ERW Steel Pipe

    Macroscopic analysis of cracking     Casing pipe crack direction for the horizontal, crack propagation along the circumference, the circumference of about 460mm. The flow can flow from the outer wall of the casing along the middle of the crack into the <24415mm casing, indicating that part of the crack has penetrated the casing wall thickness.     The main process of casing production is as follows:     Furnace refining → continuous casting → ring furnace heating → perforation → rolling → stepping furnace → sizing → sawing → quenching and tempering → straightening → physical and chemical testing → inspection → thread processing → coupling machine tight → water pressure test → Measuring length weighing, marking → packaging storage.     Wherein the continuous casting billet is fed into the annular furnace for about 2.5 hours and then perforated at about 1250 °C, followed by continuous rolling at a sizing temperature of 950 ...

    The steel billet is the product obtained by casting the molten steel produced by the steelmaking furnace. Steel billets from the manufacturing process can be divided into two types: die casting and continuous casting billet, the current casting process has been basically eliminated.     Continuous cast steel billet and rectangular billet mainly carbon steel, low carbon low silicon cold rolled material, high quality carbon structural steel, low alloy high strength steel, special steel as the representative.     Steel billet production process is following:     First, through the steel casting system of continuous casting equipment, directly from the molten steel into steel billet;     Second, the steelmaking system for the production of steel ingots or continuous casting slits through the rolling system of steel processing equipment out of semi-finished products;     Third, the steel production system of steel ingo...

    Notes of erw carbon steel pipe in winter:     First, when positioning welding to increase the welding current, slow down the welding speed, the appropriate increase in the positioning of the cross-sectional area and length, if necessary, preheat.     Second, the slope should not be outside the base material on the arc, arc to fill the need to fill the crater.     Third, as far as possible in the low temperature conditions for bending, correction and assembly of welding parts.     Fourth, preheating before welding, welding process to strictly maintain the interlayer temperature should not be lower than the preheating temperature.     Fifth, the use of low hydrogen or ultra-low hydrogen welding materials.     Sixth, the entire weld should be continuous continuous welding, to avoid interruption.     According to the specific temperature adjustment of the thickness of the pipe, the actual appl...

    The P110 casing pipe has played an important role in well operation. They protect the well from the shallow and shallow layers of the well and can also support oil and gas well oil and gas delivery and drilling. Support the weight of the wellhead and other layers to prevent collapse. And to ensure the well drilling, well well after well completion of the well operation, to ensure that the pipeline can be well oil, gas pumped to the ground up.     As the lifeline of oil well operation, petroleum casing should have higher quality requirements. Because, if the pipeline is damaged under a special kind of reason, it will be possible to directly cause the oil well to reduce its production, or even cause the exploration well to be scrapped directly. Therefore, there are many requirements for the selection of casing pipe, the selection should be based on the different geological, underground pressure to the size of the purchase. Proposed in the purchase of casing pipe,...

    Do you know welded steel pipe has a big family? Today, Great Steel Pipe will introduce the main family member of welded steel pipe for all of you, and they are ERW steel pipe, LSAW steel pipe and SSAW steel pipe.     First of all, we will introduce the ERW steel pipe, it’s widely use for conveying the gas, crude oil and refined oil to the cites. With a short weld seam, high dimensional accuracy, uniform wall thickness, good quality of surface, can bear high pressure and other advantages. But the disadvantage is only can produce the small dimension and thin wall steel pipe, and the weld seam is easily to bring gray spots, not fused and groove corrosion defects.     Next one is SSAW steel pipe, the steel pipe with spiral seam that using strip coil as raw material, extrusion forming under normal temperature, and welding by automatic Double wire double-sided submerged arc welding process. The advantage is can produce a variety of diameter specifications...

    I believe there are many people thought the strength of carbon steel pipe is low. Yes, if the carbon mass fraction is beyond 1%, the strength of carbon steel pipe will decrease. But if the carbon mass fraction in the range of 0.05%-0.1%, the strength will increase with the carbon mass fraction, and it will also affect the hardness, ductility, toughness and weld-ability. Generally, we divide the carbon steel(carbon mass fraction in the range of 0.05%-0.1%) into low-carbon steel (WC ≤ 0.25%), medium carbon steel (WC0.25% -0.6%) and high-carbon steel (WC> 0.6%).     The low-carbon steel is known as mild steel, is widely used for engineering, machinery and architecture, such as bridges, buildings and embankments.     The medium-carbon steel is mainly used for manufacture the active parts that with high strength, such as air compressor, pump valve, impeller of steam turbine and shafts, worms, gears of heavy machine and etc.     The high-ca...

    API 5L? What is this? I guess many people like me will ask what that means when we know the API 5L first time. Today, Xinyue Steel Pipe sharing what is API 5L pipeline.     API 5L is a standard of pipeline that set up by American Petroleum Institute, if you want to use the 5L monogram, you must to apply for certification to the American Petroleum Institute headquarters, and the pipelines at this standard will print this logo if you got the approval. API 5L standard covers seamless steel pipeline and welded steel pipeline, which pipeline mainly use for conveying the oil, water, gas, and other fluids in the natural gas and oil industries. The API 5L standard not only use for pipelines, but also including steel material grade, such as GR.B，X42 ，X46，52，X56，X60，X65，X70 and etc.     API 5L pipeline is preferred in long pipelines due to its inexpensiveness, so it is widely used in gas, water and oil transportation, and it can resist to crack propagation, s...

    Seamless steel pipe is a round hollow section steel pipe, which are widely used for transmission such as petroleum, natural gas, water and other fluid transmission. Also are widely used in construction and as high-pressure steel pipes.     Most common seen technique for seamless steel pipe are hot roll and cold draw. Cold drawn seamless steel pipe’s manufacturing process are much more complicated than hot-rolled seamless steel pipe. Visually speaking, cold drawn seamless steel pipe will be shorter than hot rolled seamless steel pipe. Cold drawn pipe will be thinner, and appearance will be better than hot rolled. Starting form billet, finish as formed seamless steel pipe, after  all kinds of inspection, such as chemical composition analysis, metallographic analysis, tensile test, low temperature impact test, etc.     Believing in Quality foster brand is the soul of Xinyue’s development. We aiming to create a customer satisfaction products. ...

    When Great Steel Pipe manufacture pipe bend, there are some factors will influence the quality of pipe bend. How to solve those problems? High-class carbon steel pipe provider - Prime Steel Pipe will share it for all of you.     1, The role of the tube in the external force M under the role of the outer layer of the lateral wall of the tensile stress & 1 role of thinning, the lateral compression stress. The role of thickening, together N1 and N2 to make the pipe cross-section changes. Based on this factor, the main reason for the decline in the quality of the elbow is the main reason for the RX and SX. Therefore, GBJ235-82, the various pressure levels in the case of the RX value and the amount of lateral thinning are made clear, the purpose is to control the RX With the value of SX, thus ensuring quality.     2, The bending accuracy of the pipe bend is also one of the factors affecting the quality. When we manufacture the bending foot, in additi...

    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 in accordance ...

    Whether viaduct, trestle, or scaffold, strength of these products should be guaranteed when they applied in various functions in our daily life and engineering project. So why should we choose the welded steel pipes like ERW steel pipe? We should discuss this from the strength character in welded steel pipes.     We can take wood pipe, plastic pipe and welded steel pipe for comparison. For example, if we need some pipes for scaffold or buried pipelines. Which one you would like to choose?     Answer is welded steel pipe would be first one choice! Due to its original material, such as steel, carbon, silicon, manganese, sulfur, phosphorus and so on, this gives steel pipes special resist internal and external pressure even with light weight pipe. We should know that minimum yield strength of most pipe-grade steel is 42,000 psi(290 MPa). Higher strength steels are available. Of course, for wood or plastic pipe, they may not can handle a man’s weight whi...

    Excellent equipment guarantee supreme quality, but online inspection is also needed for steel pipes. In Tianjin Xinyue Steel Group, below inspections are most common performed for ERW steel pipes.     1. Online Flaw Detection for steel coils: 100% flaw detection on longitudinal flaws of whole steel coil through longitudinal wave flaw detection method by a combination of pulse reflection probes with 12 channels.     2. Online NTD flaw detection for welding seam: flaw detection for welding seam, stratified detection for heat affected zone, height control for inside burrs, to ensure 100% detecting, tracking, removing the flaws of the welding seam and the inside burrs.     3. Flattening test: flattening test at 0° and 90°during production process to ensure the basic properties of welded steel pipes.     4. Hydrostatic Test: to ensure the height compaction of base metal and welding seam of each steel pipes.     5. Elec...

    As a construction professional with many different projects, searching for a steel supplier can be a time-consuming endeavor. At Tianjin Xinyue Steel, we understand that companies and contractors struggle to find a supplier they can trust. Having faithfully served many projects since 1980, we know what we should do to gain and maintain a long term business relationship.     Experience: A steel company with experience is one that has proven they know what their customers need and know how to provide it. Customer’s feedback is a picture of the company's history.     Diverse Products & Services: A reliable company such as Tianjin Xinyue Steel will offer not only quality products such as steel pipes, beams, and metal decking, they'll also provide services various steel industrial knowledge.     Insurance & Certifications: Given all the dangers and liabilities that come with steel, you should only trust a properly insured and certifie...

    Are you planning to buy steel for a construction project? There is great global demand for steel material, which is beyond its supply for the first time in decades.     Everyone’s seeking opportunities to buy steel in the near future, should start by knowing marketing prices for the following:     Rebar: Steel reinforcing bars are usually sold in fixed length. Prices vary depending on the thickness, width and length. While added features, such as corrosion-resistance,cost more, major construction projects can save by ordering in more quantities.     Beams: The price of beams for 2017 may fluctuate along with the steel market and worldwide demands. Additionally, beam size and weight, installation requirements, and labor rates also affect the final cost.     Sheets: This year, the steel market is expected to see a strong upturn in finished steel sheets. Flat steel products are used in industries such as shipbuilding, automob...

    If you're working in a construction field, you know that there are construction duties beyond workers' strength. Steel pipe is a major components when it comes to building construction. Tianjin Xinyue Steel Group, located in Tianjin. China, explains how a professional steel pipe exporter?can provide a better steel pipe service.     1. Experienced & Professional Engineers: Our production line is equipped with experienced and professional Engineers,     2. Quality Foster Brand, Brand lead to Future: With advanced automatic production line and detailed processing control, Xinyue can produce the first-class steel pipe with stable and reliable performance. Strong believing quality and core technology create brand, Xinyue has never changed the spirit of striving for zero defects products, whatever the world changes.     3. Access To Quality Equipment: When you import steel from Tianjin Xinyue Steel Group, we will show you with quality mach...