steel pipe

　　Stainless steel seamless pipes treatment technology refers to the processing of achieving uniform silver, and has a metallic luster. This is generally referred to the production of large stainless steel seamless pipes. Because large stainless steel seamless pipe 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 stainless steel seamless 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. 　　Stainless steel seamless pipes does not rust due to the existence of chromium, nickel components, and then through the matt treatment, not only can eliminate the matrix i...

　　Talking about LSAW steel pipe , it is mainly used in oil, gas, liquid coal on land and offshore. Of course, its original material and production process have decided its special characters. Today, our topic would be its features for its function. 　　First of all, internal stress for LSAW steel pipe would be smaller than seamless steel pipe . And it would be uniformly distributed after the full length expansion. 　　Secondly, due to the inside and outside of the welding is made after the tack welding, thus, we should know that this welding process would be stable for customers’ good transportation. 　　In addition, compared with non-longitudinal seamless steel pipe, the length of LSAW steel pipe would be shorter than the seamless one. Thus, the probability of defects occurrence is very low. 　　What’s more, the pipe can be either in very large diameter with thick wall or in very small diameter with thick wall. 　　 http://www.xysteelpipe.com/info/The-production-technology-of-LSAW-ste...

　　We know that steel pipe surface treatment is one of the key factors determine the service life of the pipeline corrosion, it is a precondition for whether the anti-corrosion layer and steel tube can be combined. It is verified by the research institutions that the life of the coating depends on the quality of coating types, coating quality and environmental factors such as construction. The steel tube surface treatment effects on coating life accounted for about 50%, therefore, we should be strictly accordance with the specification on the coating on the surface of steel pipe requirements, continuously explore and summary, continuously improve steel pipe surface treatment. 　 　1. Cleaning 　　Using solvent and emulsion to clean the steel surface, to remove oil, grease, dirt, lubricants, and similar organic matters, but it cannot remove rust, scale, such as welding flux on the surface of the steel, so only as auxiliary in the anti-corrosion production. 　 　2. Rust cleaning by tools...

　　Precise stainless steel pipe refers to stainless steel pipes with austenitic organization in normal temperature. Stainless steel tubes contain about 0.1% C, 18% Cr, 8% ~ 10% Ni, with stable austenite organization. Common heat treatment technologies are: solution treatment, stabilizing treatment and stress relief treatment. 　　 Solution treatment 　　Heat precise stainless steel pipes to 1050-1150 degrees Celsius and then water quenching, making carbon dissolved in stainless steel and keep the state in room temperature, which is a method of heat treatment to prevent the intergranular corrosion and corrosion resistance of the steel will be improved greatly. For thin-walled precise stainless steel pipes, generally water cooling is adopted as well as air cooling. 　　 Stabilizing treatment 　　Stabilizing treatment is commonly carried out after solution treatment. Heat precise stainless steel pipe to 850-880 degrees Celsius and perform air cooling after heat preservation, Cr carbide wi...

　　Small diameter seamless steel pipe is used for double-sided submerged arc welding production technology. It product by bending, commissural, internal welding, outside welding, straightening, flat top multi-channel process to achieve the American Petroleum Institute standards. Large diameter thick wall steel pipe used in large multi-steel construction and make the body supporting portion. For example bridge piling, piling seabed, and high-rise building pile. 　　Small diameter seamless pipes refer to the ratio of small diameter and wall thickness of the pipe. The smallest diameter is up to 3mm and the minimum wall thickness to 1mm. 　　Small diameter seamless steel pipe weight formula is [(OD - Wall Thickness) * Thickness] * 0.02466 = kg / m (weight per meter) 　　Small diameter seamless steel pipe materials are including 10#, 20#, 25#, 35#, 45# and16Mn etc. 　　Mainly used for petroleum geology drilling pipe, petrochemical cracking tube, boiler tube, pipe and automotive bearings, tr...

　　Steel pipe’s maintenance is also an important topic for both supplier of seamless or welded steel pipe like ERW steel pipe. Then how should we remove the steel tube surface stain. 　　To begin with, we can clean it firstly. And how to pick up the clean material? We would recommend petroleum to crack steel pipe’s surface oil, dirt, grease, and some other substances. 　　We would start our step two once we finish our step one. This step would be the treatment with acid. There are two pickling treatment, one is a chemical treatment and another treatment method is electrolysis. 　　Then, we will go to next. This step plays an important role for whole maintenance. We will use the tool to the surface of the oil cracking pipe polished, although the effect may not be very good polish, but this procedure is also indispensable. 　　 http://www.xysteelpipe.com/info/Clean-methods-for-surface-stains-of-steel-tube-1255-1.htm

　　Hot rolled carbon square pipe and cold formed steel hollow section square pipe is a process, they have a great impact on the microstructure and properties of steel, rolled steel, hot-rolled mainly based, only for the production of cold-rolled trumpet steel and sheet. 　　 Hot-rolled 　　Pros: You can destroy ingot casting organizations, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved. This improvement is mainly reflected in the direction along the rolling direction to a certain extent in the steel is no longer isotropic; pouring formed bubbles, cracks and loose, can be welded at a high temperature and pressure. 　　Disadvantages: After hot rolling, the hot rolled square hollow section steel pipe inside the non-metallic inclusions (mainly sulphide and oxide, and silicates) is pressed into the sheet, delamination (interlayer) phenomenon. Layered in the thickness direction of the steel tension performance ...

　　 Galvanized steel pipe with corrosion resistance and wear resistance are relatively strong, is commonly used for fence, fence, fence, balcony guardrail etc., and has been widely used in municipal engineering, road, factory, school, development zone, garden, Plaza, community and other places. 　　Standard chemical and mechanical pipe seamless steel pipe, because of its large volume so widely used in petroleum chemical industry, machinery manufacturing and other industries, seamless steel pipe, because its weight is relatively large, so in the market than the expensive galvanized steel pipe. 　　Galvanized steel pipe in a certain extent is on the surface of the seamless steel tube is coated with a layer of zinc, galvanized steel type is not fixed, there may be raw materials are welded pipe, seamless pipe impossible. 　　Galvanized steel pipe corrosion resistance in seamless steel pipe, seamless steel pipe bearing capacity than galvanized steel stronger, galvanized steel pipe galvanize...

　　Large diameter straight seam steel pipe is widely used in aviation, aerospace, energy, electronics, automotive, light industry and other industrial sectors, and is an important welding process. 　　The main processing method for large diameter straight seam steel pipe: 　　Forged Steel: We use a forging hammer reciprocating impact force or press pressure to change the blank shape and size. We need a pressure processing method. 　　Extrusion: The steel is placed in a closed steel extrusion, one end of the pressure, so that the metal out of the die hole, forming the same shape and size of the finished product processing methods for the production of non-ferrous metal products, steel. 　　Rolling: A method of passing a gap (various shapes) of a rotating roller through a steel material, by reducing the cross section of the roller and compressing the roller, and by increasing the length. 　　Stretched steel: It is a method of increasing the processing length by passing a rolled metal blan...

　　A kind of steel pipe, no matter seamless or ERW steel pipe, would have its relative price with the corresponding price. So as steel pipe supplier, we would ask which kind of demand you’ve made for your steel pipe firstly, then we will discuss the details for our wholesale. 　　Steel pipe varieties, usages, piercing methods would lead to different final products for our customers. Here are some examples for you to understand. 　　Different purposes would have various choices. For general purpose steel pipe, we would have relaxed quality demand during the whole production. And the requirements would be strictly if you need them to use among important applications like oil and gas transmission. As the latter would concern about the stress condition, deformation perforation method and so on. 　　In short, steel pipe technical condition is to ensure the quality and smooth production process as the basis to determine, and with different methods vary perforation, with the technical conditio...

　　Higher Pressure Ratings: One of the most striking features of seamless pipe is its ability to withstand higher pressure. Hence a seamless tube is said to be equally stronger around the entire circumference of the pipe. It has 20% higher ASME (American Society of Mechanical Engineers) working pressure in comparison to the conventional welded tubing methods. In critical applications, the instruments and tubing can sustain pressure above 30,000 psi. This can eventually save time and money, which will also aid in minimizing the maintenance expense and reducing the unplanned downtime. Seamless tubes are designed to sustain a great amount of load when filled with materials or liquid in addition to its own weight. 　　Uniformity in Shape: Seamless pipes have round cross section as it comes with a continuous extrusion, thus giving them a round cross section and a uniform shape. Also, the seamless tubing has no longitudinal weld seam. The tubes are designed in such a way that they are comple...

　　304 stainless steel can fight a fire under normal temperature processing, easy to plastic processing, with its beauty surface, the using diversification, good corrosion resistant performance ,long durable than ordinary steel , resistant to high temperature oxidation and high intensity, It doesn’t need to surface treatment, so simple maintenance, cleaning, finish high welding performance is good. 　　The main difference between 316 steel pipe and 304 steel pipe on the chemical composition is that 316 contains Mo, and it is generally believed that 316 has better corrosion resistance than 304 under the high temperature environment .So engineers typically select 316 material components under the high temperature environment.But under the environment of sulfuric acid and high temperature ,engineers can’t use 316 . 　　The features of 304 stainless steel plate when bending as follows: 　　1. Poor thermal conductivity than normal low carbon steel, low elongation,so the deformation force bi...