Seamless Steel Pipe

Galvanized pipe has the dual advantages of corrosion resistance and long service life, and the price is corresponding to that of carbon steel seamless pipe or welded pipe, which is relatively cheap and has an increasing usage rate. However, some users do not pay attention when welding galvanized pipes, resulting in steel pipe defects. So what issues should we pay attention to when welding galvanized pipes? 1. The premise is to polish The galvanized layer at the welding joint must be polished off, otherwise bubbles, trachoma, false welding, etc. will occur. It will also make the weld brittle and reduce its rigidity. 2. Characteristics of galvanized steel pipes Galvanized steel is generally coated with a layer of zinc on the outside of low carbon steel, and the zinc layer is generally 20um thick. The melting point of zinc is 419°C and the boiling point is around 908°C. During welding, zinc melts into a liquid and floats on the surface of the molten pool or at the root of the weld. Zinc h...

Carbon steel tubes are made of steel ingots or solid round steel through perforation into capillary tubes, and then made by hot rolling, cold rolling or cold drawing. Carbon steel tube plays an important role in my country's steel pipe industry. Carbon steel tubes come according to your medium and working conditions. No one can guarantee that they can be used for ten years or how many years. If the material is not selected properly, even the best alloy may be corroded within 3 months. The use of carbon steel tubes has a lot to do with the environment in which they are used. If they are used outdoors without anti-corrosion coating, they will perforate soon, but if they are used indoors and coated with protective layers such as epoxy resin, then the It can be used for a long time. The service life of carbon steel tubes is related to the degree of corrosion of steel pipes in use. Steel pipe corrosion has internal corrosion and external corrosion. Internal corrosion is related to the d...

Project location：Qatar Product：ERW Welded Steel Pipe Galvanized Steel Pipe Standard and material：ASTM A53 GrB Specifications： 273*9.27*5.8 323.10.31*5.8 355.6*11.13*5.8 406.4*12.7*5.8 273.1*9.27*5.8 Usage: Stock Inquiry time：2022.06 Order time：2022.07 Shipping time：2022.11 Arrival time：2023.01 This order is an inventory order of an old customer in Qatar. The customer is a local stocker and also participates in the supply of products for oil projects. Through the cooperation in 2021, Xinyue has won the recognition and favor of customers. Since then, the two sides have started close contact, and Xinyue’s business specialists have never failed to meet customers’ expectations, and have consistently provided various steel consulting services for customers. In June last year, the customer sent a product inquiry. All the steel involved were our superior products, ERW welded pipe and galvanized pipe. In combination with the various needs of customers, our company submitted the price and scheme...

 Xinyue storage base, covering an area of more than 50000 square meters, 30,000 square meters outdoor material storage yard, warehouse 10000 square meters, for the community to rent, to undertake all kinds of futures products storage business! The factory is equipped with 6 tianqi 10 tons to 50 tons, can store more than 100,000 tons of goods, 200 tons loadometer, and independent office rental, comfortable office environment, convenient geographical conditions, price concessions, service supremacy. As the storage base of xinyue group, we not only provide more storage areas for factories in tianjin and around tianjin, but also provide more convenient business services to the market. We welcome your call for consultation and cooperation at any time. Xinyue Steel Storage Base: Address: No.8, Baiyi Road. Daqiuzhuang Village?Jinghai District, Tianjin Tel number: 13114803333 Xinyue storage not only provides good service for all kinds of customers in local product inventory transfer, but a...

    What are the factors affecting the performance of galvanized steel pipes?     1. Carbon: The higher the carbon content, the higher the hardness, but the worse its plasticity and toughness.     2. Sulfur: It is harmful debris in steel. Steel with high sulfur content is easy to be brittle when it is processed at high temperature under pressure. It is usually called hot brittleness.     3. Phosphorus: It can significantly reduce the plasticity and toughness of steel, especially at low temperatures. This phenomenon is called cold brittleness. In high-quality steel, sulfur and phosphorus must be strictly controlled. But on the other hand, the low-carbon steel contains high sulfur and phosphorus, which can make it easy to cut, which is beneficial to improve the machinability of the steel.     4. Manganese: can improve the strength of steel, weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of ste...

　　What is galvanized steel pipe ? 　　Galvanized pipes, also known as galvanized steel pipes, are divided into hot-dip galvanizing and electro-galvanizing. The hot-dip galvanizing galvanized layer is thick, with uniform plating, strong adhesion and long service life. The cost of electroplating is low, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipes. 　　1. The surface of the steel pipe is more durable with anti-embroidery treatment, and it will not be oxidized too quickly, and will not form white rust on the steel pipe; 　　2. The steel pipe is fully protected. After heating, each part of the steel pipe is plated with zinc, and the concave and convex parts are protected; 　　3, with anti-corrosion and wear-resistant features, let the steel pipe use longer; 　　4. Since zinc has been plated on the outside of the steel pipe, the time for oiling or lacquering outside is omitted, and the construction is more convenient; 　　5...

　　 Galvanized steel pipe 　　Due to its low price, superior performance, good fire performance and long service life, galvanized steel pipes are widely used in fire water supply systems, especially in automatic sprinkler systems, while plastic pipes (small pressure) are not suitable for fire water supply systems. Application. 　　 Copper tube 　　The most advantageous metal pipe is copper pipe. The copper pipe is used for a long time, and has many advantages. The pipe and pipe fittings are complete, the interface modes are various, and many applications are in the hot water pipe. 　 　Cast iron pipe 　　Compared with steel pipes, water-supply cast iron pipes are not easy to corrode, low in cost and good in durability, and are suitable for buried laying. The disadvantages are brittleness, heavy weight, and small length. The connection method is generally a socket connection. Clamp-type cast iron drain pipe is a new type of construction drainage pipe. It has entered the international ma...

　　 Galvanized steel pipe has the advantages of corrosion resistance, long service life, and the price of galvanized steel pipe is correspondingly low, so its usage rate is now higher and higher. But when users welding galvanized pipe. if didn't pay attention to it, there will be some unnecessary troubles occured. What problems should we pay attention to when welding galvanized pipes? 　　1. Polishing 　　The galvanized layer of the weld must be polished away, otherwise bubbles, trachoma, and false welding will occur. It also makes the weld brittle and the rigidity decreases. 　　2. The welding characteristics 　　Galvanized steel is generally coated with a layer of zinc outside the low carbon steel, and the layer is generally 20 um thick. Zinc has a melting point of 419 ° C and a boiling point of about 908 ° C. In welding, zinc melts into a liquid that floats on the surface of the bath or at the root of the weld. Zinc has a large solid solubility in iron, zinc liquid will deeply e...

　　 Galvanized Steel Pipe Solvent Treatment 　　1, the steel pipe into the solvent tank, the tape to relax all the steel immersed in the solvent, does not allow the steel pipe surface exposed solvent surface. Such as steel pipe at both ends do not take bubbles so far, and then lifting the side of the pipe vibration up, lifting the steel pipe control solvent into the drying rack. 　　2, steel pipe in the solvent treatment process, the tilt angle of steel pipe is not greater than 15 °. 　　3, the pipe immersed in the solvent time of 60 to 120 seconds, on duty back to the tube soak 3 to 5 minutes, successor to the plating tube soak 5 to 10 minutes. 　　4, solvent temperature: keep the solvent clean at room temperature. 　　5, the solvent-treated steel pipe, do not stick to other dirt, do not pour Sheung Shui, placed in the drying platform balance; placed on the drying bench steel pipe, pipe is not allowed to go to the top, such as must be up , The feet must be coated with ammonium chlorid...

　　Galvanized steel pipe is covered with zinc material, so galvanized pipe have a stronger ability of steel pipe resistant to corrosion. Covered with zinc also can prevent the buildup of mineral and deposit of the water line. So the primary use of galvanized pipe is to carry water to homes and commercial buildings. What's more, since its resistance to corrosion, galvanized steel pipe is commonly used as scaffolding frames. 　　The dark color of black steel pipe comes from the iron-oxide formed on its surface during manufacturing. So it is different from galvanized pipe because black steel pipe is uncoated. The black pipe is manufactured without a seam, which causing it is better pipe to carry gas. So the primary purpose of black steel pipe is to carry propane or natural gas into residential homes and commercial buildings. In addition, the black pipe is more fire-resistant than galvanized pipe, so it is also used for fire sprinkler systems. 　　On the one hand, there are some disadv...

　　Galvanized pipe is protected by zinc, so it is not easy to rust, galvanized steel pipe is lighter than seamless steel pipe , if it is used in the balcony, the best light with galvanized pipe, because seamless steel pipe is heavy with thick wall thickness, and the cost of seamless steel pipe is higher than galvanized steel pipe, as well as galvanized steel is durable, useful life is much more than a seamless pipe. Surface coated or hot dip galvanized welded steel pipe can enhance corrosion resistance and prolong life. 　　Difference between galvanized pipe and seamless pipe 　　Manufacturing process difference: 　　Galvanized steel refer to a galvanized surface, there may be welded pipe, it could be seamless, seamless steel pipe manufacturing process means welded and seamless points. 　　Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. seamless pipes dominates 65% of market share in Chinese boiler industry. 　　Use...

　　Q235 is not only the material used for the production of galvanized steel pipe rack, but also the only standard to verify the quality of pipe rack, as well as test tube rack quality. Q235 includes carbon C: ≤0.20% Si Si: ≤0.35%, manganese Mn: 0.3 ~ 0.7%, sulfur S: ≤0.045%, phosphorus P: ≤0.045%, chromium Cr: to allow the residual content of ≤0.30%, Ni: to allow the residual content of ≤0.30%, copper Cu: to allow the residual content of ≤0.30%, Q235B a certain elongation, strength , good toughness, easy stamping and welding, widely used in the manufacture of mechanical parts in general. Mainly used in construction, the bridge engineering and high quality welded structure. 　 　Q235 Material galvanized pipe 　　Therefore, the use of materials Q235 galvanized steel pipe, rack tube material is divided according to: 　　1. A single standard steel pipe rack: it is a steel pipe with the same specifications (example: scaffolding fasteners such as:. Ф48 × 3.5 of welded steel pipe) 　　2. A va...

　　 Galvanized steel pipe is a steel pipe that has been coated with zinc. This coating protects the steel from corrosion. It is most commonly used for outdoor construction like fences and handrails, or for some interior plumbing. The zinc provides a barrier against corrosion so that the pipe may be exposed to the outdoor environmental elements. The protective barrier proves equally effective against damage from indoor humidity. 　　Galvanized steel can be made into a strong plumbing or tubing material — one that resists corrosion from exposure to water or the elements. It has been used used for water-supply pipes or as a strong tubing for outdoor applications. 　 　Galvanized steel hardness 　　Galvanized Steel are those steel that has been covered with a layer of zinc metal. Galvanized steel in terms of hardness test is a Brinell hardness, Rockwell hardness, Vickers hardness, Shore hardness, micro-hardness and high-temperature hardness, etc., which can be divided into a variety, most ...

　　We can hear different opinions in steel pipe market for seamless steel pipe, ERW steel pipe, galvanized steel pipe and so on. Actually, according to the large categories, steel pipe is produced by two methods, which result in either seamless or welded products. 　　Seamless steel pipe, produced by solid round stock. First, it would be heated, then extruded which would lead to a hollow steel pipe. Of course, this can give us disparate products by different parameter in the steel which ranges from carbon seamless steel pipe to galvanized seamless steel pipe and so on. This kind of process would give the seamless steel pipe a smooth and even surface finish as well as the balanced stress taking. Thus, it is more reliable, and can result in products with much higher strength and integrity. 　　Welded pipe, for example, ERW steel pipe or SSAW steel pipe, is manufactured by steel sheets which are rolled for use. So they have welded joint which causes the uneven balance for the product compa...

　　As we all know, each step during steel pipe(from seamless steel pipe to ERW steel pipe as well as galvanized steel pipe) production would have decisive impact on high quality of the steel pipe. 　　Today, our main topic is production control: 　　First of all, the controlling of steel pipe’s gap. Large or not would have main effect for the quality of steel pipe. Poor welding would come from the large weld control as the welds are not fused or cracked. Due to the heat is too large, the weld control is too small, this would lead to weld burns. 　　What’s more, high-frequency induction coil position control. For position, it is necessary to make the induction coil on the same center line with the steel pipe. And for the distance, it is important to make sure they are as close as possible for the front end of the induction ring and the center line of the pressing roller to the steel pipe, thus, it would reduce the strength of the weld. 　　 http://www.xysteelpipe.com/info/Production-cont...

    Production technology of galvanized steel pipe     Black inspection → hanging → degreasing → rinse → pickling → cleaning → dipping help plating → hot air drying → hot dip galvanizing → cooling → passivation and rinsing → discharge → inspection and dressing → packaging storage and transport     Technical requirements galvanized pipe should meet     1. Shop sign and chemical composition     The shop sign and chemical composition used by galvanized steel pipe should be consistent with those of black steel pipe stipulated by GB 3092.     2. Manufacturing method     The manufacturing method of the black tube (furnace welding or welding) is selected by the manufacturer. Galvanized steel pipe adopts hot dip galvanizing method.     3. Thread and pipe joint     (1) The galvanized steel pipe with thread to delivery, the thread should be vehicle-made after galvanized. The thread should be...

    Steel pipe, no matter which kind of category, from seamless to welded, is essential for human’s life. With each steel pipe’s process character, they can have different function for various engineering project. Today, we would like to have an introduction of optimization of sulfate zinc plating in hot galvanized steel pipe.     Optimization of sulfate zinc plating:     Sulfate zinc plating has the advantage of 100% current efficiency if necessary. Of course, the deposition rate is faster than other elements with retaining the main salt of zinc sulfate, and the remaining components are discarded. Production practice has proved that the thickness of the coating can meet the requirements in 2 ~ 3 minutes for continuous plating of wire and pipe.     http://www.xysteelpipe.com/info/Optimization-of-sulfate-galvanizing-process-in-hot-dip-galvanized-steel-pipe-901-1.htm

    Like the famous saying goes that “Love what you love, don’t ask questions”. Actually, even for the steel pipe such as seamless steel pipe, ERW steel pipe, galvanized steel pipe, choose the one you love and let it serve you by complete the transport mission.     Some researches have told human beings that galvanized steel pipe may caused the flow of water during transporting after decade’s use. However, like the human’s organ that may have problems. We should see the benefit of this kind of steel pipe too.     Steel is affordable, strong and readily worked for engineering project, but it will quickly rust if not protected from the effects of moisture. Under this situation, the galvanized steel pipe protected by zinc coating. Thus, it prevents the steel core from corroding by serving as a protective outer layer. This is the galaxy for the zinc galvanized steel pipe and for the replacement after decades would be necessary like human body’s exam every y...

    Taking notice for the old water pipes, specifically galvanized steel pipe when you rent an old house. No doubt that steel pips have an important role in transportation whether for water, oil or gas.     It gets me angry when I removed to my new rent house at first day. It was leaking water from the ground in kitchen when I open the water faucet just want to wash my hands. Thus I know due to the long time’s no replacement or examination, the pipes have troubles. These steel pipes build up with sediment on the inside, making the inside diameter of the pipe smaller and smaller over time, eventually to the point where water flow is unusable. These pipes also corrode at the joints, which can lead to leaks. Even they have the protection of the zinc galvanized, it cannot be good with the long time service.     So checking and replacement would be a necessary job for us when we use the galvanized steel pipe for a long time in a house.     http:/...

    We can see there are so much of waters coming from bridge when we walk under the bridge at rain day. Actually, every viaduct bridge needs the drain system made by various steel pipes like the ERW steel pipe.     Drainage from bridge must be led to the city sewer, and we can not let its natural splash together which would cause trouble for citizens as water’s everywhere. However, which kind of pipes would be a best option for its drain?     Anti-corrosion would be one of a most important factor we need to consider. Plastic would not so good for acid and alkali so we may give up it this time. And galvanized steel pipes would be one of good options among these pipes. Of course, it can also handle the problem of heat makes something expand and cold makes it contract.     Generally speaking, with the wide use of various steel pipes, they are now the pets for human being’s engineering project.     http://www.xysteelpipe.com/info/Dr...