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 ...

Stainless steel tube because of its good mechanical properties, high hardness and high wear resistance and other advantages are widely used in military products parts processing. The surface treatment of this material is carried out after the solid solutio ...

Thinning the thickness of the stainless steel tube can effectively improve the overall thermal conductivity of the stainless steel tube. When choosing a stainless steel tube with a wall thickness of 0.5-0.7mm, from the experimental results, the thermal con ...

Austenitic stainless steel: Containing more than 18% chromium, about 8% nickel and a small amount of molybdenum, titanium, nitrogen and other elements. It has good comprehensive performance and can resist corrosion of various media. Austenite crystal struc ...

Galvanized steel and stainless steel are the most common methods of preventing pipe corrosion.There are the difference between them. (1)Different concepts Galvanizing refers to coating a layer of metal zinc on the surface of steel plate to prevent corrosio ...

When most metals come into contact with certain substances in air or water, chemical changes occur that reduce the integrity of the metal. This process is called corrosion. Among them, materials such as oxygen, sulfur, and salt can cause metal corrosion, a ...

316L stainless steel plate belongs to austenitic stainless steel, this kind of steel has excellent plasticity, patience, corrosion resistance. Due to the addition of Mo element (2% ~ 3%), 316L stainless steel plate not only has excellent pitting resistance ...

Desalination plants are known to be very corrosive because of the high temperatures in the environment. Austenitic stainless steels of the previous 300 series are often the preferred materials for desalination plants. In cases where higher corrosion resist ...

In the past few decades, the severity of corrosion in the oil and gas industry has increased year by year. Because the offshore oil industry continues to push oil exploration deeper, it leads to higher pressure conditions and harsher environments. In addit ...

Distractive tests confirm the mechanical requirements of the manufactured pipe. In Distractive Testing- a sample from the actual material is cut to performed various tests. The tensile test is done to check yield and ultimate tensile of the material. If re ...

The integrity of the flange connection is critical to the pipeline system of the conveying fluid. Whether it is a pipeline system that transports chemical media (such as hydrocarbons) or a water supply pipeline, leaking flange connections will cause seriou ...

Most of the time, plastic processing of metal forgings is a series of processes that a simple-shape blank turns into the final product with required shape and size via plastic deformation. Good metal plasticity facilitates plastic forming, and from the ang ...

The instrument which uses the method of ultrasonic testing is called ultrasonic flaw detector. Its principle is: when the ultrasonic wave propagates in the tested material, the acoustic characteristics of the material and the change of the internal structu ...

As supplier of piping goods,we often use post heating of weld and PWHT in production.What is the difference between them? Prefabrication pipeline In post heating, you raised the temperature of the weld joint to a predetermined temperature range (usually 25 ...