Changsha Xiangjia Metal Materical Co., Ltd.

  Spiral pipe   groove connection is also called clamp connection. Due to its advanced technology, it has become the first choice for liquid and gas pipeline connection. Grooved fittings include two categories: 1. The pipe fittings that play the role of connection and sealing include rigid joints, flexible joints, mechanical tee and groove flanges; 2. The pipe fittings that play the role of connection and transition include elbow, tee, cross, reducer, blind plate, spiral welded pipe, etc. The application of grooved pipe connection technology makes the complex pipe connection process simple, fast and convenient. A big step forward in plumbing technology. It is beneficial to the protection of construction, with good system stability, convenient maintenance, labor-saving and time-saving, so it has good economic benefits. Changsha Xiangjia Metal Materical Co., Ltd.  is professional manufacture in SSAW steel pipe with various grades and sizes. Years of production experience and manufacturin

Helical welded pipe   is a pipe in which the welds are spirally distributed on the pipe. It used for conveying pipelines, pipe piles and structural pipes. Product specification: outer diameter 300～3660mm, wall thickness 3.2～25.4mm. The characteristics of spiral welded pipe: (1) Pipes with various outer diameters can be produced from the same width strips; (2) The straightness of the pipe is good, the size is accurate, and the inner and outer spiral welds increase the rigidity of the pipe body, so there is no need for sizing and straightening processes after welding; (3) It is easy to realize mechanization, automation and continuous production; (4) Compared with other equipment of similar scale, its size, the land occupation and investment are small;  (5) Compared with the straight seam welded pipe of the same size, the welding seam per unit length of the pipe is longer. Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacture

1. The calculation method of the ability to withstand the pressure based on the outer diameter and wall thickness of the   seamless steel pipe   (the tensile strength of different materials of the steel pipe is different) Pressure = (wall thickness * 2 * tensile strength of steel pipe material) / (outer diameter * coefficient) 2. Calculate the wall thickness by knowing the outer diameter and pressure of the seamless steel pipe: Wall thickness = (pressure * outer diameter * coefficient) / (2 * tensile strength of steel pipe material) 3. The method of expressing the pressure coefficient of the steel pipe: Pressure P<7Mpa Coefficient S=8 7<Pipe pressure P<17.5 Coefficient S=6 Pressure P>17.5 Coefficient S=4 Here are the calculation formula of water pressure value for seamless steel pipe. Click here to know " Precision Seamless Steel Pipe " .

Standard classification of   submerged arc welded steel pipe : Spiral seam submerged arc welded steel pipe (SY5036-83) for pressurized fluid transportation is mainly used for pipelines for transporting oil and natural gas; Spiral seam high frequency welded steel pipe for pressurized fluid transportation (SY5038-83), welded by high frequency lap welding, spiral seam high frequency welded steel pipe for pressurized fluid transportation. The steel pipe has strong pressure bearing capacity and good plasticity, which is convenient for welding and processing; Spiral seam submerged arc welded steel pipe (SY5037-83) for low-pressure fluid transportation, made by double-sided automatic submerged arc welding or single-sided welding, used for low-pressure fluid transportation such as water, gas, air and steam.

Seamless steel pipes   and thick steel plates are have a little magnetic, and even if they come into contact with strong magnet raw materials, the magnetic loss is not large. The magnetism of steel pipes is harm to electric welding. So demagnetize is nessary. The following methods can be used to demagnetize: 1. Physics to demagnetize, wind an electromagnetic coil around the weld and connect to electronics to demagnetize; 2. Turn over the seamless steel pipe during electric welding and try to change the positive and negative electrodes; 3. If the processing technology allows, it can be heated according to the regulations in the raw material and welding method manual. Heatting the welding seam of pipe to 700 ℃ to demagnetize. This method is good but it will reduce the physical properties. 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 pip

  1.       The easiest way is to observe the surface quality of the  SSAW steel pipe . The surface quality of the inferior SSAW steel pipe is relatively poor, and there are problems such as pitting, knots, and unevenness. 2.       Secondly, we should also pay attention to observe whether there are scratches and cracks on the surface of the SSAW steel pipe. If the above phenomenon occurs, it means that the SSAW steel pipe is of inferior quality.   3.       When observing, we also need to pay attention to the color of SSAW steel pipe. For SSAW steel pipe that is light red or similar to pig iron color, it cannot be selected. A good SSAW steel pipe needs to have a metallic luster.   4.       The cross-section of high-quality SSAW steel pipe is relatively neat, while the inferior SSAW steel pipe has the phenomenon of meat falling off due to the material, so it is uneven.   Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers

The bearing pressure of the pipeline is increasing and it is nessary to extended the service life of the pipeline, so the development direction of the   spiral welded pipe   is: 1. Produce large-diameter thick-walled pipes to improve pressure resistance; 2. Design and produce steel pipes with new structures, such as double-layer spiral welded pipes, which double-layer pipes are welded with strip steel whose thickness is half of the pipe wall and the strength is higher than that of single-layer pipes of the same thickness; 3. Develop new steel grades, improve the technical level of smelting process and the strength, toughness and welding performance of the pipe; 4. Develop coated pipes and coat the inner wall of the pipe with an anti-corrosion layer, which can not only prolong the service life, but also improve the smoothness of the inner wall, reduce fluid friction resistance. There are the development of spiral welded steel pipe, welcome to click here to know more  the production proc

Precision seamless steel pipe   is a high-precision steel pipe processed by cold drawing or hot rolling. It is used to produce pneumatic or hydraulic products, such as air cylinders or oil cylinders. The chemical composition of precision seamless steel pipes includes carbon C, silicon Si, manganese Mn, sulfur S, phosphorus P, and chromium Cr. Features of precision seamless steel pipe 1. The outer diameter is small. 2. High precision can be used for small batch production. 3. The cold-drawn precision seamless pipe has high precision and good look. 4. The horizontal of the steel pipe is complicated. 5. The performance of the steel pipe is superior, and the metal is denser. 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,