steel pipe

    Main equipment of producing lsaw pipe are as follows:     Steel milling machine: The two sides of the sheet metal for machining are machined, and the two sheets are processed into the desired form at one time. And the parallelism of the two plates to achieve the specified tolerance within the scope for the manufacture of high precision steel pipe to prepare.     Plate pre-bending machine: Milling machine will be processed on both sides of the welded steel plate edge pre-bending. To prevent the molding machine forming steel tube in the long straight edge, the edge of the steel plate will have the same radius of curvature of the steel pipe will be shaped. To ensure the roundness of steel.     Automatic steel tube forming machine: To complete the bending of various sheet metal forming.     Pipe pre-welding machine: Molding machine forming qualified open pipe blank, for further joint and pre-welding. Prepared for internal and ext...

    Seamless steel pipe in the heat treatment, there is thermal stress and tissue stress, this internal stress can be superimposed or partially offset, is complex and varied, because it can with the heating temperature, heating speed, cooling, cooling speed, parts shape and size changes, so heat treatment deformation is inevitable. Seamless steel pipe in the heat treatment process of mechanical collision will also cause deformation of parts, but this deformation can be improved with the operation to reduce and avoid.     1, Surface decarburization     Seamless steel pipe in the heat treatment process, if it is heated in the oxidizing medium, the surface will be the oxidation of parts of the surface to reduce the quality of carbon, resulting in surface decarburization. The depth of the surface decarburization layer exceeds the final processing of the amount will make the parts scrapped. Determination of surface decarburization depth The metallographic ...

    Spiral tubes for water transport if it is drinking water and need to IPN8710 anti-corrosion. IPN8710 anti-corrosion spiral tubes for water transport from the aliphatic polyurethane prepolymer and epoxy resin, high-quality pigments, additives, solvent composition. Dedicated to food, drinking water and other equipment in contact, piping water pipes , drinking water tank surface corrosion.     The main material of the spiral tube is mainly carbon steel, and the pipeline steel series x42-x70. Storage of water supply spiral tube products in the site or warehouse, should be selected in a clean, clean place, away from the production of harmful gases or dust of the factories and mines. On the ground to remove the weeds and all debris, keep the steel clean.     There are many types of corrosion medium in the water transport and supply. There are acid, alkali, salt, oxidant and water vapor. The coating must be chemically inert and resistant to acid and alkali...

    Longitudinal welded pipe on the form of welding is roughly divided into two types: the first is double-sided submerged arc welding, the second is high-frequency welding. But in between the two can make the diameter of the steel pipe is very different. Such as high-frequency welding of the pipe wall thickness of the general is not more than 12mm, this situation is caused by the performance of high-frequency welding, too thick welding machine can not melt the steel can be welded to shape. And double-sided submerged arc welding is different from it, it is not subject to the size of the steel pipe to be processed, diameter and thickness are far more than the size of high-frequency welding. Therefore, double-sided submerged arc welded pipe(dsaw steel pipe) is divided into butt welded pipe (also known as girth pipe) and a seam of the straight seam steel pipe, stealth seam steel pipe.     The so-called butt weld pipe is produced by the roll tube machine (due to the ...

    Main technical characteristics of dsaw steel pipe     First, the steel pipe forming process, the steel plate deformation uniform, residual stress is small, the surface does not produce scratches. The machined steel pipe has greater flexibility in the size and thickness of the steel pipe, especially in the production of high-grade thick-walled steel pipes, especially large-diameter thick-walled pipes, which can meet the advantages of other processes Users in the steel specifications more requirements;     Second, the use of pre-welding after welding (welding) of the process, in the best location to achieve welding, not prone to wrong side, welding and not welding and other defects, easy to control the quality of welding;     Third, the overall mechanical expansion, can effectively improve the dimensional accuracy of steel pipe and improve the distribution of stress in the steel pipe, so as to avoid damage caused by stress corrosion, while...

    Seamless steel tube is made by cold drawing and hot rolling, etc. to shape.     Two steel pipe process overview:     1, Cold drawn (rolling) seamless steel tube: round tube → heating → perforation → start → annealing → pickling → oil (copper) → multi-pass cold drawn (cold) → billet → heat treatment → correction Straight → water pressure test (inspection) → mark → storage.     2, hot-rolled (extruded seamless steel tube): round tube → heating → perforation → roll roll, rolling or extrusion → off tube → sizing (or reducing diameter) → cooling → billet → straightening → Water pressure test (or flaw detection) → mark → storage.

    Ordinary steel pipes, such as tap water pipes , are generally welded by bending the plate, and you can find a weld on it; the thicker diameter is generally a spiral weld.     SMLS pipe is generally the molten state of molten steel through the annular slit backlog and then after stretching and other processing technology molding, so there is no weld. In terms of performance, especially the pressure capacity than ordinary steel pipe has greatly improved, it is often used for high pressure equipment.     Such as piping connections for hydraulic equipment. The ordinary steel pipe weld part of its weak links, weld quality is also affecting its overall performance of the main factors. People living in the north have generally had a water pipe or heating pipe in the winter was frozen explosion experience, the explosion is generally the place where the weld. The pipe is not a smls pipe. Ordinary steel pipes, such as tap water pipes, are generally welded by ...

　　Do you love travel? Of course I do! Do you like climbing? Sometimes! For me, I like climb mountains and I would give thanks to the steel pipe, no matter which kind of it is, seamless steel pipe, ERW steel pipe as it give me safety guarantee. 　　Travel would make me happy and I still remember the climbing travel in Huashan Mountain. We’ve spent almost six hours in order to climb the mountain. However, it is too high for us and some of us would fear to look down when we climb in the half mountain. I was scared to look down as I was afraid that I may fall if I look due to the shiver of my feet. 　　Thanks to my friends as they told me that I can hold on the steel pipe on the road so that it would give me courage when I try to look down. It really worked at that time. I feel I have a friend who was holding me tight suddenly and those steel pipes gave me feeling of safety even they didn’t talk from the beginning to the end. 　　Finally, I got that steel pipe one by one with ...

    1.Choose the right process     From the comparison of several large longitudinal welded pipe technology and the analysis of the development of the large longitudinal welded pipe technology in the world, UOE unit is the main dsaw pipe unit in the world that produces high strength pipeline steel pipe. Its production capacity is large, product quality it is good. The world's developed countries have built such a unit. China is a big steel country and a country with a large amount of oil and gas pipelines. It is very necessary to build 1 or 2 UOE units of world advanced level to produce high quality steel pipes for oil and gas pipelines. In addition, 2 to 3 sets of other dsaw pipe units such as C-pressure forming and continuous roll forming (CFE) can also be constructed. Although the output of these welded pipe units is lower, the investment is less, the construction is quick, and the flexibility is good. Good quality, strong ability to adapt to the market. The si...

    In the production of erw pipe, there is a process called roll adjustment. In the production process, the roll damage or wear serious, the need to replace some of the roll on the unit, or a continuous production of a certain number to meet the needs of the entire roll replacement. At this time should be conditioning rolls, in order to achieve outstanding steel quality. Such as the roll conditioning is not good, easy to form steel pipe seam changes, lap welding, marginal waves, drum kits and pipe body surface with indentation or scratches, oval steel pipe and other shortcomings, therefore, roll change should grasp the roll conditioning tips.     1, Replace the standard steel pipe, usually the whole roll to be replaced. Roller conditioning approach is: with wire from the entrance to exit pull a base line, adjust, so that each hole in a base line, and make the molding line with the skill requirements. Replacing the standard roller, the first of the forming roll...

    In real production condition, post-production heat treatment is an available finishing option with two of the below manufacturing standards: ASTM A1085 and CSA G40. Some HSS production manufacturers have the ability to perform heat treatment on site, but usually it involves transportation of the HSS to a third-party heat-treating facility. Ordering will generally need to be done directly with a producer, and heat treatment will entail extra cost.? Heat treatment is available with A1085 by specifying Supplement S1, and with CSA G40 by specifying Class H. Both of these standards describe identical heat treatment, at a temperature of 850°F (450°C) or higher, followed by cooling in air. Manufacturers of product to CSA G40.20-13/G40.21-13 Grade 350WT Class H Category 2 Toughness should be able to demonstrate, through MTC, that all of the requirements of ASTM A1085 with Supplement S1 are met, for dual certification.     Heat treatment at a temperature at the range of...

    We have to admit that we cannot leave steel products, such as seamless steel pipes, steel bar and other products made by steel. With the development of advanced technology, we figure out the importance of steel. It is time for us to get into the world of steel now!     Where we can hear the voice of steel?     Steel industry would like to publish relative data about steel’s production, customers’ demand and trade all around the world.     Steel industry will present the steel’s sustainability characters with some introduction every year for the global level.     Steel companies would like to write articles to show clients the recent quality and quantities about the steel products.     Steel enterprises would try to get the API certification every year for a high quality product.     Why we choose steel?     Simply speaking, it would give you the guarantee to make the best material choice ...

    HSS, short for Hollow Structural Steel, is generally produces by cold-formed technique. The most common seen cold-formed methods are:     1. Cold-forming into a round shape at first, closing the section using electric resistance welding (ERW), and then potentially cold-shaping into a square or rectangular section. Products can be complied with ASTM A500 (ASTM, 2013), A847 (ASTM, 2014a), A1085 (ASTM, 2015a), CSA G40 (CSA, 2013) or even the ASTM A53 (ASTM, 2012) pipe specification.     2. Cold-forming into a square or rectangular shape directly, and closing the section using electric resistance welding. Products can be be complied with ASTM A500, A847 or A1085 specifications.     3. Cold-forming directly to a square or rectangular shape, and closing the section using submerged arc welding (SAW).     Hollow Structural Steel should conform to ASTM A1065     http://www.xysteelpipe.com/info/A-guide-to-HSS-517-1.htm

　　China is cracking down on air pollution, which worsens during the winter heating season. Chinese steel producers are feeling the pressure from the government to scale back production in the next few months. 　　Reuters reports that growth in China’s steel industry fell to a six-month low in October as a government crackdown on winter air pollution sent raw materials prices and new orders downward. 　　China plans to reduce crude steel production by 33 million metric tons over the winter. Cuts of 30-50 percent in utilization rates at some Chinese steel plants have already begun. While the main driver is the environment, the Chinese steel industry will also improve its cost basis by removing less efficient producers from its steelmaking capacity, reports S&P Global Market Intelligence. 　　The Chinese central government has committed to reducing its steel capacity by 140 million metric tons by 2021. It claimed 65 million tons in 2016 and has mothballed 42 million tons of a ...

　　 Xinyue Steel have export hundreds of containers of adjustable steel props to middle east, south Africa in 2017 already. We’ll have a brief introduction about adjustable steel props’application, components, surface treatment, advantages. 　 　Application: used for vertical supporting of slab framework and beam, for any shape building construction, foe different height of buildings within its range. 　 　Components: adjustable vertical pipe support include inner tube, prop base plate, prop nut, prop thread and lock pin. 　 　Surface treatment: dipped painting, powder coated, galvanized. 　　Advantage: 　　1. Simple and reliable structure 　　2. Easy to erect and dismantle 　　3. Strong loading capacity 　　4. Economical construction equipment 　　5. Easy to get through 　　6. Length adjustable.

　　We’ll have a general clue about frame scaffolding system’s application, main components, and our advantage about frame scaffolding system. 　　Application: slab support, staircase, stage platform, bridge support, mobile tower,etc. 　　Main components: frame catwalk, joint pin, cross brace, lock pin, base jack, u-head and caster. 　　Our advantages: 　　1. Mobile convenience 　　2. Easy to assemble and dismantle 　　3. Safety and stability 　　4. Strong loading capacity 　　For more details： 　　Email me:sales@xysteelpipe.com 　　Website: www.xysteelpipe.com