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The high quality long fibre filament needle punched geotextile is a new building material, synthetic polymer materials are polyester, polypropylene, acrylic, nylon and so on. . General engineering is mainly used for non-woven geotextiles. Geotextile anti-seepage, filtration, drainage, separation, reinforcement, protection, sealing and other functions, it is compared with conventional masonry and concrete results impermeable materials, with low investment, simple construction process, short time, good resistance The advantage of effective channel utilization in osmosis.

Geotextiles are divided into two types, one is a needled geotextile, which is another kind of polyester filament geotextile. The geotechnical material is mainly made of polyester and polypropylene. Its main function is for building materials. Isolation for good performance in water filtration casting to increase the stability of the building structure to change the soil quality can prevent the damage of many of these soils.

What are the types of steel coil?

A. Hot rolled coil is a steel sheet heated by a billet. The thickness of wholesale hot rolled steel coil is between 2 mm and 13.5 mm. Generally, the price of hot rolled coil is cheaper than that of flat plate.

B. The raw materials of cold-rolled coils are the same as those of hot-rolled coils. The process of knowledge processing is different. The high quality cold rolled steel coil china is transformed into coil by repeated cold rolling, pickling and cold rolling. This kind of steel plate has a smaller scope of use and its price is cheaper than that of hot-rolled coils.

C. Galvanized Steel Coil made in China, as its name implies, is coated with zinc metal on the surface of the steel plate. The main purpose of this is to prevent the surface of the steel plate from being corroded and to increase its service life. Galvanized sheet coil can be divided into hot dip galvanized steel sheet, galvanized steel sheet, composite galvanized steel sheet and color galvanized steel sheet according to different processing methods.

D. The high quality prepainted color galvanized coil is made of galvanized sheet coil as the base material, repeatedly spraying paint on the galvanized sheet, and then through complex processing procedures. This kind of roll has many colors, such as yellow, blue, red and white teeth. Because of the moderate price, it is widely used as wall and roof.

The hot sale hdpe geomembrane pond liner should not be stretched too tightly. The soil embedded in the soil at both ends is corrugated. Finally, a 10cm layer of transition layer is laid on the HDPE geomembrane on the paved HDPE geomembrane and 20-30cm. Stone (or enamel prefabricated block) is used as an anti-shock protection layer.

During construction, efforts should be made to avoid the stone directly on the geomembrane. It is best to carry out the construction of the protective layer while laying the film. The joint of the composite geomembrane and the surrounding structure should be anchored by expansion bolts and steel strips, and the joints should be painted. Emulsified asphalt (thickness 2mm) is bonded to prevent leakage of bentonite waterproof blanket at this place.

Now the steel industry is developing better and better. The former iron products are easy to rust and easy to corrode and not durable. The cold rolled steel coil factory in stock is also slowly replacing the original iron products. The cold rolled coils have good surface quality, high smoothness and are not easily oxidized. Business welcome. Moreover, many consumers are entangled in the purchase process. What is the difference between cold rolled coil and cold rolled strip? Let's talk about their differences today:

Cold rolled coils are often called cold rolled coils. Due to the cold work hardening caused by continuous cold deformation, the strength and hardness of the rolled hard rolls are increased, and the toughness index is lowered. Therefore, the punching performance is deteriorated only for the parts that are simply deformed.

The cold-rolled steel sheet is processed from a hot-rolled sheet at a normal temperature. Although the steel sheet is heated during the processing because of rolling, it is called cold rolling. Since the cold rolling of the hot rolling through the continuous cold deformation is relatively poor in mechanical properties, the hardness is too high. It must be annealed to restore its mechanical properties. The unrolled hard rolled coil is usually used for products that do not require bending.

The cold-rolled coil is produced by rolling hot-rolled coils at room temperature below the recrystallization temperature, including plates and coils. Many domestic steel mills such as Baosteel, Wuhan Iron and Steel, and Anshan Iron and Steel can produce. The steel plate, also called the steel plate, is also called the steel plate, which is called the steel plate or the flat plate.

Cold rolled coils are used in a wide variety of applications such as automotive manufacturing, electrical products, rolling stock, aviation, precision instruments, and food cans. Cold-rolled steel sheet is the abbreviation of ordinary carbon structural steel cold-rolled sheet. Also known as cold-rolled coil, cold plate is sometimes mistakenly written as cold-rolled sheet.

The T-Type corrugated gl roofing sheet for sale is not only the waterproofing requirement of buildings but also an important measure to protect aerated concrete roofing panels. The coiling materials are still commonly used at home and abroad. Due to the narrow plate and the flat seam butt joint, the overall rigidity is poor. Therefore, if the linoleum is directly laid on the roof panel, the following points should be noted in the design:

1. The waterproof layer of aerated concrete roofing sheet should have better overall rigidity in addition to its own waterproof performance. The overall rigidity of the board should be well connected with the main structure. Strengthen the joint between the side seams. If the gap is small and the general cement mortar is used for filling, the metal sheet subjected to anti-rust treatment should be nailed between the joints, or the mortar should be bonded.
2. In the flat roof, generally no slope is found on the upper part of T-Type corrugated gl roofing sheet for sale and the slope is determined by the structure. Only when the slope of the support is uniform and flat, the flatness of the board surface can be ensured, and the linoleum can be laid.
3. Before the aerated concrete roof sheet is made of linoleum, there is generally no gas barrier layer in the upper part. The function of the gas barrier on the reinforced concrete roof is to prevent the moisture in the room from penetrating into the insulation through the reinforced concrete roof panel and affecting the insulation effect. However, the aerated concrete T-Type corrugated gl roofing sheet itself is the insulation material, so it is separated in the upper part. The gas layer has lost its meaning.

Regardless of any product, you must first understand its features and performance in order to use it reasonably. The following is mainly about the characteristics of low cost Galvalumed steel plate.

1. Sound-absorbing and heat-insulating performance--The porous foam core layer has good sound-absorbing and heat-insulating properties.

2. Large area, light weight - light body materials, reduce building load

3. Rich in color, long-lasting stability - fluorocarbon paint coating, rich in color, smooth surface, acid and alkali resistance, mildew, rain as new

4. High toughness, high strength - better toughness and strength than similar products

5. The construction is convenient - the product can be directly nailed, drilled, sawed, planed, easy to handle the special roof shape such as façade and arc window

We are a professional Chinese color corrugated steel sheet manufacturer. If you have any questions or needs related to roofing panels, please contact us. E-mail: Jennyma889@yahoo.com

What is geomembrane, I believe that as a professional smooth pond liner hdpe geomembrane supplier and manufacturer is qualified to talk about this issue.

The geomembrane is made of high-density polyethylene film, HDPE geomembrane, HDPE anti-seepage film, which is a waterproof barrier material based on high molecular polymer.

HDPE geomembrane has excellent environmental stress crack resistance and excellent chemical corrosion resistance, excellent chemical corrosion resistance, large operating temperature range and long service life. HDPE geomembrane has strong tensile strength. With the elongation at break, HDPE geomembrane can be used in a variety of different geological and climatic conditions, adapting to the geological heterogeneity of the geomembrane to reduce the strain.

The introduction about what is a geomembrane is here. If you have other questions about geomembranes, you can consult a smooth pond liner hdpe geomembrane supplier.

The high quality Galvalume Corrugated Roofing Sheet is composed of 55% aluminum, 43% zinc and 2% silicon solidified at 600 ~C. Its whole structure consists of Al-Fe-Si-Zn, forming a compact quaternary crystal alloy.

High quality Galvalume Corrugated Roofing Sheet has many excellent characteristics:

1. Strong corrosion resistance, which is 3 times that of pure galvanized sheet;

2. The surface has beautiful zinc flower, which can be used as building roof. Corrosion resistance of "aluminized and galvanized steel coil" is mainly due to the protection function of aluminium and aluminium.

When zinc is abraded, a dense layer of alumina is formed. The uniqueness of the alumina-galvanized sheet prevents further corrosion of the corrosive substance and internal heat resistance.

The fast working grinding wheel type

Parallel long life grinding wheel: mainly used for cylindrical grinding and edge machining of cemented carbide.

Parallel arc grinding wheel: mainly used for forming grinding of hard alloy and forming grinding of circular arc surface.

Double-sided concave grinding wheel: mainly used for grinding measuring tools and coreless grinding machines.

Double beveled fast working grinding wheel: mainly used for forming grinding of hard alloy gear hobs and thread cutters.

Bowl-shaped grinding wheel: mainly used for sharpening of carbide tools, high-speed steel tools, and also for milling and grinding of hard alloy gear hobs and thread cutters.

Cold rolled steel coil factory supplier tells you what a cold rolled sheet is.

The production of cold rolled strip requires not only high precision of surface and dimension, straight shape of strip, but also good structure and properties. Cold rolled strip has the following characteristics in rolling process:

Because cold rolling takes place below the recrystallization temperature of metals, the strength and hardness of metals increase while the plasticity decreases during cold rolling. This phenomenon is called work hardening. The result of work hardening is that the deformation resistance increases, the rolling pressure increases, the plasticity decreases, and brittle cracks easily occur. After work hardening exceeds a certain degree, the rolled piece will be too hard and brittle to continue cold rolling. Therefore, after a certain pass of cold rolling, the steel plate is often softened (recrystallization annealing, solution treatment, etc.) to make the rolled piece plastic, reduce the deformation resistance, so as to continue rolling thin.

If you want to know about cold rolling and hot rolled steel coil prices, please contact me.

GI steel coil with spangles in stock has been widely used in construction, home appliances and other major industries since its introduction. Due to the ever-expanding range of use, the product's formability and various properties of the steel sheet are continuously improved, and thus the aluminum-zinc-plated steel sheet which is superior to the hot-dip galvanized steel coil in some properties is produced. The hot sale aluminum zinc steel coil is an AL-Zn combined aluminum-zinc-plated steel sheet obtained by hot dip coating on a cold-rolled hard steel sheet of various strengths and thicknesses. The coating composition is 55% aluminum, 43.5% zinc, 1.5% silicon and appropriate trace elements.

GL Galvalumed coil performance is superior to hot-dip galvanizing in production and processing.

1. Processing performance

China aluminum zinc steel coil is similar in processing performance to hot-dip galvanizing, and can fully meet the requirements of rolling, stamping, bending and other forms of processing.

2. Corrosion resistance

The test was carried out under the premise of hot-dip galvanized steel sheets and galvanized steel sheets of the same thickness, plating and surface treatment. Aluminized zinc has excellent corrosion resistance than hot-dip galvanizing, and its service life is 2-6 times that of ordinary galvanized steel.

3. Light reflection performance

Aluminized zinc reflects twice the heat and light of galvanized steel and has a reflectance greater than 0.70, which is better than the 0.65 specified by EPA Energy Star.

4. Heat resistance

Ordinary hot-dip galvanizing products usually use a temperature not exceeding 230 degrees, 250 degrees will change color, and galvanized sheets can be used for a long time in a 315 degree environment without discoloration. In the environment of 300 degrees for 120 hours, the color change of the galvanized steel sheet treated by Baosteel heat-resistant passivation is much lower than that of aluminum and aluminized sheets.

5. Mechanical properties

The mechanical properties of aluminum zinc steel coil are mainly expressed in yield strength, tensile strength and elongation. Ordinary DC51D grade 150 g / square galvanized steel, the general yield strength is between 140-300mpa, tensile strength between 200-330, elongation between 13-25. The grade of DC51D+AZ galvanized 150g/sqf galvanized steel sheet yield strength between 230-400mpa, tensile strength between 230-550, and elongation rail between 15-45.

The hot rolled steel coil is used as the raw material, and the oxide scale is removed by pickling, and then the cold rolling is performed. The finished product is rolled hard roll, and the cold work hardening caused by the continuous cold deformation causes the strength and hardness of the rolled hard roll to rise, and the toughness index decreases. Therefore, the punching performance will deteriorate and can only be used for parts that are simply deformed. Rolled hard rolls can be used as raw materials for hot-dip galvanizing plants because the hot-dip galvanizing units are equipped with an annealing line. The hard roll weight is generally 6~13.5 tons, and the inner diameter of the coil is 610mm.

Generally, cold-rolled rolled sheets and coils should be subjected to continuous annealing (CAPL unit) or hood furnace annealing to eliminate cold work hardening and rolling stress, and achieve the mechanical properties specified in the corresponding standards.

The surface quality, appearance and dimensional accuracy of the high quality cold rolled steel coil china are better than that of the hot rolled coil, and the thickness of the product is thinly rolled to about 0.18mm, which is favored by the majority of users. Deep processing of products with cold-rolled steel coils as a substrate has become a high value-added product. Such as electro-galvanizing, hot-dip galvanizing, fingerprint-resistant electroplating zinc, high quality PPGI prepainted galvanized steel coil and vibration-reducing composite steel plate, PVC laminated steel plate, etc., so that these products have good quality, high corrosion resistance and other excellent quality, has been widely used. Cold rolled steel coils must be finished after annealing, including cutting, tailing, trimming, leveling, leveling, rewinding, or longitudinal shearing. Cold-rolled sheet punching nets are widely used in automobile manufacturing, home appliances, instrument switches, construction, office furniture and other industries.