Changsha Xiangjia Metal Materical Co., Ltd.

Corrosion is a major problem in the project, and the quality and life of steel pipes directly affect the entire project. Therefore, the anti-corrosion of the pipeline is very important.  Xiangjia's steel pipes  have great advantages in corrosion resistance: 1 Has good chemical resistance.  2 Good insulation performance and compactness, to prevent corrosion by electrochemistry and stray current.  3 Resistant to bacterial corrosion.  4 It has a certain degree of mechanical strength to prevent mechanical damage during handling and burying.  5 The construction is simple and safe, and meets the requirements of on-site construction.

Domestic  seamless steel pipe  supplied according to chemical composition and mechanical properties, such as the chemical composition of No. 10, 15, 20, 25, 30, 35, 40, 45 and 50 steel, which should meet the requirements of GB/T699-88. Accordance to GB/T8162-87, seamless pipe specifications:  The outer diameter of the hot-rolled pipe is 32～630mm. The wall thickness is 2.5～75mm.  The outer diameter of cold rolled (cold drawn) pipe is 5～200mm. The wall thickness is 2.5-12mm. The weight calculation formula of seamless steel pipe is: m=F×L×ρ m—mass Kg; F—cross-sectional area m2/m; L—length m; ρ—density *Kg/m3 Note: F sectional area calculation method: 1. Square steel  F = a2 2. Steel pipe  F=3.1416×$(D-$)     D—diameter ＄—thickness 3. Steel plate and flat steel    F= a×$          a—width Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe i

SSAW steel pipe   is widely used in water plants, petrochemicals, chemicals, electric power, agricultural irrigation and urban construction. Then how to choose the required type and thickness? 1. Ordinary used type of SSAW steel pipes During the SSAW steel pipe production process, adjust the pressing amount of the squeeze roller to control the welding gap to 1-3 mm and the welding end to be uniform. Common specifications are: outer diameter 219mm, 273mm, 325mm, 377mm, 426mm, 529mm, 630mm, 820mm, 1020mm, 1220mm, 1420mm, 1520mm, 1620mm, 1820mm, 2020mm. 2.What is the common thickness of spiral steel pipe? In the project, SSAW steel pipes with thicknesses of 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm are common. Different pressure values and usage scenarios have different requirements for thickness. According to the specific design of the project, choose the right SSAW steel pipe for you need.

1.   Rectangular tube   are marked with the nominal size and the actual size. The nominal size is an ideal size, and the actual size is the real size of the rectangular tube. Both of them are marked on the tube for the convenience of consumers to compare. 2. Deviation and tolerance of rectangular tube. Tolerance is the allowable deviation size of the square tube itself, and the deviation is a difference between the actual size and the standard size. It is pretty hard to reach the standard size, so some deviations are allowed. 3. The delivery length of the rectangular tube can be divided into ordinary length, fixed-length length and double-length length. As long as the length is within the range of contract, it called the ordinary length, the prescribed length is called the fixed-length length, and the multiples of the rectangular tube single-length length are called the double-length length. 4. The ovality of the rectangular tube. Rectangular tube may has unequal outer diameters. The d

  Structural seamless steel pipes  are good for the processing and use of general structures and mechanical structures. The materials of structural seamless steel pipes are diverse. The materials are carbon steel 20, 45# steel, alloy steel Q345, 20Cr, 40Cr , 20CrMo, 30-35CrMo, 42CrMo, etc. The fluid seamless steel pipes is used to transport fluids. The domestic pipes are mainly made of 10#, 20# carbon steel hot-rolled pipes or cold-drawn pipes. The difference between fluid seamless pipes and structural seamless pipes is that fluid seamless pipes need to be subjected to hydraulic tests one by one, or ultrasonic, eddy current, and magnetic flux leakage testing. In the standard selection of pressure pipeline steel pipes, fluid seamless steel pipes are more suitable. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and

Precision welded pipe   is the result of further processing on the basis of ordinary welded pipe. It is more accurate than the ordinary welded pipe geometry, the weld seam and the inner and outer surfaces of the precision welded pipe are of excellent quality, and the wall thickness is uniform. It is widely used in the chemical industry, textile machinery, aviation, instrumentation, automobile and other industries.  Precision Welded Pipe vs Ordinary Welded Pipe 1. Precision welded pipe geometric dimensions, uniform wall thickness, good steel pipe geometry, small ovality, reliable weld quality, small internal burrs, and smooth outer surface. After the weld heat treatment or protective atmosphere heat treatment, the steel pipe can achieve no oxidation on the surface, stable mechanical properties and uniform metallographic structure. 2. The production cost is much lower than that of the seamless precision steel pipe of the same type. It can be used on some equipment directly or after a sma

What are the calculation methods for the vertical bearing capacity of the  rectangular tube : 1. Calculate the compressive stress, which is the compressive stress generated by the vertical pressure acting on the cross section of the rectangular tube. The pressure (in N) divided by the cross-sectional area of the rectangular tube (in m square). The compressive stress should be less than the allowable stress of the material. 2. Calculate the stability. The tube stability calculation is complicated. It depends on whether the connection method is fixed at both ends or fixed at one end and hinged at the other end. It is estimated that you do not only use 1 column, so it can be simply calculated as a fixed connection at both ends. Simple calculation of critical pressure: P=(4*n*Pi^2*E*I)/[(L/2)^2]. N:The number of columns; pi^2: the second power of the shot; E: modulus of elasticity; I: moment of inertia; and L: column length. Those are simple calculations. Safety factors and seismic loads m