China Window Screen- Give your house strong and aesthetic windows

China Window Screens are used to keep mosquitos from entering the room through windows and doors. Window Screens provide protection against flying insects, reduces pollen intrusion into the premises and indoor allergens with the help of anti-allergic fabrics. Aluminum is used for the supporting construction that is long lasting and corrosion resistant. Window Screens provide protection from flying insects that enter your home ensuring mosquito-free environment and fresh air. Fixed Window screens are installed from the inside using hooks that go over the first seal. Hooks are covered with rubber to protect the seal and screen’s Aluminum frame overlaps a little portion of the windows frame. China Window Screens also provide clear and unobstructed outdoor views along with safety as these are durable and strong.

Standard technical specifications of Fixed China Window Screens are

·        Standard colors are Brown, White & Wood imitation

·        Fixed window screen net color is grey

·        Stable and robust frame profile keeps the net tightly stretched through the entire area of the frame

·        Installation of window screen doesn’t damage the window or door

·        Screens are not to be uninstalled in cold season

·        Anti-allergic screen net color is black and it helps to reduce the amount of allergens in the room thus increasing comfort for people with allergies

·        Net needs to be cleaned occasionally for better ventilation

·        Max width is 61.34″, Max height is 94.49″ & Max area is 23.9 sq.ft.

·        Additional profile is added if any of window screen dimension is longer than 59″

China Window Screens are available in a range of formats including folding, hinged and sliding. These screens are also customized into different dimensions and colors as per specific requirements. China Window Screens are available in fixed and exit formats with the added benefit of emergency escape in the exit formats. Exit screens are fitted with push-open or slide-open mechanisms that are easy to operate and are child-proof. Fixed China Window Screens are fitted with fall prevention technology that is designed and rated to prevent pushing the screens out from the inside when the screens are fitted on a higher floor.

China Window Screens are made of high quality Aluminum that resists galvanic corrosion and increases the life of the screen. These screens are tested for maximum impact and shear resistance as per required standards. China Window Screens are energy efficient and have resistance to UV. These screens provide protection against insects and pests.  China Window Screens are available in a wide range of frame colors and integrate with décor of the homes and buildings. These screens can be customized into different colors and finishes so that your window screen fits your home. There are various options for customizing these window screens such as pet doors, bug strips etc. China Window Screens are strong enough to withstand all kinds of weather conditions. These screens effectively prevent forced entry and remain coarse for a long time. China Window Screens are useful for coastal houses as these can withstand high winds and corrosive effects of sea water.

Window Screen - Durable material with an elegant appearance

There are various types of Window Screens based on applications such as Insect screen, Pet resistant screen, Solar Shade screen etc. These screens are designed to cover the opening of an open window and to keep leaves, birds, insects, debris, pests and dirt from entering the premises. Aluminum is available in various colors such as black, dark gray and bright. These screens are used for window and door applications as Aluminum has high resistance against various harsh weather conditions. These window screens are widely used as Aluminum is durable, sturdy and has a long life. Aluminum also has high resistance against corrosion, rust, abrasion and UV rays. Aluminum is lightweight and can stay for a number of years if maintained properly. Aluminum Window Screen supplier offers screens invarious patterns & textures and are also painted on.

Standard technical specifications of Aluminum Insect Screens are

·        Resistant to rust or mildew

·        Tough and durable

·        Colors: Bright, Charcoal and Black

·        Protective finishes prevent corrosion and contribute to a long life

·        Wire Diameter: .011”

·        Roll Length: 100’

·        Mesh: 18 x 16

·        Standard Width: 4” through 48” in 2” increments plus 54, 60” and 72”

Main features of Aluminum Window Screens that make these screens widely useful are

·        Easy to maintain

·        Strong

·        Durable

·        Long life

·        Resistant to rust

·        Withstands all types of climatic conditions

Aluminum Insect Screen is highly durable and is widely used for Aluminum or Wood windows, doors and enclosures. It is available in its natural color that is Silver and other colors are Charcoal & Black. The mesh count is 18 x 16 strands per square inch and diameter is 011. It has a protective finish that prevents corrosion, strengthens weave and improves the appearance. It has high resistance to rust and can withstand all types of climates. Charcoal & Black finishes help in reducing glare for greater visibility however Silver finish is highly economical. Black Aluminum Screen has the optimum outward visibility of all the Aluminum Insect Screen products. It has a premium coating that is durable and has excellent weathering characteristics. Silver Aluminum Screen is a traditional product with a uniform finish. It allows easy fabrication into window screens, door screens and porch screen applications. Charcoal Aluminum Screen has a coating of consistent Charcoal finish that helps in reducing the glare due to its dark color and improves the outward visibility.

Window Screens have frames of extruded Aluminum with heavy solid extruded corner keys. These can be large screens without the need for a brace bar. Window Screens are made of various wire materials such as Charcoal Aluminum, Bright Aluminum, Black Aluminum, Copper etc. Handles, Tracks, Springs, Spring-bolts and other hardware are adaptable to field conditions. Screen wire is held by a large diameter re-usable tubular Vinyl Spline. Spline color choices are Black, White, Beige, Off-white, Medium gray and Light gray. Window screens are also customized into different shapes, sizes and colors as per various applications.

Monel 400 Bar- Highly useful for marine environments

Monel 400 Bar is an alloy of Nickel & Copper that is resistant to sea water, salt, caustic solutions and steam at high temperatures. It has excellent corrosion resistance in a wide variety of media. It has excellent general corrosion resistance, weldability and high strength. It is resistant to rapidly flowing brackish water or seawater and is particularly resistant to hydrochloric & hydrofluoric acids when these are de-aerated. This alloy is slightly magnetic at room temperature and is widely used in chemical, oil and marine industries.

Main features of Monel400 Bar are

·        It has higher resistance under reducing conditions than Nickel and has higher resistance than copper under oxidizing conditions. It shows better resistance to reducing media than oxidizing.

·        It has corrosion resistance in an extensive range of marine & chemical environments such as pure water, salts, non-oxidizing mineral acids & alkalis.

·        It has excellent resistance to Sulfuric & Hydrofluoric acids. Aeration results in increased corrosion rates. It might handle Hydrochloric acid but the presence of oxidizing salts accelerates corrosive attack.

·        High resistance to chloride ion stress corrosion cracking.

·        Excellent mechanical properties from subzero temperatures up to about 480°C.

·        It has high resistance to alkaline, neutral and acid salts but poor resistance with oxidizing acid salts such as Ferric Chloride.

Monel 400 Bar has applications in

·        Brine heaters & sea water scrubbers in tanker inert gas systems

·        Pumps and valves used in the manufacture of perchlorethylene & chlorinated plastics.

·        Feed water and steam generator tubing.

·        Monoethanolamine (MEA) reboiling tube.

·        Sulfuric acid and hydrofluoric acid alkylation plants.

·        Plant for the refining of uranium and isotope separation in the production of nuclear fuel.

·        Pickling bat heating coils.

·        Cladding for the upper areas of oil refinery crude columns.

·        Heat exchangers in a variety of industries.

·        Propeller and pump shafts.

·        Transfer piping from oil refinery crude columns.

Anneal cycle of Monel400 Bar ranges from 1400 to 1800°C (760 to 980°C) and Annealing is performed in a sulfur compound-free atmosphere as sulfur embrittles material at the annealed temperature range. A high percentage of Monel400 is used without final heat treatment for increasing the strength of the material. Welding methods are similar to those used for austenitic stainless steels however material must be free of scaling for best weld. Preheating and post weld treatment are not required however cleaning of joint area is necessary to avoid embrittlement from paints and lubrication.

Monel 400 alloy is easily cold-shaped however it has a higher work-hardening than carbon steel. It can be considered during design & selection of forming tools & equipment and during the planning of forming processes. Intermediate annealing is essential during cold working and the strength of Monel400 alloy can be increased by hardening. Stress relief annealing is recommended in these cases especially when used in media that can cause stress corrosion cracking in nickel-copper alloys such as mercury and its compounds of fluoro-silicic acid.

Hastelloy C22 Bar- Wide uses in Oil & Gas Industries

Hastelloy C22 alloy is made of Nickel-Chromium-Molybdenum that has high resistance to stress corrosion cracking, pitting and crevice corrosion. It has resistance to the formation of grain boundary precipitates in the weld-heat affected zone due to which it is suitable for use in the as-welded condition. It has resistance to oxidizing and reducing media therefore it can be used in upset conditions. It has excellent weldability and high corrosion resistance as consumable filler wires & electrodes.

Hastelloy C22 alloy can be cold worked due to its ductility and cold-forming is the preferred method of forming. This alloy is stiffer than austenitic Stainless Steels. It has 0.28″ thick sheet in the heat-treated at 2050°F, quick quenched condition and has an average olsen cup depth of 0.49″. It has high resistance to oxidizing aqueous media and to a wide range of chemical process environments including strong oxidizers such as acetic anhydride, ferric acids, seawater and brine solutions.

Hastelloy C22 Round Bars are used in various applications such as

·        Chemical Processing such as heat exchangers, reactors and columns.

·        Waste Treatment

·        Pollution Control

·        Pulp and Paper Production

·        Marine Seawater

·        Petrochemical Plants

·        Oil & Gas Industry

·        Industrial Machinery

·        Refineries

·        Power Industry

·        Food Processing Industry

·        Chlorination Systems

·        Flue Gas Scrubbers

·        Pickling Systems

·        Acid Production

Hastelloy C22 is a wrought nickel-chromium-molybdenum alloy that contains tungsten that further increases the corrosion resistance. It has high resistance to localized corrosion, excellent metallurgical stability and is not sensitized during welding or heating. It is available in various Bar forms such as Square Bars, Hex Bars, Round Bars, Forged Bars, Polish Bars, Black Bars, Bright Bars etc. Hastelloy C22 Alloy is ductile and is easily fabricated into Industrial components.

Hastelloy C22 Alloy is amenable to the Gas Metal Arc, Shielded Metal Arc and Gas Tungsten Arc welding processes. It is supplied in the Mill Annealed condition as the solution annealing procedure is designed to optimize the alloy’s corrosion resistance and ductility. This alloy should be re-annealed after following all hot forming operations to restore excellent properties. It should also be re-annealed after any cold forming operations resulting in an outer fiber elongation of 7% or more. Hastelloy C22 alloy has an annealing temperature of 1121°C and water quenching is recommended. Rapid Air Cooling is suitable with structures thinner than 10 mm. A hold time at the annealing temperature of 10 to 30 minutes is advised depending on the thickness of the structure.

Hastelloy C22 alloy can be hot rolled, hot extruded, hot forged, hot formed and hot upset. It is sensitive to strain and strain rates than the austenitic stainless steels and the hot working temperature range is quite narrow. The advised start temperature for hot forging is 1232°C and the advised finish temperature is 954°C. Moderate reductions and frequent re-heating provide the optimum results. This alloy can also be cold formed, drop hammered, spinned, sheared and punched. It needs more energy for cold forming as it is stiffer than austenitic Stainless Steels.

Sintered porous screens for sparging applications

Sintered porous mesh media is capable of a long filter service life through years of continuous use. The solids state diffusion bonding of the sintered porous metal media eliminates tear, fatigue and breakthrough problems usually of the other media. It is tensile strength makes it suitable for high differential pressures. The whole metal construction seams can withstand high temperatures.

Sintered metal media can be fabricated in diverse cartridge configuration for retrofit. Besides to stainless steel 316L, other alloys are available to meet special requirements like high temperature or chemical resistance. It’s uniform porosity results in high retention efficiency. Sintered porous mesh media has performed a major role from the pretreatment of waste streams, to a finishing stage filter for final solids elimination.

Sparging applications

Gas-liquid contacting is an essential process operation in wastewater treatment. Sintered metal spargers offer a new dimension in efficient and economical performance. Besides to rugged construction and corrosion resistant property, the porosity considerably enhances mass transfer. Sintered metal screens have had proven success in applications including adsorption and direct steam injection that are found in wide range of industries.

Sintered mesh media is available as static or dynamic spargers. Static sparging relies of the gas pressure to develop the bubble and self release in the liquid. In dynamic cases, the bubble is developed at the surface and is sheared off by high fluid velocity. There are two types of dynamic spargers, intrusive and non-intrusive. Intrusive spargers are inserted in a pipeline, while non-intrusive spargers are a shell and tube design installed into the pipeline. Non-intrusive sintered metal spargers were compared with traditional tank sparging under both agitated and non-agitated conditions. 

Absorption by using sintered metal media more than doubles, increasing gas savings by 65 to 74%.

Standard or traditional tank methods of introducing gas include: bubble caps with large bubble propagation and low oxygen uptake; spraying and surface agitation that are energy intensive and inefficient and drilled pipe spargers which produce large, quickly rising bubbles with low contact area and poor mass transfer.

Applications vary by using sintered porous metal spargers as mixers in wastewater settling tanks, or for steam injection to heat water. The energy savings benefit of using sintered metal spargers for steam injection when compared with a drilled pipe distribution. Other sparging applications that would benefit using sintered metal media are:

·         Oxygen injection for BOD and COD

·         Oxygen stripping

·         pH adjustment and control- neutralizing alkaline solutions

·         Elimination of steam hammers

·         Volatime stripping- elimination of volatile organic compounds from waste streams

·         Adding O2 and O3 to purify and supply oxygen to municipal water supplies

·         Ozone treatment

Sintered mesh screens proved to be an economical solution to decrease chemical waste problems in wastewater treatment plant.

Durable and corrosion resistant Sintered mesh screens for your application

Made from durable and corrosion resistant materials, sintered wire mesh screens are used to form a uniform high porosity filter medium. It demonstrates a considerably low pressure drop, high permeability and outstanding dirt holding capacity.

Additionally, sintered metal mesh can be pleated to increase the functional filtration area of a screen, hence further increasing dirt holding capacity, decreasing maintenance and maximizing on-stream processing. With the feasibility to develop fibre screens to meet specific application requirements, combined with inherent durability, sintered mesh screens can be cleaned in situ without interrupting process flow, hence offering the ultimate in process economics by decreasing downtime to a minimum.

Materials used to fabricate sintered wire mesh screens are stainless steel 316L grade, Inconel, Hastelloy and Monel, depending on the requirements of the service conditions. These materials provide excellent resistance to various chemicals and can withstand high temperatures up to 1000oC. These sintered mesh screens ensure greater media uniformity without welds, providing increased corrosion resistance.

High performance sintered mesh screens also offer good permeability, high tensile strength and are available from single wrap designs to multiple layer structures to optimize the available area. These screens can be manufactured in diffusion bonded versions to increase performance security of pore shape and size and have the widest range of pore sizes of any type of filter media.

The precision sintered mesh screens can be made from different types of weaves such as Plain square weave, Reverse plain dutch weave and more. Dutch twill weave is used for the widest selection of surface filtration performances.

The diffusion bonded stainless steel mesh is built by using advanced sintering processing. It is used to construct screens for both high flow and low flow rates to meet your application requirements. These screens can be easily customized to meet the specific demands of materials, strengths, flow requirements, thickness, micron rating and environment. For particular atmospheric conditions, they can be used in temperatures up to 540oC with intermittent service peaks up to 650oC or 1202oF.

Usually made from 316 stainless steel, these screens are also made with Inconel, Hastelloy and Monel grades for service in the most aggressive conditions.

Features and benefits of sintered mesh screens

·         Excellent and mechanically strong structure

·         Made in different shapes without expensive support structures or strips

·         Can be reused as structure allows regular cleaning, offering an economical choice

·         Resistance to various chemicals

·         Made in different types of weaves

·         Precise size

·         Good permeability

·         Robust construction

·         Made in single layered design to complex multi-layered structures to optimize the functional area

·         Smooth surface for backwash applications

·         Broadcast range of pore sizes of any filter media type

·         Ability to withstand diverse process conditions

Applications

·         Catalyst recovery and retention

·         Polymer melt

·         Chemical production

·         Liquids and liquid backwash

·         Pharmaceutical powder recovery

·         Agrochemical

·         Vent filters

·         Gasification and chemical production

Heanjia is a well known manufacturer of sintered mesh screens that are used in various applications in the challenging service conditions. Contact us to know more.

Multilayer sintered mesh screens for vigorous chemical filtration

Sintered wire mesh screens are suitable for filter cartridges that need robust mesh resistant to vigorous chemicals. These screens are available in wide range of sizes to suit industry filter structures and also are made in specific sizes. The robust screens are made from stainless steel and special alloys.

Multilayer sintered mesh

Sintered screen multilayer mesh uses several layers of mesh to make a screen that offers high filtration efficiency with strength. Standard mesh structure comprises an external security layer, an internal main filter layer, drainage layer and eventually two strengthening layers to provide strength. All mesh layers are sintered to develop a single sheet of filter screen.

The sintered mesh screens can be fabricated in cylindrical or sheet formats and in a wide variety of lengths and diameters.

Cleaning

Reverse flow: It is used when most of the contaminants are larger in size as compare to pore size of the screen, reverse flowing the liquid or gas through the element will often be sufficient for cleaning. Generally a flow of minimum 2 times the forward flow offers adequate cleaning.

Ultrasonic cleaning: Surface contaminants can be eliminated by ultrasonic cleaning in a bath comprising detergent, deeply plunged particulate cannot be removed.

Chemical cleaning: Different types of chemicals such as acids, caustics, solvents are used to dissolve the contaminants or service fluids when they are hardened due to contact with air.

Sintered multilayer mesh screens are designed for high temperature applications of industries. The screens can be used for high temperature services up to 480oc. The standard combination of five layerssintered mesh made from stainless steel that is combined through sinter, compression and rolling and made into a type of porous material.

Applications of multilayer sintered mesh screen

Polymer filtration, cross flow filtration, gas filtration, analytical devices, medical equipments, aerosol applications, hot gas filtration, fuel and hydraulic oil filtration, RO pre filtration.

Heanjia offers a filtration solution with long experience in working with designers and end users to supply filtration products to industries like food, beverage, pharmaceuticals and chemical processing. We have developed a range of sintered mesh screens and elements designed to work in the most challenging conditions. We are able to offer a wide range of media that meet the demanding duties.

We can manufacture filter elements in a uniform high porosity filter medium. These elements offer long life and nominal maintenance cost. They provide high strength, good permeability filter medium with a tightly controlled pore size. The robust filter material made from sintered mesh is ideal to use for different types of filtration applications. These screens have a high surface area to provide good flow efficiency and dirt holding capacity.

Materials for sintered wire mesh include stainless steel, Hastelloy, Inconel and Monel. We also provide industrial standard format that easily fits many existing filter housings to perform at higher temperatures.