15 Years Manufacturer Spiral Wound Gasket-R for Qatar Importers
15 Years Manufacturer Spiral Wound Gasket-R for Qatar Importers Detail:
Spiral wound gasket consists of “V-shape”(or”W-shape”)metal tape and nonmetal tape, which are overlapped each other and wound continuously.To fasten the metal tape,both its start point and end point are tack welded.
Wide Scope of acceptable working conditions. Can be used under high temperature, high pressure and ultra-low temperature or vacuum conditions. Change the combination of the gasket materials is to tackle the chemical corrosion problem of diverse media toward the gasket.
Not very rigid requirements to the surface precision of the flange. May be used to seal flanges with rough surface
Easy installation and handy use.
echnical Data Sheet
Spiral Wound Gasket filled with Graphite
(In Oxidizing Environment )-240~+550℃；(In non-Oxidizing Environment)-240~+870℃
(Under hot water, oil etc. )30 Mpa; (Under vapor oil, gases etc.)20 Mpa
Spiral Wound Gasket filled with Asbestos
Spiral Wound Gasket filled with PTFE
The Spiral Wound Gaskets are mainly used in valves &pipes, pressure vessel, condenser, heat exchanger flanges in oil, chemical, metallurgy, vessel and mechanical industries.
Product detail pictures:
Related Product Guide:
A Look at the Molded Gasket
Comparison of O-Ring Materials
Dependable good quality and very good credit score standing are our principles, which will help us at a top-ranking position. Adhering towards the tenet of "quality initial, shopper supreme" for 15 Years Manufacturer Spiral Wound Gasket-R for Qatar Importers, The product will supply to all over the world, such as: Turkey , USA , America , As an experienced manufacturer we also accept customized order and we could make it the same as your picture or sample specification. The main goal of our company is to live a satisfactory memory to all the customers, and establish a long term business relationship with buyers and users all over the world.
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The first blasting cap or detonator was demonstrated in 1745, when a Dr. Watson of the Royal Society showed that the electric spark of a Leyden jar could ignite black powder.
In 1750, Benjamin Franklin in Philadelphia made a commercial blasting cap consisting of a paper tube full of black powder, with wires leading in both sides and wadding sealing up the ends. The two wires came close but did not touch, so a large electric spark discharge between the two wires would fire the cap.
In 1822 the first hot wire detonator was produced by Dr Robert Hare. Using one strand separated out of a multistrand wire as the hot bridgewire, this blasting cap ignited a pyrotechnic mixture (believed to be potassium chlorate/arsenic/sulphur) and then a charge of tamped black powder.
In 1863 Alfred Nobel introduced the first pyrotechnic fuse blasting cap, using mercury fulminate to detonate nitroglycerin.
In 1868, H. Julius Smith introduced a cap that combined a spark gap ignitor and mercury fulminate, the first electric cap able to detonate dynamite.
A detonator is a device used to trigger an explosive device. Detonators can be chemically, mechanically, or electrically initiated, the latter two being the most common.
The commercial use of explosives uses electrical detonators or the capped fuse which is a length of safety fuse to which an ordinary detonator has been crimped. Many detonators’ primary explosive is a material called ASA compound. This compound is formed from lead azide, lead styphnate and aluminium and is pressed into place above the base charge, usually TNT or tetryl in military detonators and PETN in commercial detonators.
Other materials such as DDNP (diazo dinitro phenol) are also used as the primary charge to reduce the amount of lead emitted into the atmosphere by mining and quarrying operations. Old detonators used mercury fulminate as the primary, and it was often mixed with potassium chlorate to yield better performance.
Electrical detonators[edit source
There are three categories of electrical detonators: instantaneous electrical detonators (IED), short period delay detonators (SPD) and long period delay detonators (LPD). SPDs are measured in milliseconds and LPDs are measured in seconds.
In situations where nanosecond accuracy is required, specifically in the implosion charges in nuclear weapons, exploding-bridgewire detonators are employed. The initial shock wave is created by vaporizing a length of a thin wire by an electric discharge.
A new development is a slapper detonator, which uses thin plates accelerated by an electrically exploded wire or foil to deliver the initial shock. It is in use in some modern weapon systems. A variant of this concept is used in mining operations, when the foil is exploded by a laser pulse delivered to the foil by optical fiber.
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Battelle Memorial Institute
Czech Technical University
Florida A&M University
Johns Hopkins University, Applied Physics Laboratory
Lawrence Livermore National Laboratory
Los Alamos National Laboratory
NASA Marshall Space Flight Center
Sandia National Laboratories
Science University of Tokyo
University of Bologna (Italy)
University of California
University of Ferrara (Italy)
University of Southern California
University of Western Australia
US Army Research Laboratory
US Naval Research Laboratory
By Sally from Mumbai - 2016.05.02 18:28
Timely delivery, strict implementation of the contract provisions of the goods, encountered special circumstances, but also actively cooperate, a trustworthy company!
By Martina from Barcelona - 2015.11.04 10:32