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Perforated filter disc, made of stainless steel, aluminum, low carbon steel, copper, brass, has different shapes such as triangle, round. With high accurate filter precision and high anti-corrosion performance and rust resistance, perforated filter discs can be used in filtration of air, liquid, solid, oil and other fields.

Perforated casing pipe creates a channel between the pay zone and the wellbore to make easy flow of oil and gas to the wellbore. Manufactured by N80, J55 or 13Cr110 which are confirmed by API casing or tubing specification, our perforated liners are featured by high strength and anti-deformation. Punched holes with diameters from 3/8" to 1/2" are arranged in straight or staggered conditions.

Perforated square tubing is cost effective choice of manufacturing square sign post and telescoping square tubing, which provide easy installation and savings in time and labor cost. One prominent advantage is its unique telescoping feature. Smaller sizes fit smoothly and snugly into the next larger size, which is possible by the help of high-frequency resistance welding.

Straight seam welded perforated pipe is manufactured by perforated metal sheet which is cut to desired size and then rolled and welded into a tube. It is mainly used in high pressure applications where spiral tubes can't reach the working pressure. Straight seam welded tube can be made of carbon mild steel, stainless steel and aluminum alloy.

Perforated metal tubes are mainly manufactured by two methods - welded or lock seam of perforated metal sheet. Straight lock seam perforated tubes are designed for light duty applications like oil and lube filtration industries. Main materials are carbon steel, aluminum alloy and stainless steel. They are designed with diverse patterns including perforation patterns, hole shapes and end margin forms.

Spiral welded perforated pipe is helically formed and automatically welded of continuous sheets of perforated metal based on high precision and high quality of welding. Compared with straight welded tube, spiral welded tubing is approximately 15% stronger. Spiral metal tube does great job in holding high pressure and high impacts.

Lock seam perforated pipe is made by folding up the overlapping edges against each other, then folding them over in the same direction a number of times. It has flush surface outside and lock seam inside. This type perforated tubing is the popular option of fluid filtration like center tube in the filter house.

Aluminum perforated tube is extensively used as screens, filters, shields and guards of engineering, construction and material handling industries. It is especially suitable for low-temperature applications when its strength increases and ductility retains. However, when its working temperature reach 400 °F, aluminum tube tends to lose some strength.

Stainless steel perforated pipe is great alternative for exhaust tubing of automotive applications. Owing to its excellent corrosive resistance and overall properties, stainless steel perforated tubing is completely recycled. Perforated stainless steel pipe are manufactured with various shapes of holes - round, slot and square in straight or staggered forms.

Perforated steel tube (either hot rolled or cold rolled) is more cost-efficient compared with the other two types like stainless steel tube and aluminum tube. Though carbon steel is subjective to corrosion and rust, external protective coating will remedy its shortcomings. The frequent method to resolve corrosion problems is hot-dip galvanization, electro galvanization or other powder coated.

Collection of old computers, keyboards, mouse, motherboard hard disk, monitor, printers and all type of computer scrapes..