Changsha Xiangjia Metal Materical Co., Ltd.

  High-pressure seamless steel pipe   is a kind of seamless pipe. The manufacturing method is the same as seamless pipes, but there are strict requirements on the steel grades that used to produce steel pipes. According to the operating temperature, it can be divided into two types: ordinary boiler tubes and high-pressure boiler tubes. ①If the service temperature of high-pressure seamless steel pipes is below 450℃. Domestic pipes should be made of No. 10 and No. 20 carbon steel hot-rolled pipes or cold-drawn pipes. ②High-pressure seamless steel pipes are often used in high temperature. The pipes will be oxidized and corroded under the action of high-temperature flue gas and water vapor. The steel pipe is required to have high durable strength, high oxidation and corrosion resistance, and good organizational stability. 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 manu

Different types of   casing pipe   that used in the process of oil extraction: The surface oil casing pipe protects the drilling to avoid contamination by shallow water and gas layers and support the wellhead equipment.Usually the outer diameter is 114.3 mm to 508 mm Technical oil casing pipe separates the pressure at different levels so that the drilling fluid can circulate normally and protect the production casing pipe. Also to install anti-burst devices, leak-proof devices and tail pipes in the well. Oil casing pipe leads the oil from the reservoir layer below the surface. It is used to protect wells and stratify drilling mud.

SSAW steel pipe has the characteristics of pollution-free and low noise in terms of production efficiency and economic benefits, and does not produce waste water or waste gas. Circulating water cooling is used in production, which is energy-saving and environmentally friendly, and saves labor.   In terms of application, with the improvement of SSAW steel pipe quality and non-destructive testing reliability, SSAW steel pipe has become more and more widely used.   The welding process of SSAW steel pipe has advantages in many aspects, and it has a wide adaptability to the material of the tube blank and the size of the steel tube.   SSAW steel pipe not only improves the welding speed, but also obtains a weld with a small heat-affected zone and good penetration.   In terms of quality, the weld quality of SSAW steel pipe is good, the internal and external burrs are small, the welding speed is high, and the power consumption is small.   Changsha Xiangjia Metal Materical Co., Ltd.   the Steel

Right-angle square tube   is a kind of special square tube, which is different from ordinary arc square tube for its R angle is close to 0. It is a square tube rolled from a round tube. Right-angled square tube whose R angle is not more than 1 times of the wall thickness. Right-angle square tube: when the wall thickness＜3mm, the R angle is＜1mm; When the wall thickness is 3-8mm, the R angle is＜2mm; When the wall thickness is＞8mm, the R angle is ＜ 3mm, which is a sharp rectangular tube. Classify according to the cross-sectional shape , square right-angled square tube and rectangular right-angled square tube.

The expression of   steel pipe   diameter should meet the following requirements: 1. For water and gas transportation steel pipes (galvanized or non-galvanized), cast iron pipes and other kinds line pipes, the pipe diameter should be expressed by the nominal diameter  DN (such as DN15, DN50); 2. For seamless steel pipes, welded steel pipes (straight seam or spiral seam), copper pipes, stainless steel pipes and other pipes, the pipe diameter should be expressed in terms of outer diameter D×wall thickness (such as D108×4, D159×4.5, etc.); 3. For reinforced concrete (or concrete) pipes, clay pipes, acid-resistant ceramic pipes, cylinder tile pipes, etc., the pipe diameter should be expressed by the inner diameter d (such as d230, d380, etc.); 4. For plastic pipes, the pipe diameter should be expressed accordance with the product standard method; 5. When the design uses the nominal diameter DN to indicate the pipe diameter, there should be a comparison table between the nominal diameter DN