SSAW Pipe

    The casing pipe coupling is the necessary workpiece for connecting the two tubing sleeves. Manufacturing methods is the same as seamless pipe , the domestic use of j55, n80Q and other special steel manufacturing. The ends of the steel pipe have internal threads for connection to the upper and lower tubing. In order to ensure the sealing of the joint, the thread precision has more stringent requirements.     First, use     Used to connect the upper and lower tubing.     Second, the type     Domestic casing pipe is divided into non-thickening casing pipe coupling and thicker oil casing at both ends of the collar.     Third, the processing process     Car end face - car outer circle - boring - car thread - inspection - phosphating

    N80 steel pipe is generally casing pipe. N80 casing pipe is an important equipment for oil drilling, and its main equipment also includes drill pipe, core tube and casing, drill collar and small diameter drilling steel pipe.     Domestic casing to geological drilling steel by hot-rolled or cold drawn, steel with "geological" (DZ) said that the commonly used casing steel DZ40, DZ55, DZ753 species.     (1) Casing pipe mainly imported countries: Germany, Japan, Romania, Czech Republic, Italy, Britain, Austria, Switzerland, the United States, Argentina, Singapore also imports. Import standard reference to the American Petroleum Institute Standard API5A, 5AX, 5AC. Steel grade is H-40, J-55, N-80, P-110, C-75, C-95 and so on. Specifications for the main 139.77.72R2,177.89.19R-2,244.58.94R-2,244.510.03R-2,244.511.05R-2.     (2) API provides a length of three: R-1 is 4.88 ~ 7.62m, R-2 is 7.62 ~ 10.36m, R-3 is 10.36m to longer.     (...

    Casing pipe with a total of H40, J55, K55, M65, N80, L80, C90, T95, C95, P110, Q125 more than twenty different steel grade and type. In order to distinguish between different grade of steel strength, thread type, respectively, with different color code and symbols represent represent steel grade and thread.     Color label and english letters at the back of the 2 or 3 digits said the minimum yield strength steel grade oil casing, such as J55 said its minimum yield strength of 55000 pounds per inch (379 mpa) up to 80000 pounds per inch (552 mpa), 2 P110 minimum yield strength of 110000 pounds per inch (758 mpa) up to 140000 pounds per inch 2 (965 mpa).H, J, K, N for general strength oil bushing, C, L, M, T for qualified yield strength oil bushing, which has certain anti-sulfur corrosion resistance.

    The economic benefits of aluminum alloy drill pipe are mainly manifested in the following aspects:     ① Get a very high technical - economic benefits, although the payback period is relatively long, but more competitive than steel drill pipe;     ② Shorten the drilling time, no special requirements on the rig;     ③ Aluminum drill pipe is mainly used for drilling depth greater than 2km, lifting operation for a long time of the well, can increase the mechanical drilling index. The increase in the material of the depreciation pipe can be compensated by the reduction of the lifting operation time;     ④ Reduce the weight of drilling equipment, saving materials and transportation costs, reduce the maintenance and production costs of the rig;     ⑤ Aluminum drill pipe low cost, long service life.     http://www.xysteelpipe.com

    There are many ways to connect carbon steel seamless tube , and now several commonly used methods are listed:     a, compression type; b, live connection; c, compression; d, push; e, taper thread; f, socket welding; g, live flange connection; h, welding and welding and the traditional combination of the derivative Series of connections.     Different connections, because of their different production principles, its application areas are also different, but in general have one thing in common is the easy installation, solid and reliable.     Here are some of the more common connection to do a brief introduction:     1. Compression: the pipe into the pipe fittings, fastened by the nut, with a spiral force to the mouth of the casing through the seal ring compression, sealing effect, to complete the connection pipe.     2. Welding type: the end of the pipe processing bevel, with manual or automatic welding on the pip...

    No doubt that there are lots of treasures under the deep ocean, especially for various gas which are our needed nowadays. However, due to the typical character of deep ocean different from mainland, it is hard to get the treasure out. Thus, requirements for various pipes like seamlesssteel pipe and ERW steel pipe would be serious than ever in order to have a good features for working beneath the deep ocean.     Compared with the shallow sea environment, there are enormous pressures in the deep sea as well as serious problems of temperature, salinity, dissolved oxygen, pH, biological fouling, metal ion deposition and surface flow rate, which bring great difficulty for deep sea's research and development as many mature technologies in the sea and in the shallow sea can not be applied in the deep ocean. Deep sea materials, related to high strength steel, corrosion resistant alloys and non-metallic materials, are mainly used in deep-sea oil platforms, deep-sea oil ...

    Reducing flanges are designed for when there is a change in the pipe size. A reducing flange consists of a flange with one specified diameter having a bore of a different and smaller, diameter. Except for the bore and hub dimensions, the flange will have dimensions of the larger pipe size.     Weld Neck and Slip-On: Connect the flange sides that match the higher diameter of pipe and complete welding process. Repeat the welding process for the smaller size of pipe on the other side of the reducing flange. Now both sizes of pipes are connected through the reducing process. Take enough care to ensure that the inside diameters of the pipes are properly aligned with the ID of the Flange on both sides.     Threaded Flange: First connect any one size of pipe by threading to one side of the flange. Make sure that the pipe is inserted to reach the required depth inside the flange. Repeat the same process for the other size of the pipe.     In hig...

    Cooling bed is a key link in steel pipe production line for guarantee the final quality. So there is essential to have some basic knowledge for those types of cooling bed for seamless steel pipe in order to produce high quality product.     Most of us would familiar with single chain cooling bed and double-stranded cooling bed, so there would ignore the introduction about these two types. And today the main core is the new chain cooling bed and stepping rack-type cooling bed.     The new chain cooling bed     No doubt that with the development of advanced technology, the new chain cooling bed has combined good feature of single and double cooling bed as well as other special characters which would good for the production of the steel pipes. New chain cooling bed has been divided into uphill and downhill. The positive and negative interaction make the steel pipe continue to rotate forward and do climbing which is good for quality. Downhil...

    Edge milling machine of dsaw pipe is divided into XB series edge milling machine, self-driven milling machine, is a new generation of milling, the domestic alternative planing machine's most fantastic equipment.     Use of edge milling machine:     Commonly used in the boiler, pressure vessel manufacturing industry, shipbuilding, electricity, petroleum, chemical machinery, engineering machinery manufacturing, all kinds of low carbon steel, stainless steel and aluminum plate in the welding before the groove processing, type groove can be a milling molding, compared with the planing machine, with low prices, low energy consumption, high efficiency, high brightness, easy operation and maintenance and other advantages.     Edge milling machine and the traditional milling machine:     The rail device is detachable, and after heat treatment, the bed structure is reasonable, the milling head is running more stable and reliable, its...

    1. The quality inspection of the dsaw pipe shall be carried out by the technical quality supervision of the supplier.     2. The supplier must ensure that the delivery of the dsaw pipe meets the specifications of the corresponding product standard. Providers have the right to check and verify the corresponding product standards.     3. DSAW pipe inspection items, sampling quantity, sampling parts and test methods, according to the corresponding product standards.     4. DSAW pipe should be submitted in batches to check, the batch rules should be consistent with the corresponding product standards.     5. DSAW pipe test results, one does not meet the product standards of the rules should be unqualified pick out, and from the same batch of dsaw pipe, take the double the number of samples, reassessment of unqualified items. The results of the re-inspection (including any of the requirements of the project test) failed, then ...

    ERW carbon steel pipe vs spiral pipe:     First, the difference between the production process     ERW carbon steel pipe is the hot rolled coil through the continuous roll forming, the use of high-frequency current skin effect and proximity effects, so that the edge of the coil heat fusion, pressure in the squeeze roller under pressure welding to achieve production. Therefore, erw carbon steel pipe residual stress is small, through the weld heat treatment, sizing, straightening, water pressure and other processes, the residual stress to further release and reduce. Practice has proved that erw carbon steel pipe in the storage and use of residual stress on the steel pipe does not affect. Without any welding wire, the weld in the physical properties and chemical composition with the plate exactly the same. The quality of the erw carbon steel pipe depends on the quality of the sheet.     Spiral steel pipe through the unit spiral rotary wel...

    Welding advantages of erw carbon steel pipe:     Resistance welding of erw carbon steel pipe is the welding of the workpiece will be pressed between the two electrodes, and the application of current, the application of current flow through the workpiece surface and the adjacent area of the thermal resistance generated by heating it to the molten or plastic form, so that metal connection of a way.     The advantages of erw carbon steel pipe     1, Heating time is short, heat concentration, so the heat affected area is small, deformation and stress is also small, mortals do not have to adjust after welding and heat treatment process.     2, Nugget composition, has been surrounded by plastic ring, melting metal and air barrier, metallurgical process is simple.     3, Do not need welding wire, electrode and other filler metal, and oxygen, acetylene, hydrogen and other welding materials, welding costs low.   ...

    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 characteristics such as hardness and brittleness. Steel water tub...

    Hot bending needs local heating then bend the steel pipe to a designed radius using a specified bending method. When the bend radius are too small, manufacturers are tend to choose hot bending.     For curving HSS members the use of induction bending is typical, with an induction heating coil placed around a short length of the member. Complete stress relief of the HSS will occur during this extreme heating.? This process should produce beneficial metallurgical changes in the heated and bent regions, similar to hot forming (described above).     In China, a post-production process is used to locally modify the walls of cold-formed HSS by applying local induction heating to a region of an HSS where a connection will subsequently be made.     http://www.xysteelpipe.com/info/A-guide-to-Hot-Bending-524-1.htm

    Xinyue Rectangular and Square steel tube base is aiming to build a safe, efficient, harmonious construction world hand in hand with builders, supply relevant construction materials .     For square and rectangular steel tube, we can produce:     OD:     For square tube: 10 MM * 10 MM to 800 MM *800 MM     For Rectangular steel tube: 10MM *20 MM to 1000 MM *1200 MM     Wall thickness: 0.5 MM to 50 MM     Steel Grade: S235JR, S275JR, S355JR, STK400, STK500,ASTM A500, SS330,SS400,SS500,ST52,ST37 etc.     Technique: ERW welded, seamless, extruded,cold rolled     Surface Treatment: HDP, painted     Length: up to 12M     http://www.xysteelpipe.com/info/A-guide-to-Rectangular-and-Square-steel-tube-523-1.htm

    Chinese Ministry of Environmental Protection have strict control over air pollution, which is worsen during winter. Chinese steel manufacturers are feeling the pressure from the government and will 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 raw material production by 33 million metric tons in this winter. Cuts of 30-50 percent in utilization rates at some Chinese steel manufacturers 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 steel manufacturing capacity, reports S&P Global Market Intelligence.     The Chinese central government has committed to cutting its steel capacity by 140 million metri...

　　Pipe is tube which complied with ASNI B 36.10 and B36.19 (for stainless steel). Its diameter represented with NPS which is different from actual diameters. 　　Pipe wall thickness is indicated by the schedule No. And the same NPS number can have various types of Sch. No. Such as STD, thickened wall thickness (XS) and special thick wall thickness (XXS), and so on. 　　Tubing refers to finished product meet the standard PG-27.2.1 [Outer diameter D≤5in.(127mm)], and which according calculate formula to select diameter, thickness and according the design. 　　Piping usually refers to finished product which calculated by PG-27.2.2 formula to select NPS and Sch. No, and follows the design requirements. 　 　Sample of description 　　Nominal diameter is not the real diameter, real diameter is always larger than the nominal diameter. For example the pipe nominal diameter in 4 inch, wall thickness SCH 40, means the pipe real out diameter is 4 1/2 inch (114.3 mm), real wall thickness...

　　Installation would be an important part among the steel pipe’s production and selling. As ERW steel pipe supplier or lsaw steel pipe’s manufacturer, it is necessary to make sure the easy installation between the joint of every steel pipe. 　　 Troubles we need to pay attention: 　　A: we should guarantee it must be stiff enough during the bury to hold pipe ring’s shape to near circular. 　　B: Thick walls to provide equivalent stiffness is also quite important for various steel pipes. Due to the pressure steel pipes holding during the transportation, so in order to make sure the holding pressure, thick walls are necessary not only internal fluid pressure but also external pressure coming from cars and other products. 　　How to increase the ring stiffness for installation? There are lots of options available. We can do this job from longitudinal strength and smooth outer surface. Thus we can solve these troubles and let steel pipes have relative character to hold on t...

　　Q: What would we care about except the quality of ERW steel pipe? 　　A: Long service life would be an important factor for a kind of ERW steel pipe when it applied in engineering project as this means saving money to fix it and change it. 　　Steel pipe, used in water, oil and gas transportation, is necessary to have a relative long life service. As there are advantages for long service life: first of all, we should know that it would cost human resource as well as cost if we have to change it often. What’s more, it would influence the basic usage for customers if we change it often which would damage the whole process for customers sometimes. 　　Plastic or wood pipes would not so strong for the cars’ weight when we use them underground. So that steel pipe, with its hardness, is the top choice for this situation. Of course, because of the external corrosion and internal abrasion. The service life of steel pipes would be increased by the usage of proper coating and ca...

　　Before you import steel, there are some thing you need to know. 　　First, what’s the purpose of these steel pipes. You want to use the cargo as building material for construction, or for transportation, such as gas, natural gas, petroleum of other usage. For different usage need different kinds of steel pipe. 　　Second, you should know some general kinds of steel pipe. Based on technique, there are two kinds of steel pipe, one is seamless steel pipe, the other is welded steel pipe. We can tell the difference literally. Seamless is the one without weld seam, and welded steel pipe is the one with one or multi-welded seams. But you must aware that there are two kind of seamless steel pipes.There are some factories who made fake seamless, which I mean, they used welded steel pipe, and then polish the welding beam, to make the welded steel pipe looks like seamless steel pipe, there is no impact on performance, but the cost for the fake one is lower than real seamless stee...