Changsha Xiangjia Metal Materical Co., Ltd.

1. Under the premise of stable stacking and safety, stacking according to varieties and specifications should be achieved. Different types of materials should be stacked separately to prevent muddling and mutual erosion;  　　 2. It is forbidden to store items that are corrosive to steel around the  ssaw steel pipe  stack;  　　 3. The bottom of the ssaw steel pipe should be high, firm and flat to prevent the material from being damp or deformed;  　　 4. The same materials are stacked separately according to the storage order;  　 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 and competitive duration of our products.

  1 The quality inspection and acceptance of   LSAW  shall be carried out by the technical quality supervision department of the supplier.  2 The supplier must ensure that the delivered LSAW meets the requirements of the corresponding product standard. The purchaser has the right to inspect and accept according to the corresponding product standards.  3 LSAW should be submitted for acceptance in batches, and the batching rules should meet the requirements of the corresponding product standards.  4 The inspection items, sampling quantity, sampling location and test method of LSAW shall be in accordance with the provisions of the corresponding product standards.  5 LSAW test results, when a certain item does not meet the requirements of the product standard, the unqualified shall be picked out, and a double number of samples shall be taken from the same batch of LSAW, and the unqualified item shall be re-inspected.   Changsha Xiangjia Metal Materical Co., Ltd.  the Steel Pipe Division of

First of all, we must understand what is pickling: the method of using acid solution to remove oxide scale and rust on the surface of steel is called pickling. Acids for pickling include sulfuric acid, hydrochloric acid, phosphoric acid and mixed acids.  　　   The pickling process is to remove the surface oxide scale, and then go through lubrication treatment (carbon steel-phosphorous saponification, stainless steel-butter lime, copper and aluminum pipe-oiling), using the old technology-copper plating), and then drawing and deep processing. If the  seamless steel pipe  is not pickled, there may be oxides and oil stains on the surface, and the nuclear energy of the phosphating solution cannot remove them, and the quality of phosphating will be reduced. Moreover, in the manufacturing process of seamless steel pipe, after many processes, if you are not careful, it will leave scars on the surface of seamless steel pipe, which will reduce the corrosion resistance of parts and directly affect

After the  seamless steel pipe  is finished, it is sent to the inspection department for product quality inspection, which is an important measure to ensure the quality of the seamless steel pipe from the factory. The inspection standards and content are stipulated by national standards and some standards or technical conditions.  　   Seamless steel pipe inspection can be spot check and all. Sampling inspection is generally to determine the mechanical properties, internal organization and chemical composition of seamless steel pipes. In addition to sampling inspections in a batch of seamless steel pipes, seamless steel pipes for some important uses are sometimes subject to all inspections. In addition, hot-rolled seamless steel pipes are subject to process tests such as flattening, bending, crimping, and flaring, as well as hydraulic tests according to standard requirements.     Changsha Xiangjia Metal Materical Co., Ltd.   the Steel Pipe Division of ADTO GROUP, is one of the leading m

Induction welding is to put one or more turns of induction coil outside the   welded steel pipe . The effect of multi-turn is better than single-turn, but it is more difficult to manufacture and install multi-turn induction coil. If the distance between the induction coil and the steel pipe surface is small, the efficiency is higher, but it is easy to cause electric discharge between the induction coil and the pipe.  Generally, it is advisable to keep the induction coil 5-8 mm away from the surface of the steel pipe. When using induction welding, since the induction coil is not in contact with the steel plate, there is no wear, and the induction current is relatively stable, which ensures the stability during welding. The surface quality of the steel pipe during welding is good, and the weld seam is flat. For precision pipes, induction welding is basically used.   Changsha Xiangjia Metal Materical Co., Ltd.   the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of

Contact welding involves a pair of copper electrodes in contact with the two sides of the steel pipe being welded, and the induced current has good penetration. The two effects of high-frequency current are maximized due to the direct contact between the copper electrode and the steel plate, so the welding efficiency of contact welding High and low power consumption, it is widely used in the production of high-speed and low-precision pipes. Contact welding is generally required when producing particularly   ERW steel pipes .   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 and competitive duration of our products.

With the in-depth research of  LSAW and the extension of application fields, it is expected that in the future, the market demand for LSAW will continue to increase gradually, and the market capacity will continue to increase. The reasons are as follows:  　 　 1. Large-scale infrastructure construction stimulates domestic demand and brings stainless steel welded pipes such as highways, railways, and water conservancy;  　　 2. The rigid requirements of traditional application fields are the expansion of application fields brought about by the maturity of application technology;  　　   With the continuous adjustment of the market and the growth of demand, LSAW will usher in a new situation. Enterprises should continue to make new attempts and innovations, find breakthroughs, and be fully prepared for future development. 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 manufa

  Seamless steel pipe  pipe connection: After the plastic repair is completed, the pipe and the pipe fittings are connected and installed. During the connection process, rubber pads are added between the flanges, and the bolts are tightened to the sealed state. 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 and competitive duration of our products.

  Seamless steel pipe  cutting: According to the actual length of the pipeline, the pipe should be cut with a metal saw or a toothless saw. When water welding is used in the cutting process, the raw materials must be protected. When cutting, fire-resistant and heat-resistant materials should be used as baffles at the two ends of the fracture to catch the sparks and hot molten iron that fall during cutting to protect the raw materials. The original plastic layer. 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 and competitive duration of our products.