ERW Steel Pipe

　　The production method of seamless steel pipe is roughly divided into a cross-rolling method (Mengnesmann method) and an extrusion method. The cross-rolling method (Mennesmann method) is to first pierce the tube with a diagonal roll and then extend it with a rolling mill. This method has a high production speed, but has high requirements on the processability of the tube blank, and is mainly suitable for the production of carbon steel and low alloy steel tubes. The extrusion method uses a piercing machine to perforate a tube blank or a steel ingot, and then extrudes it into a steel tube by an extruder. This method is less efficient than the cross-rolling method and is suitable for producing a high-strength alloy steel tube. 　　Both the cross-rolling method and the extrusion method must first heat the tube blank or the ingot, and the produced steel tube is called a hot rolled tube. Steel pipes produced by hot working can sometimes be cold worked as needed. There are two methods for co...

　　The production method of seamless steel pipe is roughly divided into a cross-rolling method (Mengnesmann method) and an extrusion method. The cross-rolling method (Mennesmann method) is to first pierce the tube with a diagonal roll and then extend it with a rolling mill. This method has a high production speed, but has high requirements on the processability of the tube blank, and is mainly suitable for the production of carbon steel and low alloy steel tubes. The extrusion method uses a piercing machine to perforate a tube blank or a steel ingot, and then extrudes it into a steel tube by an extruder. This method is less efficient than the cross-rolling method and is suitable for producing a high-strength alloy steel tube. 　　Both the cross-rolling method and the extrusion method must first heat the tube blank or the ingot, and the produced steel tube is called a hot rolled tube. Steel pipes produced by hot working can sometimes be cold worked as needed. There are two methods for co...

　　 Welded steel pipe is bent with steel or steel plate is round, square and other shapes and then welded into the surface of the seam with the steel pipe. Common types of welded steel pipe are the following: 　　General pipe, used to transport low-pressure fluid, easy to weld the other soft steel manufacturing. Steel pipe to pipe and thick steel pipe specifications with the nominal mouth of the water pressure, bending, flattening and other experiments, the surface quality has certain requirements, usually the length of the delivery of 4-10m is actually different, the pipe according to the provisions of the wall thickness Two kinds of steel, according to the thread and no thread two. 　　Roller, for belt conveyor roller welding steel pipe, the general water pressure and flattening test. 　　Metric welded pipe, specifications with a seamless tube form, with ordinary carbon steel, high quality carbon steel or Cape can be low-alloy steel tropical, cold belt welding, or with a tropical wel...

　　The seamless pipe line is mainly used for pumping high pressure oil and gas near the wellhead. As the corrosion problem of hydrogen sulfide is becoming more and more serious, the development of anti-sulfur seamless pipeline tube is urgent, and the anti-sulfur performance is the key. Discusses the influence of hydrogen induced crack (HIC) resistance of medium and material factors, Cu, Ni join can improve the performance of seamless line pipe material HTC reduce the S content in the steel, by spraying calcium silicon powder also can reduce the sensitivity of hydrogen bubble. 　　With the development of oil and gas exploration, the problem of hydrogen sulphide corrosion is very acute because of the increasing amount of oil and gas Wells in the complex and sulfur environment. In recent years, there has been an increase in demand for the seamless pipe line. The seamless pipeline pipe is mainly used for pumping high pressure oil and gas near the wellhead, and it is made by seamless tube p...

　　A tube is a closed shape used to perform some structural function. The shape can be round, square, rectangular or whatever can be designed and manufactured for a particular application. Round tubes differ from pipes in the way they are dimensioned. A 1 1/2-inch round tube has a 1 1/2-inch outside diameter. A 1 1/2-inch round pipe has a 1 1/2-inch inside diameter. The reason being that the outside of tubes is important for structures, however the inside of pipes is used for fluid flow. 　 　 Welded Steel Tube 　　Welded steel tubing is made from either hot-rolled or cold-rolled steel that is provided to the tubing manufacturer in coils. The coil may be processed to remove scale, improve finish, amend heat treatment or in other ways to achieve the specified end product. The coil is then run through grooved rollers until the shape has been formed and the free edges are correctly spaced for welding. 　　The edges of the tube are butt welded together, generally with electrical resistance ...

　　A tube is a closed shape used to perform some structural function. The shape can be round, square, rectangular or whatever can be designed and manufactured for a particular application. Round tubes differ from pipes in the way they are dimensioned. A 1 1/2-inch round tube has a 1 1/2-inch outside diameter. A 1 1/2-inch round pipe has a 1 1/2-inch inside diameter. The reason being that the outside of tubes is important for structures, however the inside of pipes is used for fluid flow. 　　 Seamless Steel Tube 　　The manufacture of seamless steel tube typically begins in an electric arc furnace. The steel is then cast as an ingot or continuously cast as a bloom. The bloom is then rolled into a billet. The solid billet becomes a tube by being drawn over a piercing tool by two external rollers set at an angle to each other that move the billet. At this point a “rough” tube has been formed. 　　The rough tube is put through an elongator, in which three rollers and an internal mandrel sh...

　　Stainless welded steel pipe is used for many different applications because of its non-corrosive surface, light weight, ease of cleaning and looks. You can use welded steel pipe well, because of stainless welded steel pipe is durable nature; there are few precautions to take when handling stainless welded steel pipe. There are, nevertheless, some suggestions to stick to be positive you get the most out of people pipes. The first step, you can wipe the stainless metal pipe along with a clear rag and cozy drinking water to eliminate any dirt and essential oil from the surface area. Dirt and essential oil can influence the corrosiveness of the pipes, so it is crucial to eliminate them prior to set up. Soon after the pipe has been wiped along, rinse it with drinking water and dried out the pipe with a clear cloth. 　　Then put on cloth or rubber gloves when managing stainless metal pipes to stay clear of leaving finger essential oil on the surface area of the pipe. If any finger essentia...