SSAW Pipe

The choice of water supply pipes is very important. In the past, most of the pipes used for water supply were plastic pipes, composite pipes and copper pipes. However, if it is used for a long time, problems will gradually appear, such as water leakage, impurities, unsanitary and so on. Among many materials, it is necessary to choose economical, durable and safe water supply pipes. Nowadays, stainless steel water supply pipes are used as new pipe materials, and their development momentum is strong. Then someone will ask, is the 304 stainless steel water supply pipe easy to use? 1. Corrosion resistance One of the most prominent characteristics of 304 stainless steel water supply pipes is corrosion resistance, not only resistant to atmospheric corrosion, but also resistant to water flow corrosion. After the stainless steel tube is in contact with the atmosphere, a passivation film will be formed on the surface to effectively prevent further oxidation reactions. Stainless steel pipes are ...

Stainless steel seamless pipe is a long strip of steel with a hollow section and no seams around it. The thicker the wall thickness of the stainless steel seamless pipe, the more economical and practical it is, and the thinner the wall thickness, the higher its processing cost will be. Stainless steel seamless pipes are very similar to cs seamless pipes in appearance, and they need to be identified when they are used. Identification of stainless steel seamless pipe 1. Magnetic test The magnetic test is the easiest way to distinguish annealed austenitic stainless steel from ferritic stainless steel. Austenitic stainless steel is non-material magnetic steel, but after cold working under atmospheric pressure, it will have a slight magnetism, but pure chromium stainless steel and low alloy stainless steel are all strong magnetic steel. 2. Nitric acid point test A notable feature of stainless steel pipe is its inherent corrosion resistance to concentrated nitric acid and dilute nitric acid....

Products: Stainless steel pipe Project location: Africa Standard and material:ASTM A312 316L Purpose: Water transmission Inquiry time:2022.03.01 Order time:2022.03.07 Shipping time:2022.3.14 Arrival time:2022.3.21 Xinyue has decades of project supply experience, so it is crucial to have a deep understanding of the urgency of the project construction time and the timeliness of the arrival of goods. In order to meet the urgent arrival needs of some projects, Xinyue developed a mature air transportation service system, which can meet the needs of timely delivery and rapid arrival. At the beginning of March 2022, Xinyue received a small amount of stainless steel demand from African customers, but the delivery time was very special, and the goods needed to reach the destination within 25 days. After comprehensive consideration, Xinyue recommended air transportation to customers, and quickly locked it in. The last few flights. Air freight has very strict requirements on the length of the goo...

 　　1. Grinding wheel cutting: This is the more commonly used method at present, that is, cutting with a grinder, but there will be more burrs on the pipe port after cutting out. If a fully automatic stainless steel pipe end C burr removal machine can be used in conjunction with the cost cheaper. 　　2. Wire cutting: It is the use of wire cutting and fast-moving wire, so that the cutting can meet the requirements of the quality of the incision, but it should be noted that the color of the pipe end will change after cutting, and the grinding and polishing treatment method is required to achieve the desired effect. 　　3. Metal circular saw cutting: this cut is better, and can achieve several simultaneous cutting, but the chips easily stick to the props, so you need to be careful when buying saw blades. 　　4. Rolling blade chipless pipe cutting machine: smooth cut without sawtooth, suitable for small and medium-sized enterprises. The disadvantage is that auxiliary devices need to be added,...

　　Based on experience, we describe several common rust conditions of stainless steel pipes as follows: 　　First, stainless steel has peeling trachoma and other rust. Substandard materials will cause rust. 　　Second, the annealed stainless steel strip becomes black, and the ammonia leak from the perforation of the furnace tube will cause rust. 　　Third, the welding seam of the stainless steel control pipe factory is rough, and the black line will cause rust. 　　Fourth, do not pay attention to the protection of stainless steel pipes during transportation, mix stainless steel pipes with chemical products that can pollute and corrode, or rainy transportation to allow two waters to penetrate into the packaging film will cause rust. 　　Fifth, when the processing manufacturer cuts stainless steel or iron when installing and manufacturing the product, splashing iron filings on the surface of the stainless steel pipe may cause rust. 　　Sixth, the use of users in highly polluted areas (su...

　　Cold rolling of stainless steel engineering pipe refers to cold-drawing, cold-bending, cold-drawing and other cold processing of steel strips into stainless steel pipes at room temperature. Advantages: fast forming speed, high output, and without damaging the coating of stainless steel pipes, can be made into a variety of cross-section open forms to meet the needs of the use conditions; cold rolling can cause large plastic deformation of stainless steel pipes, thereby improving The yield point of the stainless steel tube. 　　Disadvantages of cold-rolling stainless steel engineering tubes: Although there is no thermal plastic compression during the forming process, residual stress still exists in the section, which will affect the overall and local buckling characteristics of stainless steel tubes. 　　Advantages of stainless steel engineering pipe hot rolling: It can destroy the casting structure of steel ingots, refine the grains of steel, and remove the defects of microstructure,...

　　As a consumer, what is more intuitive to see is the surface brightness of stainless steel pipes . The stainless steel decorative pipe is made of 2B stainless steel coil before molding. The surface of the stainless steel welded pipe after molding is smooth. It is also commonly known in the industry as a matte surface. This surface is smooth and shiny, showing the original color of the metal. After processing by the polishing equipment (180 ～ 600 # polishing wheel), the matte surface (round sand / straight wire) can be obtained, also known as matte surface, bright surface and highlight and mirror surface effect. 　　Under normal circumstances, the mirror effect of stainless steel tubes is only a sign of high brightness. Only the grinding and polishing of stainless steel plates can achieve a true mirror surface. The surface treatment industry of stainless steel decorative tube is generally divided into two types: wire drawing and bright surface, which is also currently suitable for the ...

　　Welded stainless steel pipe applications can include anything from medical equipment to offshore drilling towers. Selecting the right alloy is one of the ways in which you can meet the specific requirements of your application and also guarantee job success. Depending on the elements of the alloy, you can improve the properties of your tube; from improving its ductility, to increasing its resistance to corrosion. Here is a summary of some of the most common alloy elements, including the ways in which their chemicals affect the properties of a tube: 　　Nickel improves the ductility of the alloy 　　Nickel is the backbone of the Incoloy, Inconel and Monel alloy families and is an additive in austenitic stainless steels. By creating a face-centered cubic crystal structure (FCC), nickel increases the ductility of the alloys and constitutes an important component in metals subjected to plastic deformation. In general, austenitic steels will exhibit impressive ductility properties with o...

　　Cold rolled seamless pipes(GB3639-2000)are cold drawn or cold rolled precision seamless steel pipes with high accuracy of the dimension and good finish of the surface used for the machinery and hydraulic equipment. The cold rolled process refers to the method adopted to process the steel plates or strips into various types of steel products by cold working processes such as the cold bend and cold drawn processes. Cold rolled seamless pipes not only include general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes , stainless steel pipes, petroleum cracking steel pipes, but also include carbon steel pipes with thin walls, alloy steel pipes with thin walls, stainless steel pipes with thin walls and special-shaped steel pipes. The hot rolled seamless pipes usually have outer diameter larger than 32mm and wall thickness between 2.5mm to 75mm; the cold rolled seamless pipes usually have the outer diameter less than 6mm and wall th...

　　 Stainless steel pipe elbow has excellent corrosion resistance, stainless steel surface thin and strong oxide film so that all stainless steel in all water quality has excellent corrosion resistance, even buried also has excellent corrosion resistance. So it is suitable for a variety of water quality, in addition to disinfection and sterilization, do not need to control the water quality, at the same time, there is no corrosion and excessive exudate, to maintain clean water quality, to prevent secondary pollution, can withstand up to 30 meters per second The impact of high water flow. The stainless steel pipe elbow has a rust point, indicating that the elbow is not purely stainless steel material is made. Rust point can be polished with ultra-fine sandpaper bright colorless paint to do after the anti-rust treatment can be used. If you do not deal with rust point, these rust points will gradually expand, affect the appearance and will shorten the elbow life. 　　Many people think tha...

　　 Carbon steel pipe is made with steel ingot or solid round steel and processed into a tubular billet by perforation, than finished with hot and cold rolled. So it can be divided into hot rolled steel pipe and cold rolled steel pipe two categories. 　　Hot rolled steel pipe can be divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking tube, geological steel pipe and others. 　　Cold rolled steel pipe not only included general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking tube, but also included carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless thin-walled steel pipe and profiled steel pipe. 　　According to the classification of use, we can divide the carbon steel pipe into below 5 types: 　　1.Pipeline tube: Such as water or gas tube, seamless steam pi...

　　If stainless steel welded pipe in a specific working environment, the need for welding repair, the welding preparation should be carefully checked before, in order to ensure complete removal of defects. Welding of stainless steel tubes shall be carried out in accordance with the welding procedure as assessed in ASME Code Section IX. Welding operators or welding equipment operators performing welding shall comply with the qualification requirements of Volume IX. In addition to A1 or A2 component of the weld metal can be used for P1 material, the weld metal should be equivalent to plate P-No A-No component requirements. When the purchaser agrees, other weld metal that matches the material matrix of the material to be welded may also be used. The weld metal must be evaluated in accordance with ASME Code, Volume IX. 　　If a stainless steel pipe material is required to be subjected to a Charpy impact test, the weld qualification test shall also include welds, heat affected zones and Cha...

　　Stainless steel seamless pipe is a long strip of steel with a hollow section and no joints around it. 　　The characteristics of stainless steel seamless pipe: 　　First, the thicker the wall thickness of the product, the more economical and practical it is. The thinner the wall thickness, the higher the processing cost will be. Secondly, the process of the product determines its limited performance. The seamless steel tube has low precision: uneven wall thickness, low brightness inside and outside the tube, high fixed-length cost, and pitting and black spots on the inner and outer surfaces are not easy to remove; third, its detection and shaping must be processed offline. Therefore, it embodies its superiority in high-pressure, high-strength, mechanical structural materials. 　　The type of stainless steel pipe: 　　The rolling method is divided into hot rolling, hot extrusion and cold drawing (rolling) stainless steel tubes. According to the stainless steel metallographic structure...

　　Precision pipe is the carbon, alloy or stainless steel pipe with high precision sizes. Usually it has been made through hot rolling or cold drawn (cold rolling) processes. So precision pipe is a kind of seamless pipe . 　　Precision steel pipe material standard 　　International standard for precision pipe is DIN 2391, which is applied with European standard. 　　As a matter of fact, more steel pipe standard could applied for the precision pipe. Includes DIN2445, EN10305, DIN1630, DIN1629, ASTM A106, ASTM A179, JIS G3445 　　Materials available with 10#, 20#, 35, 45, 40Cr, 25Mn. 37Mn5, St35(E235), St37.4, St45(E255), St52(E355) and etc. 　 　Size Tolerances 　　For hot rolling precision steel pipe, tolerance of OD is +/- 0.1%. 　　For cold drawn precision pipe, tolerance allowed in below conditions: 　　Diameters 6mm to 10mm, normal tolerance condition +/- 0.2%, premium tolerance condition +/- 0.15%. 　　10mm to 30mm, normal tolerance condition +/- 0.4%, premium tolerance condition +...

　　There are various steel pipes from seamless steel pipe to stainless steel pipe which can be used for transmission mission. What’s the difference for those pipes? How could we choose them for the engineering work? Today we would have a look at the different categories for water supply steel pipe and drainage pipelines. 　　Taking building water supply as an example, we will discuss it specifically. 　　First of all, the building water supply system would be classified with several types. They are living water supply system, production water supply system and fire water supply system. Different application would adopt different steel pipes. 　　Then, talking about building drainage system. It is another situation we should think about. Due to the nature of the sewage discharged from the system, domestic sewage, industrial waste water and roofing would be main types of sewage. Under this situation, two or more types of combinations in a pipeline are called combined flow systems 　　Acco...

　　Seamless stainless steel pipes are the preferred choice for high-temperature applications across industries due to their several superior properties. They possess greater strength under loading, exhibit exceptional corrosion resistance, can withstand shocks and vibrations, and offer reliable performance even under the toughest and harsh conditions. Due to these benefits, seamless stainless steel tubes and pipes are used in heating-pipelines, containers, coal-saving devices, super-heaters and repeaters, high press boiler, heat exchanger and condenser tubes, mechanical and structural tubing, among several others. 　　Grades of Stainless Steel Used in Producing Seamless Tubes and Pipes 　　Steel tubes and pipes used for the high-temperature applications must be of superior quality to resist high temperatures ranging from 400 degree Celsius to 1100 degree Celsius. For this reason, manufacturers use the following grades of stainless steel to fabricate seamless tubes and pipes. 　　304/304...

　　Seamless stainless steel pipes treatment technology refers to the processing of achieving uniform silver with metallic luster. This is generally referred to the production of large seamless stainless steel pipes. Because large seamless stainless steel pipes is manufactured through stamping, folding and welding process, the surface of workpiece has oil, rust, macular, which is neither beautiful, and easy to rust, reducing its stainless steel quality and value. 　　To make seamless stainless steel pipes achieve the standard, the surface must be finished. After forming matte treatment, that can achieve beautiful appearance, but also improve its anti-corrosion and anti-discoloration performance. After the above method, the corrosion resistance of stainless steel seamless pipes can be increased by 2 to 3 times. 　　Seamless stainless steel pipes does not rust due to the existence of chromium, nickel components, and then through the matt treatment, not only can eliminate the matrix im...