Seamless Steel Pipe

Stainless steel, renowned for its exceptional corrosion resistance and durability, has become an indispensable material in a wide range of industries. Its unique properties make it the ideal choice for applications demanding high performance and longevity. In this article, we will explore the various applications of stainless steel pipes, flanges, and fittings, highlighting the benefits they offer. · Chemical Processing: Stainless steel’s resistance to a broad spectrum of chemicals makes it the preferred material for piping systems in chemical plants, refineries, and pharmaceutical industries. Its ability to withstand corrosive substances ensures product purity and equipment longevity. · Food and Beverage: The hygienic nature of stainless steel makes it essential in the food and beverage industry. Stainless steel pipes, flanges, and fittings are used in processing equipment, storage tanks, and transportation systems to maintain product quality and safety. · Oil and Gas: In the demandin...

 Stainless steel pipes have become an essential component in many industries because of their superior qualities. They offer excellent corrosion resistance, high strength, and durability, making them ideal for applications in harsh environments. Xinyue Steel is a leading supplier of stainless steel pipes, offering a wide range of sizes, shapes, and grades to meet the needs of various industries. One of the key advantages of stainless steel pipes is their corrosion resistance. They are highly resistant to rust, staining, and corrosion caused by exposure to water, air, and chemicals. This makes them suitable for use in a wide range of environments, including marine, chemical, and food processing industries. Stainless steel pipes are also easy to clean and maintain, making them a hygienic choice for industries that require high levels of cleanliness. Another advantage of stainless steel pipes is their strength and durability. They have a high strength-to-weight ratio, which means they...

Project location：Middle East Product：Duplex stainless steel pipe and fittings Specifications:Pipe- DN400*STD*18M length Standard and material:UNS31803 Usage:Central Sewage Treatment Plant Inquiry time：2021.02 Order time：2021.10 Shipping time：2022.01 Arrival time：2022.03 In the early stage of customer inquiry, after communication and discussion, the difficulty is the project start time very urgent, the customer expects to receive the products as soon as possible to start construction. In order to deliver as fast as we can, we successively submitted five versions of the production plan to the customer, also attached the production plan in detail. The considerate service made the customer choose Xinyue without hesitation. Xinyue also did not disappoint customer, constantly informed customers of the production progress, and regularly took photos of the progress in daily report. During the same period, various preparations for shipment are also being actively handled. Under the coordination...

Project location：Southeast Asia Product：Carbon steel and stainless steel pipe and fittings Standard and material：ASTM A106 GR B, ASTM A234 WPB/ ASTM A105 Specifications：NB 1/2 inch to 24 inch Usage：Power plant project Inquiry time：2022.08.11 Order time：2022.09.06 Shipping time：2022.10.24 Estimated arrival time：2022.11.05 South East Asia has always been one of our main markets, and with many years of successful projects supply and a large customer base, we have established grate reputation and corporate influence within the industry in the market! The project we are introducing today is a repeated order from a regular customer in South East Asia. Before receiving the enquiry, this project was an on-hand project of the customer. The customer wanted us to give maximum technical support in addition to steel product support, so that the project progress could be carried out normally: Xinyue actively cooperated with the provision of a full set of documents, including the material book SAMPLE...

 We use stainless steel seamless pipes many times now, and many customers face a lot of problems when selecting materials, looking at the uneven prices on the market and related problems, there is no final solution. Here are some tips to share with you, so as to improve the cost-effectiveness of products when selecting finished products in the later stage. 1. Take 304 material as an example: when selecting steel pipes, it must be determined that the material meets the standard. 1) From the price analysis, if the 304 stainless steel pipe is even lower than the general price of the 301 material on the market, it must be carefully identified, it is likely to be impersonated by other materials; 2) Identify whether the word “304” is stamped on the surface of the pipe, and ask for the manufacturer’s quality certificate as a certificate; 3) It can be tested with an acid reagent, after 30 seconds, the material 304 will not change color, and the material 201 will turn black; 4) For bulk pur...

    There are a lot of stainless steel pipes on the market, and there are many brands. It is very difficult for lay people to identify the quality. This gives some stores the opportunity to deceive users, but using some simple methods to identify the quality is actually very effective. When you choose, do n’t just look at the price, but ignore the quality, choose some products that are more well-known than taught are more reliable.     The following is a simple and easy-to-learn method for distinguishing the quality of steel pipes. According to these 5 factors to identify, it is easy to buy high-quality steel pipes.     1. Appearance of steel pipe     2. Hydraulic test, tensile test, non-destructive testing     3. Chemical analysis of steel pipes     4. Steel pipe material list     5. Steel pipe implementation standards

　　Introduction of stainless steel pipe engineering accessories 　　Stainless steel pipe fittings are a type of stainless steel pipe engineering accessories. It is made of stainless steel. It contains: stainless steel elbow, stainless steel tee, stainless steel tee, stainless steel reducer, stainless steel pipe cap, etc. 　　Classification and function of stainless steel pipe engineering accessories 　　According to the connection method, it can be divided into socket stainless steel pipe fittings, threaded stainless steel pipe fittings, flange stainless steel pipe fittings and welded stainless steel pipe fittings. The stainless steel elbow is used for the place where the pipe turns; the flange is used for the parts that connect the pipe and the pipe to each other and connected to the pipe end; the stainless steel tee is used for the place where the three pipes are collected; Place; stainless steel reducer is used where two pipes with different pipe diameters are connected. 　　Stainle...

　　Sharp stainless steel tubes are widely used in the production of various mechanical parts when they are used. Their accuracy requirements are relatively high when they are operated, so they must pass their complicated processes and strict inspection before they can leave the factory. In addition, with the continuous development of science and technology, the production process of stainless steel pipe drilling has been continually improved and improved, which has greatly promoted the improvement of the production efficiency of honing pipe. 　　In order to make the stainless steel pipe more efficient, we have adopted a new production process in the transformation process. During operation, it will be produced through powerful and automated grinding grinding, which includes the use of electricity or ultrasonic grinding method to complete the production task. 　　The good production process in stainless steel, honing tube is an inevitable improvement in production efficiency. We use the...

　　There are some ways to store stainless steel pipe (ss pipe): 　　1. Choose the right place and warehouse 　　1) The storage of stainless steel pipes for the site or warehouse should be selected in a clean and drained place, away from the production of harmful gases or dust and mining factories. In place to remove weeds and all debris, keep the steel clean. 　　2) In the warehouse, it is forbidden to stack materials that are corrosive to the stainless steel pipe with acid, alkali, salt and cement. Different varieties of stainless steel tubes must be stacked separately to avoid confusion and avoid contact with corrosion. 　　3) Large steel, rail, shameful steel, large diameter steel tube, forged parts, etc. They can be stacked to open. 　　4) Small and medium steel, wire rod, steel bar, medium gauge steel tube, steel wire and steel cable, etc., can be stored in a well ventilated shed, but must be in the mat. 　　5) Some small stainless steel tubes, sheet steel, silicon steel, small di...

　　We supply ASTM A312 Grade 304L, 316L, 316ti, 321 / H, 347 / H, 304H, 904L Stainless steel pipes are often used in applications requiring rigid materials for the transport of drinking water and food. 　　Manufacturers select stainless steel because certain synthetic materials have unwanted or unknown exposure effects while stainless steel has many desirable qualities to keep water clean. 　　Steel Pipes can also be used for structural support in buildings and vehicles. The terms "pipe" and "tube" are generally interchangeable, although technically, "pipe" implies high engineering qualities. The tubes are generally manufactured based on standard sizes. 　　Stainless Steel Pipe Production 　　There are two main pipe manufacturing methods that lend their names to pipe ratings. 　　Seamless. Seamless steel pipes are produced by extrusion. Extruded tubes can be formed in hot or cold processes. Long sections of steel bar are forced through a die that blocks th...

　　At present, the same polishing process on the market is basically suitable for the polishing process of stainless steel pipes . The stainless steel pipe series derived from the 304 series has good adaptability to the surface polishing process, and the processing effect is very excellent. The current polishing type grades are mainly divided into: outer surface #400/#600, hair surface and matte surface. 　　1, oil brush drawing 　　The stainless steel pipe processed by oil brush is mainly used for the decoration of elevators and some home appliance furniture. The effect after oil brushing and drawing is very beautiful, and has good decorative effect. The oil sanding wire is also divided into filament and short wire. For the decoration of hair accessories such as elevators, filaments will be selected, while small appliances or some furniture decorations will choose short filaments. 　　2, dry grinding and drawing 　　Dry-brushed wire drawing does not hit the processing equipment, and th...

　　The so-called SS pipe is a kind of long and round hollow steel bar. It is famous for the following features: reliability, economy, convenience and hygiene and so on. Therefore, this pipe is widely used in a lot of projects and other pipes can not replace its functions at all. 　　This pipe is made up of two categories namely stainless steel pipe without seam and stainless steel welded pipe. According to different manufacturing technologies, it can be separated into the following types: hot rolling, extrusion, cold drawing and cold rolling. Besides, on basis of the form of section, the SS pipe can also classified into circular pipe and deformed pipe including square, rectangular, semi-circular, hexagonal, triangular, octagonal and so on. 　　With the rapid development of economy, a great number of houses, public constructions and travelling facilities are built, so there is new requirement for the hot water supply and domestic water supply. Especially for the quality of water, people...

　　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. 　　Key processes in manufacturing the precision steel pipe 　　During manufacturing processes, the key point is to do the annealing for raw materials. 　　Precision steel pipe manufacturing flow chart: 　　Raw Material Inspection – Remove Oxide Layer – Visual Inspection – Heating – Hot Rolling – Pickling and Passivation (Phosphating) – Grinding – Lubrication and Drying – Cold Rolling (Internal and external extraction) – Remove Oil – Ends Cutting – Inspection – Marking – Packing and Storage 　　As we know, most of precision steel pipe has cold drawn and hot rolled process. On the contrast, cold rolling will be more complicated. Not only the pipe need to be continuous rolled by three roller, but also the test have to be done after extrusion, so to guarantee the quality ...

　 　Corrosion Protection 　　Coating or cathodic protection is not required for stainless steel in most locations. A thin chromium-rich self-healing oxide film provides corrosion protection for stainless steel and no corrosion allowance is required. Erosion Resistance Stainless steels are much more resistant to erosion-corrosion caused by high flow rates and particulate matter than steel. They can handle high velocity and turbulence (pumps) without suffering wall thickness erosion. 　　Low Coefficient of Friction 　　Stainless steel retains low hydraulic friction properties as compared to aging cement lined or corroded steel pipes, which results in lower water pressure losses and pumping cost savings. 　 　Ease of Fabrication 　　Stainless steels have excellent ductility and can be formed and welded into lightweight shapes, which assists in the handling and installation of pipelines. Stainless steel pipe is highly interchangeable and easily connected with other water piping systems and...

　　Many experts have said that in the near future, stainless steel pipes will play a more important role, replacing the plastic pipes that are now popular, and returning the water pipes to the metal age. The choice of materials in various facilities is determined by a comprehensive comparison of price and use effect, so plastic pipes have become a mainstream material in recent years. 　　The plastic pipe is generally made of synthetic resin, that is, polyester as a raw material, adding a stabilizer, a lubricant, a plasticizer, etc., and is extruded in a pipe making machine by a "plastic" method. Because of its light weight, corrosion resistance, beautiful appearance, no bad smell, easy processing and convenient construction, it has been widely used in construction engineering. It is mainly used as piping, drainage, exhaust and sewage sanitary pipes, underground drainage pipe systems, rainwater pipes, and threading pipes for installation of electric wires for house construction...

　　There are more than 60 sets of extrusion units in the world. Except for a few for profile extrusion, 70% of the units are used for the production of steel pipes. The main type is stainless steel pipes. Compared with the rolling (longitudinal and cross-rolling) production methods, the extrusion method is characterized by three-way compressive stress during metal deformation. Under this optimal stress state, for stainless steel tubes with large steel numbers and large deformation resistance, good deformation, internal and external surface quality and metallographic structure can be obtained. 　　The improvement of the vertical hydraulic perforation process equipment can make the deviation accuracy of the wall thickness of the waste pipe after extrusion reach 5%~7%. The extrusion die is simple, easy to manufacture and replace, and is suitable for the production of small batch and multi-size stainless steel pipes. The extrusion unit can also produce steel pipes with a wide range of speci...

　　316 stainless steel welded tube surface deposits of deposits containing other metal elements of dust or heterogeneous metal particles in the humid air, the condensate between the attachment and stainless steel, the two connected into a micro-cell, triggering the electrochemical reaction, protective film damaged, called electrochemical corrosion. Organic stainless steel tube surface adhesion of organic juice (such as vegetables, noodles soup, sputum, etc.), in the case of water oxygen, organic acids, organic acids for a long time on the metal surface corrosion. Stainless steel pipe surface adhesion contains acid, alkali, salt substances (such as the renovation of the wall of alkali water, lime splashing), causing local corrosion. In polluted air (such as a large amount of sulfide, carbon dioxide, nitrogen oxides in the atmosphere), the case of condensate, the formation of sulfuric acid, nitric acid, acetic acid point, causing chemical corrosion. 　　The above situation is caused by t...

　　 Stainless steel pipe fitting materials can't contact with other metals directly when lifting, non-metallic materials such as wood or rubber sheet should be padded. 　　Arc striking and arc stopping of stainless steel pipe fittings: back welding method should be adopted for arc striking and must be made within the groove, arc stopping should fill arc crater. Arc striking should be avoided in the pipeline and on the surface of pipe parent metal. If defects such as holes and crack are found when arc starting and arc stopping, they should be cleaned up. 　　Arc striking and arc stopping of stainless steel pipe fittings of multi-channel multi-layer welding should be staggered. 　　Argon tungsten-arc welding can be carried out only if the inner of pipes and cavity are protected by filling argon gas before back welding of stainless steel pipe fittings, pipe fittings and stainless steel pipes, pipe fittings and stainless steel pipes, pipe fittings connection and butt joint. 　　When st...

　　Manufacturing types and processes of stainless steel pipe 　 　1. Seamless Hot Rolling Processes 　　Round Pipe Billet → Heating → Perforation → Three Roll Skew Rolling, Continuous Rolling or Extrusion → Off Pipe → Sizing (Or Reducing Diameter)→ Cooling → Billet → Straightening → Water Pressure Test ( Or Flaw Detection) → Marking → Storage 　 　2. Seamless Cold Rolling (Cold drawn) Processes 　　Round Pipe Billet → Heating → Perforation → Head → Annealing → Pickling → Oil (Copper) → Multi Pass Drawing (Cold Rolling) → Billet → Heat Treatment → Straightening → Water Pressure Test → Marking → Storage 　　 3. Longitudinal welding (Straight seam welding) processes 　　Including ERW, EFW.

　　The solution temperature is mainly determined by chemical composition. In general, the solution temperature should increase for those containing many kinds of alloy elements or with high alloy. Especially for those that contains high steel, like manganese, molybdenum, nickel, silicon. Only by increasing the solution temperature can we dissolve and soften them. 　　But for stabilized steels such as 321 stainless steel pipe, when the solution temperature is high, the carbide of the stabilizing elements are fully dissolved in the austenite and precipitate in the grain boundary with the form of Cr23C6 after cooling. That can cause intergranular corrosion. We often adopt the lowest solution temperature for carbide(Tic and NbC) of the stabilizing elements which can't be dissolved or treated by solid solution. 　　For seamless stainless steel pipe, the three elements of the solution treatment are temperature, holding time and cooling rate. What is the role of solution treatment of seaml...