for black and hot-dipped zine-coated (galvanized) welded and seamless steel pipe for fore protection use.

  ASTM A53, spec for welded and seamless steel pipe

  ASTM A135, spec for Elec-Resistance- Welded steel pipe

  Steel sprinkler tubing is usually jointed by threaded, grooved, flanged or plain-end fitting. steel pipe dn 50(2.0in )and smaller is usually jointed using threaded or plain-end fittings. steel pipe dn 65(2.50 in ) and larger is joined using threaded, flanged or grooved fittings. grooved fittings are the first option because they require the least installation time.

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