Changsha Xiangjia Metal Materical Co., Ltd.

22*4  Precision bright seamless steel pipe  is made by high-precision steel pipe processed by cold drawing or hot rolling, and it is a kind of precision seamless pipe. It has high thermal strength, oxidation resistance and tissue stability, which can be used as 580℃ boiler and pressure vessels. Bright steel pipe mechanical properties: tensile strength σb (MPa): 540～687; Yield strength σs (MPa): ≥314; Elongation δ5 (%): ≥18; Sample size: longitudinal mechanical properties of the sample. 22*4 Precision bright seamless steel pipe are widely used in production and processing, such as cylinders and oil cylinders. 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 sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality a...

1. Adjusting the height of the vertical roller to improve the accuracy of  LSAW steel pipes  in producting; 2. Add some pads of different thickness under the lower roll bearing seat of LSAW steel pipe to adjust the accuracy; 3. If the device is pressed on the bottom of LSAW steel pipe, the accuracy can be adjusted by the press on the device; 4. For the frame of the LSAW steel pipe manufacturer, the single frame and their bases, different thicknesses should be added; 5. Choose the right bottom diameter of the lower rollers for frame. We are specializes in the production of spiral steel pipes, etc., has been strictly controlling in quality, and has been deeply supported and trusted by customers for many years.

  1.         Cleaning. Use solvents and emulsions to clean the surface of  SSAW steel pipe  to remove oil, grease, dust, smoothing agent and similar organic matter.   2.         Spray (throw) to remove rust. Generally speaking, shot blasting (sand) rust removal is mainly used for the internal and external surface treatment of the SSAW steel pipe, and shot blasting (sand) rust removal is mainly used for the external surface treatment of the SSAW steel pipe.  　   　 3.         Derusting and pickling. First, use wire brushes and other things to polish the surface of the SSAW steel pipe, which can remove loose or warped oxide scale, rust, welding slag, etc. Chemical cleaning can certainly make the appearance reach a certain degree of cleanliness and roughness, but its anchor lines are shallow and easily pollute the situation.   Changsha Xiangjia Metal Ma...

The hazards of the welding spatter of the  rectangular steel pipe : reducing the welding deposition efficiency and reducing the welding productivity; the spatter is easy to adhere to the weldment and the nozzle, which affects the welding quality, makes the welding labor conditions worse and increases the cleaning time; the welding pool unstable, leading to defects such as rough weld shape. How to prevent splashing from happening? In the following words, we will introduce you five measures. 1. In rectangular steel pipe arc welding, there is a rule between the spatter rate of each diameter welding wire and the welding current: the spatter rate in the small current area is small, and the spatter rate in the high current area is also small, and the middle area has the largest splash rate. Therefore, when selecting welding current, avoid current areas with high spatter rate as much as possible. 2. The extension length of the welding wire should be short, which can reduce the welding spa...

 The formula for calculating the weight of the national standard  galvanized rectangular steel pipe . According to the formula, the amount can be calculated. Let's take a look: 4 x wall thickness x (side length-wall thickness) x 7.85 The numerical value, side length and wall thickness are all in mm, and the numerical value can be substituted into the formula. The result is the weight per meter of the national standard galvanized rectangular steel pipe in grams.  E.g:According to the above formula, the weight per meter of 30mm x 30mm x 2.5mm galvanized rectangular steel pipe can be calculated as: 4 x 2.5 x (30-2.5) x 7.85 = 275 x 7.85 = 2158.75 grams, which is 2.16 kg When the wall thickness and side length are in mm as the unit, 4 x wall thickness x (side length-wall thickness) is calculated as the volume of the rectangular steel pipe per meter length, in cubic centimeters, multiplied by the specific gravity of iron per meter The cubic centimeter is 7.85 grams, which is t...

The maximum wall thickness of the  LSAW steel pipe  can be 50mm, the press of the pressure is limited, and if you need a steel pipe which wall thickness exceeds 50mm, seamless steel pipe can be the only choice. The minimum wall thickness of LSAW steel pipes can be produced to 8mm. The first step is to press the plate into a round shape when produce LSAW steel pipes. Therefore, there are requirement on the wall thickness of the steel plate. If the steel plate is too thin, the press cannot crush the steel plate or it can cause deformation, or pressed into an ellipse. So that minimum wall thickness LSAW steel pipe can be produced is 8mm. The wall thickness is less than 8mm using coiled pipes. The coiled pipes are made by T-welding, which are all section by section. The stitching is different from the straight stitch. Changsha Xiangjia Metal Materical Co., Ltd.  is the leading manufacture in China, has been insisting on product quality as the center and inheriting qu...

 Insulation steel pipe is a steel pipe that has been processed by heat preservation technology and under the action of different working environments and external media to ensure that the internal temperature and surface temperature of the working steel pipe meet or meet the requirements of use. Composition of insulation steel pipe : 1. Outer-protected steel pipe: protect the insulation layer from groundwater erosion, support the pipe working and withstand an external load, to work in the right way. 2. Anti-corrosion layer: protect the outer steel pipe from corrosive substances and extend the service life of the steel pipe. 3. Drag-reducing layer: to ensure the free movement of the working steel pipe during thermal expansion and contraction. 4. Polyurethane foam layer: to ensure the temperature of the medium, and to ensure that the surface of the outer protective tube maintains normal temperature. 5. Barrier and reflective layer: to ensure that the organic foam material does not en...

Domestic materials are Q235A, Q235B, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, 16Mn, 20 #, Q345, L245, L290, X42, X46, X70, X80 The billet used in the  LSAW steel pipe  is steel plate or strip steel. LSAW steel pipe divided into the following varieties due to different materials and uses: GB / T3091-2008 (Welded steel pipe for low-pressure fluid transportation). Mainly used for conveying water, gas, air, oil, heating hot water or steam and other low-pressure fluids and other use pipes. GB / T14291-2006 (Welding steel pipes for mine fluid transportation). Mainly used for LSAW steel pipes for mine pressure, drainage, shaft gas discharge. GB / T12770-2002 (stainless steel welded steel pipe for mechanical structure). Mainly used in machinery, automobiles, bicycles, furniture, hotel and restaurant decoration and other mechanical parts and structural parts. GB / T12771-1991 (stainless steel welded steel pipe for fluid transportation). Mainly used to transpo...