Tianjin Xinyue Steel

Steel pipe is not the only pipe. But not all transportation job need steel pipe, I,  ERW steel pipe , have to remember that. Under this situation, introducing technology and make development in steel pipe would be an eternal topic for the whole family of steel pipes. Before I born, I seem to have run in a great circle, and met myself again on the starting line. That's a symbol of the final end product for me. There is decision you have to make before your birth, and every time you make an important choice, the part of you left behind continues the other life you could have had. For me, ERW steel pipe, I've chosen become the welded pipe so there is an operation for me in my body as there is a scar in there. Of course, this decision gives me the duty for being used for low pressure liquid delivery, such as water, gas, and oil. Oil drilling and machinery manufacturing, etc. too. In addition, wall thickness, out diameter, steel grade and so on are also determined with the ...

It seems like there is a big difference in the same type of steel pipes like the seamless steel pipe, nevertheless the different category like the welded pipe and seamless steel pipe. Today, we have to comparison of the  LSAW steel pipe  belonging to welded pipe and SMLS steel pipe belonging to seamless steel pipe in aspect of wall thickness. First of all, this is the picture for LSAW steel pipe’s wall thickness with various model. Then, this is the picture for SMLS steel pipe’s wall thickness with various model. From these two pictures, it is no hard to figure out that there is huge difference even for the same type so steel pipe. We could see that there is same model for the LSAW steel pipe and SMLS steel pipe with the parameter of 355.6mm outside diameter. However, the wall thickness is different for them. SMLS steel pipe’s wall thickness is 5.2mm to 34.9mm while SMLS steel pipe’s wall thickness 6.35 to 50.8mm. Even the outside diameter is same, there is still hu...

The components of the pressure pipe are generally standard parts like the astm a53 pipe or astm a106 pipe, so the design of the pressure pipe components is mainly the selection of standard parts, pipeline pressure level is to determine the level of its standard parts to determine. The pipeline's pressure rating consists of two parts: Nominal pressure standard pipe nominal pressure rating; Wall thickness rating of standard pipe in terms of wall thickness. Pipeline pressure rating: Pipeline usually by standard pipe nominal pressure level and wall thickness level together to determine the characteristics of the pipe can be reflected pressure characteristics of the pipe called the pressure rating. Customary to simplify the description, often the nominal pressure pipe fittings in the pipeline called the pressure level. The determination of the pressure level is the basis of the design of the pressure pipeline and also the core of the design. It is the design precondition fo...

Low carbon steel pipe with ceramic is a combination of ceramic and metal to form a composite pipe. The ceramic pipe combines the advantages of high hardness, good chemical inertness and steel. It has excellent wear resistance, corrosion resistance, heat resistance and thermal shock resistance. Anti-mechanical impact performance for power plant pulverized coal, ash, mine slag, tailings, backfill, coal, ore dressing plant, coking plant coke grain, sintering plant material delivery life of 15 times higher than ordinary steel pipe , Can also be used for liquid aluminum, corrosive media transport. Product performance of low carbon steel pipe with ceramic: 1, Wear resistance: Ceramic composite pipe lined with ceramic content of Al2O3 is greater than 90%, microhardness HV1000-1800, which has a very high wear resistance, the wear resistance than quenched carbon steel ten times better than tungsten carbide drill. 2, Corrosion resistance ceramic is a neutral material, chemical stability...

Heat and lot number equivalent to steel ID card. Heat number refers to the number of furnace steel making furnace, each out of a furnace to do component analysis, heat number is qualitative steel born. Lot number is the heat treatment of steel labels. Each batch of products to do mechanical analysis, process performance inspection. Heat and lot number is proof of steel traceability. Heat number is the number of refining a number of steel furnace, according to the number of the furnace can check the quality of the furnace steel and the quality of the situation, because the refining of each furnace steel laboratory data records. Each out of a furnace to do component testing and mechanical testing, different furnace out of the steel composition and performance are different. Lot refers to the same batch in the same batch of steel production, each batch of products have to do mechanical analysis, inspection of process performance, lot number is proof of steel development. According ...

Actually, steel pipe would have their life time so that we cannot hope that they can work for us all the time. They may die whether seamless steel pipe or ERW steel pipe,  SSAW steel pipe  if we don’t repair them or cure them when we figure out that they are ill. Rust would be one of the common ill for steel pipe. First of all, we should figure out the etiological diagnosis for this ill. We know that steel would rust when they exposure to water, air. Of course, the more complex, the bad the ill. Under this situation, we should take different measures for different steel pipes when they transported to different environment. Then we should find the method for them. The main use of wire brush and other tools on the polished steel surface, you can remove the loose or tilt the oxide skin, rust, welding slag and so on. For example, galvanized steel pipe would be one of the way to solve the problem of rust under exposure. In addition to. Spraying shot rust is another way to ...

Clients would think about the quality guarantee period for steel pipe if they’ve made by similar material and process. What would you choose from  seamless steel pipe , ERW steel pipe and galvanized steel pipe for the engineering project. Generally speaking, we should account the different situation for different choice. High pressure work environment would choose seamless steel pipe due to its special production process. Of course, for general residential water pipes, editor thinks that galvanized steel pipe is also nice. And here is the trouble: the protective zinc layer will erode due to constant exposure to moisture. How do you think about this question? Generally speaking, all kinds of pipelines such as wood, lead, copper, paper fiber, concrete and plastics can be used to transport water for residential customers. And all of them need to be exposure into the air, moisture. So this problem is not just for steel pipe. Under this situation, the zinc would protect the ste...

General seamless stainless tube production process can be divided into cold drawing and hot rolled, cold rolled seamless steel tube production process generally more complicated than hot rolled, three-roll rolling tube billet must first, after the extrusion sizing test, if there is no response after crack on the surface of pipe have to be cut after cutting machine, cutting grow about a meter of billet. And then enter the annealing process, annealing with acid pickling liquid, pickling when should pay attention to whether there is a lot of bubble surface, if there is a lot of bubbles show that the quality of the steel tube are not up to the standard of the response. Appearance on cold rolled seamless steel tube is shorter in hot rolled seamless steel pipe, cold rolled seamless steel tube wall thickness generally smaller than hot rolled seamless steel tube, but the surface looks brighter than the thick wall seamless steel tube, not a lot of rough surface, the diameter is not a lot of ...

Now the production of  seamless steel pipe , mostly the use of hot-rolled technology, because the temperature is high, so the deformation resistance is relatively small, are generally used to complete the rectification rolling plate rolling process, in this operation, but also need to take into account the steel Of the specific thickness, if it is relatively low precision requirements, there will be no plate-shaped problems, mainly dominated by control, that is, in terms of temperature control, but also a must be considered at the same time It can be said that this part of the consideration is also very important. The market for seamless steel tubes have distinctive quality requirements, especially for different alloy elements can not be careless, of which the harmful elements must be strictly controlled, but also need to take into account the pipeline material after the completion of the production of dangerous And defects, such as possible cracks, internal break, externa...

API mild steel pipe is widely used in lots of industries. However, a lot of customers still don't know kinds of API steel pipe and their usage. Here we are instroduce you the detail of API steel pipe. API line steel pipe API line steel pipe is the line pipe that meets the American Petroleum standard. Line pipe is used for transportation of oil, gas and water to the oil and gas industry enterprises. Ends of pipe include plain end, threaded end and socket end; their connections concludes end welding, coupling, socket connections. With the development of technology, API line steel pipe's range of applications is expanding gradually, especially in the large-diameter disaster. Coupled with the factor of cost, welded pipe have a dominant position in the field of line pipe, limiting development of stainless steel seamless line pipe. During 2004, production of seamless line pipe is about 400,000 t, ranging from X42 to X70. API line steel pipe is divided into onshore line steel...

1. Low temperature embrittlement of stainless steel pipe In low temperature environment, the deformation energy is small. In low temperature environment, the elongation and the decrease of the shrinkage of the section are called low temperature embrittlement. And more in the ferrite series of body-centered cubic tissue. 2. Low temperature processing of stainless steel pipe The martensitic stainless steel is quenched from austenitizing temperature and then cooled to a very low temperature to promote the martensite quenching method. Suitable for easy production of residual austenitic stainless steel. Stainless steel pipe  at low temperatures, resistance, linear expansion coefficient, thermal conductivity, mass hot melt and magnetic will change greatly. Resistance, linear expansion coefficient at low temperature becomes smaller; thermal conductivity, mass heat capacity at a low temperature drastically reduced. On the low temperature state, the ferrite stainless steel pipe...

1. Low temperature embrittlement of stainless steel pipe In low temperature environment, the deformation energy is small. In low temperature environment, the elongation and the decrease of the shrinkage of the section are called low temperature embrittlement. And more in the ferrite series of body-centered cubic tissue. 2. Low temperature processing of stainless steel pipe The martensitic stainless steel is quenched from austenitizing temperature and then cooled to a very low temperature to promote the martensite quenching method. Suitable for easy production of residual austenitic stainless steel. Stainless steel pipe  at low temperatures, resistance, linear expansion coefficient, thermal conductivity, mass hot melt and magnetic will change greatly. Resistance, linear expansion coefficient at low temperature becomes smaller; thermal conductivity, mass heat capacity at a low temperature drastically reduced. On the low temperature state, the ferrite stainless steel pipe...

ERW steel pipe  is able to meet the oil, natural gas pipeline. Characteristics of ERW Pipe (1) ERW steel pipe welding mechanism made gratifying achievements, and to the theory as a guide for the optimization of the welding process, all optimized parameters, the computer control, to mention Song of weld quality. (2) weld annealing using fluorescence line positioning technology, so that annealing strictly specified site, so that weld quality further improved. (3) early ERW pipe weld zone the ductile-brittle turn temperature FATT value is much higher than the base metal, the maximum difference of 40-50 degrees. Metallurgical and technological progress, the FATT the value of the pipe base metal can be as low as about -70-80 degrees, so even if the two have some difference, able to meet user requirements. (4) the application of the technology of automated ultrasonic testing, ultrasonic automatic tracking online detection can be achieved, so that the weld formed to further...

Straight seam pipe in the production, the wrong side have occurred, many of its influencing factors.  In production practice, often by the wrong side of the error so that steel pipe demotion.  Therefore, it is necessary to analyze the cause of the wrong edge of the straight seam pipe and the precautionary measures. 1.the sickle bend steel strip is the most important factor in the wrong side of the pipe.  In the spiral pipe molding, the sickle bend steel strip will continue to change the forming angle, resulting in weld gap changes, resulting in open seam, the wrong edge or even take the edge.  Seriously affecting the quality of the steel pipe, so the observation of the sickle bend after the uncoiling of the steel strip, by controlling the vertical roller so that the disc can be cut off part of the sickle bending and forming angle of the continuous control and correction is to reduce the production process sickle bend The wrong way to create an effective way....

Definition: Carbon steel: mainly refers to the mechanical properties depend on the carbon content of steel, and generally do not add a lot of alloying elements of steel, sometimes called plain carbon steel or carbon steel. Carbon steel, also known as carbon steel, carbon content WC less than 2% iron carbon alloy. Carbon steel in addition generally contains a small amount of silicon, manganese, sulfur, phosphorus can be divided according to the use of carbon steel carbon structural steel, carbon tool steel and free-cutting structural steel three carbon structural steel is divided into structural steel and machine structural steel, which can be divided into low carbon steel (WC ≤ 0.25%), medium carbon steel (WC 0.25% - 0.6% ) and high carbon steels (WC> 0.6%). According to phosphorus and sulfur content, carbon steels can be divided into ordinary carbon steels (phosphorus and sulfur are higher), high quality carbon steels (phosphorus and sulfur are lower) high-quality steel (phosp...

There are lots of materials we can use for construction foundation, such as timber piles, concrete piles and steel piles. What’s the difference between them? And finally which one would be better for us? According to the ratio of using  spiral welded pipe , steel products have their special advantages. First, timber piles differ from concrete or steel piles as they are naturally made instead of man-made. This means they are cheaper than concrete or steel piles. Because of the natural characteristics of timber, the density or unit weight of timber piles is variable and highly dependent on the species, specific gravity and water content of the timber itself. Under this situation, we cannot make sure the quality when they face with the hurricane which is its shortage. Of course, it is very easy of corrosion and rust which has not long life service. What’s more, concrete piles are both similar and different to timber piles and to steel piles. Concrete and timber piles are co...

Producers of consumer products like the steel pipes use performance-based standards due to the safety decided by quality. Under this situation, we should make a list for the concern of the product before we manufacture it, for example, the production notice for the  seamless steel pipe . When the main target is people's safety, and the product is steel pipe, the committee on construction equipment, playing pressure, and facilities stands ready to consider any technology that may reduce the risk of leak injury on transportation. Thus, we should take notice for the surface treats for steel pipes like the Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement. Of course, how could we forget the test for those steel pipes after the production. Like the Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending...

We would like to say that the building’s exterior is beautiful when we see one. Of course, the exterior good look is also concluding the shape of various steel pipes like  ERW steel pipe , spiral welded pipe which are used for water, oil and gas transportation. No matter which kind of steel pipe you choose for your engineering project. The poor-quality steel pipes would be ousted from the group. So how could we figure out our demands for exact engineering project or estimate houses? Comparison would be one of the top choice for us. Straight seam high frequency welded pipe, made by welding and induction, is classified different exposure to welding in two forms, hot and cold rolled. For hot rolled coils as raw materials, with other processes like continuous molding, welding, heat treatment, sizing, straightening, there is no doubt that ERW steel pipe is used for low pressure liquid delivery, such as water, gas, and oil. For spiral welded pipe, with the characters of short,...

Dealing would be perfect with product’s completion. So for the foreign business in steel pipes’ industry, whether seamless steel pipe,  ERW steel pipe  or other steel pipes, it is necessary to have the details about the inquiring and ordering requirement. Here are the aspects for the product’s list: Designation is the first step before shipping. Among the list of designation, specification, edition, grade, type and part and No. Purchaser's own specification covering and so on are needed here. Specific requirements are also necessary. For example, method of manufacture(seamless, electric-resistance welded), type of manufacture and type of end product are important factor to list on it. Of course, dimensions, quantity, inspection, finish and coating, delivery requirements, end use and other needed list should be here for clients too. Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com .

The carrying work of water and gas for residential homes and commercial buildings would be depend on various pipes like  seamless steel pipe , ERW steel pipe, galvanized steel pipe as well as black steel pipe. We know that water and gas would be essential for human needs and what's the difference for different pipes? Today, we would have a comparison for galvanized steel pipe and black steel pipe. Galvanized pipe: Covered with a zinc material, galvanized steel pipe would be have the character of more resistant to corrosion. At first, galvanized pipe is just used to carry water to homes and commercial buildings. The zinc also prevents the buildup of mineral deposits that can clog the water line. Galvanized pipe is commonly used as scaffolding frames because of its resistance to corrosion. Black Steel Pipe: Different from galvanized pipe, black steel pipe is non-coated. The dark color comes from the iron-oxide which is formed on its surface during manufacturing. The purpose of...

Contact Email: marketing@xysteelpipe.com . Check  www.tjxysteel.com  for more info. With the rapid development of economy and the continuous improvement of the energy demand, the pipeline as the oil and gas resources has developed in recent years. A number of medium-caliber ERW line pipe unit was completed and put into operation.ERW line pipe has been widely used in the oil and gas field gathering pipelines, oil and gas Spur. This article will focus on the circumferential residual stress on the impact of ERW line pipe manufacturing process and final product quality and control aspects of the problem. ERW pipe forming process can be divided into two phases: the first stage of deformation; the second stage for reducing distortion. In both phases, the steel pipe inner layer is always affected by the circumferential compressive stress and compressive deformation. The outer layer of fine molding of the bending process by weeks to the tensile stress and extension deformatio...

Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com . Water pipes are tubes carry pressurized fresh water to buildings. The erosion resistant property of steel pipes and tubes makes a favorite for water system. Steel pipes are capable of handling high velocity and turbulence without effected the wall thickness. It is well known that steel is one of the leading materials in the modern industry and for many years it has been the favored material for water pipes. Such a large application of steel water pipes and tubes are stipulated by their optimal excellent properties: high values of strength and fracture stability in combination with the reasonably good ductility and flexibility, tensile strength, elongation and reduction in area. Properties of steel water pipes: Stainless steel water pipes sustain longtime exploitation such as friction and corrosion as well as aging. Even after years of use, these pipes don’t practically change characteristi...

Different types steel pipe would have different function when they produced by manufacture with different production process. For example, SMLS Steel Pipe and  seamless steel pipe  would applicable to the general structure, mechanical structure, water wall panel, super heater, boiler, seamless steel tubes, and to transport liquid, gas, oil etc. So here is a list for the production process points for steel pipe: Visual inspection: First step for original materials produced steel pipe is the professional technicians’ check for some basic parameters, which is in order to guarantee the basic quality of the steel pipe. Ultrasonic flaw detection: We could know the inner trouble for steel pipes through the development of internal and external welds of base metals and the 100% check of welds. X-ray inspection: 100% x-ray from internal and external industrial television inspection image processing system for each kind of steel pipe is to ensure the use of detection sensiti...

The round steel tube is a steel that is open at both ends. It has a hollow concentric circular section, which is quite large relative to the circumference.It can be used in pipelines, thermal equipment, machinery industry, petroleum geological drilling, containers, chemical industry and special applications. Classification of round steel pipe According to production methods can be divided into seamless round steel pipe and welded round steel pipe. Seamless round steel pipe manufacturing process Tube Blanks - Inspection - Peeling - Inspection - Heating - Perforation - Pickling - Grinding - Lubrication Air Drying - Welding Head - Cold Drawing - Solution Treatment - Pickling - Pickling Passivation - Inspection Welding round steel pipe manufacturing process Strip - Inspection - Shear - Length - Qualitative - Welding - Smoothing - Length - Inspection Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com .

Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com . Welded skill has matured in the world and welded steel pipe from  ERW steel pipe  to galvanized steel pipe has been used widely in multifarious engineering project. Today, we’ve got a list for weld pipe. Welded pipe includes LSAW steel pipe, ERW steel pipe and SSAW steel pipe in Threewaysteel. SSAW Steel Pipe: This kind of steel pipe can convey fluid, metal structures, pile and so on. And thus they are widely used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction. LSAW Steel Pipe: Longitudinal Submerged-Arc Welded Steel Pipe Process: LSAW-UO(UOE), RB(RBE), JCO(JCOE, COE); DSAW-Double Submerged Arc Welded Usage: Used for low pressure liquid delivery, such as water, gas, and oil. Standard: API 5L, API 5CT, ASTM 53, EN10217, DIN 2458, IS 3589, GB/T3091, GB/T9711 ERW Steel Pipe: Electric Resist...

Large diameter steel pipe is the pipe material with outer diameter greater than 1000mm, steel ingot is made of perforated or solid billet through the capillary tube, and then hot rolled, cold-rolled or cold call is made. Large diameter steel pipe is coated large diameter spiral welded pipe and high-frequency welded pipe made of plastic coating on the basis of the maximum diameter of the nozzle. 1200mm, can be coated with polyvinyl chloride according to different needs (PVC), polyethylene (PE), epoxy resin (EPOZY) and other various properties of plastic coating, good adhesion, corrosion resistance, can be resistant to acid , alkali and other chemical corrosion, non-toxic, does not rust, abrasion resistance, impact resistance, permeability, smooth pipe surface, do not adhere to any substance that can reduce transmission of resistance, increase traffic and transportation efficiency and reduce transport pressure loss. Coating solvent-free, no leaking substances, and therefore does...

Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com . Each kind of test measurement such as Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test would be necessary for guarantee of the high quality of steel pipe like  seamless steel pipe , galvanized steel pipe. There are some characteristics for visual inspection of non-destructive testing: 1. Weld surface defects test: surface cracks would be the first step for check of the steel pipe and then the impermeability and weld quality of the leak. 2. Detailed exam for raw material for steel pipe’s production, such as the surface cracks, peeling, cables, scratches, dents, bumps, spots, corrosion and other defects. 3. Cavity detection. This test would carry out according to the engineering project’s demand and the engineer’s requirement. 4. Additional material inspection. Inspect the product for dust, foreign ...

Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com . There is the process for roll grove for the making of steel pipe range from  seamless steel pipe , ERW steel pipe, galvanized steel pipe and so on. As steel pipe supplier in China, Tianjin Xinyue Steel Group knows deeply that high quality roll grove would have important roll for best quality steel pipe. In making process, Xinyue steel describes the preparation for the special tools used to steel pipe’s production process with the ring-type roll and the design of and process method for the groove cam template. As we all know that“Rolling groove cracking” is the root cause of insufficient welding strength. Under this situation, this is no doubt that we would avoid this trouble as better as we can in order to have high quality steel pipe for customers. Thus we should figure out the working principle very clearly. Of course, the steel pipe’s structure should be known clearly too.

Controlling quality of raw material and production process is in order to guarantee the high quality of various steel pipes from seamless steel pipe, ERW steel pipe,  SSAW steel pipe  and so on. For Tianjin Xinyue Steel Group, there are various tests methods for steel pipe. From Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, Hydrostatic Test to X-ray Test, we just need to make sure the check work of the steel pipe. Soak inspection: We would take some liquid physical properties like permeability to figure out there is defects or not. And this method would contain color detection and fluorescence detection. Ultrasonic inspection: It is another way we used often for steel pipe’s quality check. With the help of homogeneous media, like metal, we can use this character to have figure out the internal defect detection. Any part of the defect can find the direction of the defect more sensitively, but the nature, shape and...

Mechanical properties of square hollow section 1. The analysis of hardness of square hollow section Hardness is a measure of softness and hardness of metal materials. The most commonly used hardness measurement in the production is the press method, which uses indenters with a certain geometric shape to press the surface of tested metal materials and obtains its hardness based on the pressing degree. The commonly used methods are Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC), Vickers hardness (HV) and so on. 2. The analysis of plasticity of square hollow section Plasticity refers to the plastic deformation(permanent deformation) of metal material under the action of the load, which can not be damaged. 3. The analysis of fatigue of square hollow section The strength, plasticity, and hardness which we discussed above are the mechanical properties of the metal under static load. In fact, many machine parts are working under cyclic loading, which will lead to fati...

Check www.tjxysteel.com for more info. Contact Email: marketing@xysteelpipe.com . 1.Precision steel pipes appear just in recent years, and there are strict tolerance and roughness between the inner hole and the outer wall size. 2. The main features of  seamless steel pipe  are welding without seam and can bear great pressure. The products can be made from rough casts or cold drawn parts. Cold drawn precision steel pipe features: 1). Have a smaller diameter. 2). Can be made in small quantities due to its high precision. 3). Finished cold drawn products have high precision and good surface quality. 4). The cross section of the steel pipe is more complicated. 5). The steel pipe has superior performance and its metal is relatively dense. Hot-rolled precision steel pipes are made from continuous casting round billets or roughed slabs which are heated by walking beam furnace and then put into rough mill after high-pressure water descaling; rough materials ar...