SSAW Pipe

　　GENERAL PROPERTIES 　　Alloy 304L a T-300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel. Type 304L has a carbon maximum is 0.030. It is the standard “18/8 stainless” that is commonly found in pans and cooking tools. Alloys 304L is the most versatile and widely used alloy in the stainless steel family. Ideal for a wide variety of home and commercial applications, Alloys 304L exhibits excellent corrosion resistance and has a high ease of fabrication, outstanding formability. The austenitic stainless steels are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. 　　Specifications: UNS S30403 　　Application of Alloy steel pipe 　　Alloy 304L Stainless Steel pipe is used in a wide variety of home and commercial applications, including: 　　Food processing equipment, particularly in beer brewing, milk processing, and wine making 　　Kitchen benches, sinks, troughs, equipm...

　　Cold rolled seamless pipes(GB3639-2000)are cold drawn or cold rolled precision seamless steel pipes with high accuracy of the dimension and good finish of the surface used for the machinery and hydraulic equipment. The cold rolled process refers to the method adopted to process the steel plates or strips into various types of steel products by cold working processes such as the cold bend and cold drawn processes. Cold rolled seamless pipes not only include general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes , stainless steel pipes, petroleum cracking steel pipes, but also include carbon steel pipes with thin walls, alloy steel pipes with thin walls, stainless steel pipes with thin walls and special-shaped steel pipes. The hot rolled seamless pipes usually have outer diameter larger than 32mm and wall thickness between 2.5mm to 75mm; the cold rolled seamless pipes usually have the outer diameter less than 6mm and wall th...

　　Before the pressure pipeline nondestructive testing, visual inspection of welds shall comply with the requirements. Pressure pipe weld appearance and surface quality of welded joints general requirements are as follows: welding should look good shape, width of each side groove edge 2mm overshadowed appropriate. Fillet weld leg height should meet the design requirements, the shape should be smooth transition. 　　(1) Do not allow cracks, lack of fusion, pores, slag, spatter exist. 　　(2) The design temperature is below -29 degrees pipes, stainless steel and hardened alloy steel pipes tend to be larger weld surface, without undercut. Other material pipe weld undercut depth should be greater than 0.5mm, continuous undercut length should not exceed 100mm, and both sides of the weld undercut always grow up to 10 percent of the entire length of the weld. 　　(3) Not be lower than the surface of the weld surface of the pipe. Weld reinforcement and no more than 3mm, (the maximum width of we...

　　 Carbon steel pipe is made with steel ingot or solid round steel and processed into a tubular billet by perforation, than finished with hot and cold rolled. So it can be divided into hot rolled steel pipe and cold rolled steel pipe two categories. 　　Hot rolled steel pipe can be divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking tube, geological steel pipe and others. 　　Cold rolled steel pipe not only included general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking tube, but also included carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless thin-walled steel pipe and profiled steel pipe. 　　According to the classification of use, we can divide the carbon steel pipe into below 5 types: 　　1.Pipeline tube: Such as water or gas tube, seamless steam pi...

　　According to the manufacturer's technical requirements, ASTM A213 P11 alloy steel pipe has several methods to measure the length.Next I will introduce four main methods of measuring steel pipe length. 　　1, Grating Length Measurement 　　The basic principle is that two fixed-length grating scales are respectively arranged on the two outer ends of the steel pipe, and the grating rod is driven by the rodless cylinder to be close to the two ends of the steel pipe to measure the length of the A213 P11 alloy steel pipe by using light interference phenomenon. 　　Characterized by high accuracy. However, grating scales are expensive and difficult to maintain, and are sensitive to the effects of dust and site vibrations. 　　2, The Camera Measured Length. 　　Camera length measurement is the use of image processing to achieve A213 P11 alloy steel pipe length measurement, the principle is in a section of steel pipe roller conveyor to install a series of equidistant photoelectric switch, ...

    Alloy steel pipe is a kind of material used for the carriage of pipeline and oil, and the other is a more fluid transport need to use the alloy steel pipe materials, so we can know this pipeline transport of materials has a very wide range of applications.     The installation of the pipe material is the first step in using process, said alloy steel pipe the material environment adaptability is strong, function and purpose and are very broad, but we still need to pay attention to the installation environment.     After installing the best is to check the installation if there is a problem or its installation is dense enough, after meet this requirement, can smoothly into the use of.     Be installed before installation and use of alloy steel pipe inspection is must be ready before we use the work, and only in this way we can be better to put material into use, and gain more benefit from use.