In piping, a gasket is a sealing material placed between the connecting flanges to form a static seal that maintains a leak proof seal under all operating conditions.Different types of gaskets are used to realize leak proof sealing between pipeline flanges ...

The prevention of cold cracks is mainly caused by reducing the diffusion hydrogen content, improving the structure, and reducing the welding stress. Specific measures are: Preheating before welding and slow cooling after welding. This not only improves the ...

Pipe bend has the same function as pipe elbow. But their bending radius are different. The radius of bend is larger than 1.5D, and could be 2D bends, 2.5D bends, 3D bends, 4D bends, 5D bends, and 10D bends. Carbon Steel Pipe Bend are available in ASTM A234 ...

Steel pipe coupling is a kind of pipe fitting used for pipe connecting in industry,and coupling is a kind of short pipe between two pipes,which also named outer connector.And it is widely used in construction,industry and agriculture industries. And what i ...

Corten steel is high strength, low alloy weldable structural steel with exceptional weathering resistance. Corten steel is becoming more popular by roll formed product end-users. Its unique look and naturally oxidizing finish make it especially desirable f ...

Basic principle of bimetal composite steel pipe: the outer base pipe is responsible for pressure bearing and rigid support of the pipe, and the inner liner pipe is responsible for corrosion resistance, wear resistance and other functions. According to the ...

Last article we know what are bimetal composite pipes,we know bimetal composite pipes are an economical and reliable new type of pipe.There are the advantages of bimetal composite pipe: Corrosion resistance: it can effectively prevent secondary pollution a ...

Bimetal composite pipes take carbon steel or low alloy steel pipe as base pipe and CRA pipe as layer or lining pipe by patented technology and special equipment.It is a special metallurgical or mechanical process to ensure a tight bond between the base pip ...

The production of spiral welded steel pipes can show the advantages of high quality and efficiency. The production capacity of a spiral welding pipe unit is equivalent to 5-8 straight seam welded pipe equipment.How to make multiple production lines of pipe ...

Spiral welded pipes are widely used in natural gas, petroleum, chemical, electric power, heating, water supply and drainage, steam heating, pressure steel pipes for hydropower stations, thermal power generation, water sources and other long-distance pipeli ...

Stainless steel has excellent characteristics such as unique strength, high abrasion resistance, superior anticorrosive performance, and resistance to rust. Therefore, it is widely used in chemical industry, food machinery, mechanical and electrical indust ...

When customers call and ask about products, they often say, “i want good fittings, not defective products.” Finished pipe fittings are difficult to distinguish from good or bad quality from the appearance, and they are only known during use. Th ...

ERW pipe is made by rolling low carbon structural steel or low alloy structural steel strip into tube blank according to certain helix angle, and then welding the tube seam. It can produce large diameter steel pipe with narrow steel strip. The specificatio ...

Hebei Haihao Group is one of biggest manufacturers specialized in the production of pipes, pipe fittings and flanges. In 2014 we exported 2,000pcs boiler tubes to Portugal. Boiler tubes material is ASTM A179, seamless. At that time we delivered the high qu ...

Liquid applied epoxy lining is one important lining type.It has excellent water and chemical resistance properties. They can be applied at various thicknesses and are factory applied to provide a dielectric lining. Bonded dielectric lining systems can be a ...

Cement mortar lining is one of the standard linings for steel water pipes.It has good performance to provide long-term protection for steel water pipe at a low cost.How does it protect the pipe? Cement Mortar Lining Protect Steel Water Pipe The actual ceme ...

Galvanized steel pipes are divided into two types, one is hot-dip galvanized steel pipe, and the other is cold-galvanized steel pipe. Cold-galvanized steel pipe is electro-galvanized steel pipe.The content of galvanized steel is very small, only 10 grams t ...

Nipple is a kind of common pipe fittings, which belongs to reducer products, and its main purpose is to install pipes at both ends. As the manufacturer of reducer, we will introduce to you wholeheartedly: When selecting reducer, the port size shall be indi ...

The essential difference between the elbow and the bend is mainly the difference between the “head” and the “pipe”. In addition, there are also great differences in the manufacturing process. Elbow is a kind of connection fittings c ...

As is known to all, stainless steel due to its special internal structure and surface of the oxidation film, so that it is more difficult to react with the medium in general chemical corrosion.However,once the oxide film is destroyed, oxygen atoms in the a ...