Hot rolling and cold rolling are both steel plate or profile forming processes, and they have a great influence on the structure and properties of steel. The rolling of steel is mainly hot rolling, and cold rolling is only used to produce small section ste ...

High frequency welding principle: With the skin effect of the high-frequency current, the high-frequency electric energy can be concentrated on the surface layer of the weldment, and the proximity effect can be used to control the position and range of the ...

Both hot forming and cold forming form metal into its final shape,but what’s the difference between hot forming and cold forming.We compare them in several ways. Run Speed & Quality With hot steel, it might take 50 rolls to thin a workpiece out, ...

Hot forming process is used very frequently for casting of industrial products and parts. In this process, heat is applied to soften the piece of metal. This metal or raw material is available in the form of sheet, bar, tube or wire. Then some form of pres ...

Typically it’s a process in which the metal sheet or strip stock is placed between rollers and then compressed and squeezed. The amount of strain generated determines the hardness of the finished product. There can be numerous types of cold rolling m ...

The continuous strengthening of stainless steel sheet materials is constantly developing to meet the actual needs. There are many ways to strengthen the stainless steel plate. The strengthening of stainless steel plate can reduce the thickness of the plate ...

There are many ways of anticorrosive treatment on stainless steel pipes. By improving the surface treatment methods and processes of stainless steel pipes, many practical applications can be improved.(What is the main classification of stainless steel pipe ...

With the increase of engineering construction, the demand for new pipes is also growing. As a new type of pipe, wear-resistant elbow not only obtains competitive advantage, but also obtains more guarantee with high quality. Therefore, the application field ...

Ductile iron pipe, made from ductile cast iron, is a graphite-rich cast iron in which the graphite has a spheroidal shaped molecular structure. This molecular structure makes the cast iron less brittle and more resistant to impact than the other varieties, ...

The ASTM A815 specification covers duplex and super duplex butt weld fittings to match ASTM A790 and ASTM A928 pipes. These special grades of stainless steel are used for various chemical processes,  piping, oilfield piping and heat exchangers, flue gas de ...

Steel pipe coating is an anti-corrosion coating treatment, preventing steel pipes form corrosion or damage in the process of storage and transportation. In the past,steel pipes are all brushed artificially one by one by black bituminous paint. This work no ...

Malleable cast iron pipe fittings are made of malleable steel. It should be noted that although Ma steel is malleable cast iron with toughness, it cannot be used for forging. Ma steel pipe fittings and malleable cast iron pipe fittings are named by pipe ma ...

Stainless steel pipe belongs to a kind of steel pipe, it is made of the material of stainless steel so called stainless steel pipe. Its main material is 304, 304L, 316, 316L.Because of its corrosion resistance, beautiful appearance and other advantages, th ...

When we talk about the material of steel pipe fittings,we talk the material steel grade,for example,ASTM A234 WPB or A403 WP316L. It is the material information of this fitting,not the raw material steel grade for fittings production.A butt welding steel e ...

Hebei Haihao Group specialized in flange and pipe fittings. Elbow, flange, tee, cross, reducer, etc. all belong to pipe fittings, which widely used in building industry. Elbow is used at pipe turnings; flange is used to connect pipe at the end of pipe. Tee ...

A seamless steel pipe,a kind of long steel, has hollow section without seam. It is made from perforated tubular billets which are made of ingot steel or solid steel pipe and undergoes the process of hot rolling, cold rolling or cold drawn. Due to its hollo ...

ERW pipe (resistance welded pipe) The name ERW is because such stainless steel pipes involve certain types of welding processes such as spot welding and seam welding. Seam welding is usually used when manufacturing round, square and rectangular stainless s ...

Series A and series B are sometimes referred to as British or metric tubes, mainly because of their different outer diameters. The difference between series A and series B refers to the impact temperature in their properties. The impact temperature and the ...

Precision steel tube: hot rolling is relative to cold rolling, which is rolled below the recrystallization temperature, and hot rolling is rolled above the recrystallization temperature. Advantages of precision steel tube rolling at recrystallization tempe ...

Selecting the right type of steel for your project is one of the most important decisions. Before deciding individual material grades, it is also first necessary to decide which type of steel to use, such as carbon steel or stainless steel. This article wi ...