Pipes are an essential component in various industries for transporting gases, liquids and solids. Amongst a broad range of pipes, Schedule 20 pipes are popularly used in many applications. In this blog post, we will discuss what Schedule 20 pipe is, its benefits, how it is made and its various uses.

The Advantages of Rectangular Tube for Industrial Manufacturing Industrial manufacturing is essential to the growth and development of any country's economy worldwide. For goods to be produced at a significant pace, the manufacturing industry must have access to top-quality raw materials. One of the most crucial raw materials used in manufacturing is pipes. The market offers various pipe types, including round, square, and rectangular pipes. Rectangle pipes are gaining popularity among manufacturers due to their numerous benefits. This blog post explores the advantages of using rectangle pipes in industrial manufacturing. Consistency and precision are among the factors that make rectangle pipes a preferred choice in industrial manufacturing.

Schedule10 pipes possess unique properties that make them widely used in diverse industries. If you require improved familiarity with Schedule 10 pipe characteristics, uses, and composition, you have come to the right place. This post will comprehensively outline all the essential information regarding Schedule 10 pipes, enabling you to better comprehend their diverse applications.

Steel pipes have various applications in structural engineering, transportation, and manufacturing industries. Pipe sizes are determined based on their outer diameter while the wall thickness determines the inner diameter.

Seamless pipes have emerged as a vital component in several key industries, offering unmatched reliability, strength, and versatility. At Bestar Steel, we take pride in manufacturing high-quality seamless pipes tailored to the specific demands of industries such as petroleum, aerospace, chemical, power generation, boilers, and the military. In this article, we will delve into the diverse applications and advantages of seamless pipes in these pivotal sectors.

Pipeline coating is the most suitable and effective solution to protect ERW/seamless pipes from corrosion, moisture and other harmful chemicals. Coated pipes are the most efficient and cost-effective products used to transport oil, gas, water and other liquids. Coatings provide pipes with a continuous layer of protection to protect them from any harmful effects of corrosion.

Advantages: High strength, weight, and material-saving ability Typical application: large diameter pipes for transporting oil and gas

It includes Drill Pipe, Steel Casing Pipe and Tubing OCTG is the abbreviation of Oil Country Tubular Goods, it mainly refers to pipe products used in oil and gas production (drilling operations). OCTG tubing is typically manufactured based on API specifications or related standard specifications. It can also be considered a generic name for drill pipes, steel casing pipes, fittings, couplings and accessories used in the onshore and offshore oil and gas industry. To control the chemical properties and apply different heat treatments, OCTG pipes are classified into different performance materials with more than ten grades.

Reason analysis: If the welding current cannot be adjusted correctly during welding, two situations may occur: one is to reduce the welding current to prevent the thin metal from burning through. At this time, the thin metal cover cannot be welded to the thick steel pipe; the other is welding Excessive current will burn through the thin metal cover. Solution: ① Adjust the welding current to avoid burning through the thin metal cover. At the same time, use the welding torch to preheat the thick steel pipe, and then use the thin plate welding process to weld the two metal structures. ②Adjust the welding current to suit the welding of thick steel pipes. When welding, keep the residence time of the welding arc on the thick steel pipe at 90% and reduce the residence time on the thin metal cover. It should be pointed out that only when you are proficient in this technology can you get a good welded joint.

(1) Preheating can slow down the cooling rate after welding, make hydrogen diffuse and escape from the weld metal, and avoid cracking caused by hydrogen. It can also reduce the degree of hardening of the weld and the heat-affected zones to improve the crack resistance of the welded joint. (2) Preheating can reduce welding stress. Uniform partial preheating or overall preheating will reduce the temperature of the welding zone between welders (also called temperature gradient). In this way, the welding stress is reduced on the one hand, and the welding strain rate is reduced, on the other hand, thereby avoiding welding cracks. (3) Preheating can reduce the degree of bonding with the welded structure, especially the degree of bonding with corner joints, reduce the occurrence of cracks, and increase the preheating temperature. The selection of welding preheating temperature and inter pass temperature is not only related to the chemical composition of the steel and welding rod, the rigidity of the welding structure, the welding method, the ambient temperature, etc. but also these factors should be considered and determined. In addition, the uniformity of the preheating temperature in the thickness direction of the steel has an important effect on the uniformity of the welding area and the reduction of welding stress. The width of the local preheating should be the degree of welder restraint. Generally, it should be three times the wall thickness around the weld zone, and it should not be less than 150-200mm. If preheating and uneven, not only will not reduce the welding stress but will increase the welding stress.

According to the requirements of the anti-corrosion coating standard for the appearance of large-diameter submerged arc steel pipes, the surface disposal methods of submerged arc steel pipes are improved from time to time 1. Cleaning Use solvents and emulsions to clean the surface of the steel to remove oil, grease, dust, smoothing agent and similar organic matter, but it cannot remove the rust, oxide scale, welding flux, etc. on the surface of the steel, so it is only used as an auxiliary in anti-corrosion homework The trick is also one of the simple maintenance tricks. 2. Pickling Generally, two methods of chemical and electrolysis are employed to pickling. Pipeline anticorrosion only uses chemical pickling, which can remove the oxide scale, rust, and old coatings. Sometimes it can uses as sandblasting and rust removal. Although chemical cleaning can make the appearance reach a certain degree of cleanliness and roughness, its anchor pattern is shallow, and it easily pollutes the surrounding conditions, Meide Steel Control Manufacturing Co., Ltd. recommends against this method. 3. Derusting things Use wire brushes and other things to polish the surface of the steel to remove loose oxide scale, rust, welding slag, etc. Hand-operated tools can reach the Sa2 level for rust removal, and power tools can reach the Sa3 level for rust removal. If the steel surface has adhered to a strong oxide scale, the results of rust removal of the tool will not be expected, and the anchor pattern depth required for anti-corrosion construction cannot be reached. Compared with the original rust removal method. 4. Radiation derusting Radiation rust removal is a high-power motor that drives the radiating blades to twist at a high speed, so that steel shots, steel grit, iron wire segments, minerals, and other abrasives are radiated to the surface of the submerged arc steel pipe under the effect of the strong centrifugal force of the motor, which can not only remove oxides, Rust and dirt, and the submerged arc steel pipe can reach the required average roughness under the effect of the fierce abrasive impact and friction. It is a relatively complete method for removing rust. It is strongly recommended by Meide Steel Control Manufacturing Co., Ltd. After radioactive rust removal, not only can be the physical adsorption effect of the pipe surface be expanded, but also the mechanical adhesion effect of the anti-corrosion layer and the pipe surface can be enhanced. Therefore, radiation rust removal is a fantasy rust removal method for pipeline anticorrosion. Generally speaking, shot blasting should be employed to internal and external surface treatment of pipes, and shot blasting should be used for surface treatment of submerged arc steel pipes.

1. Safety and environmental protection, protect the health of workers.  The alkali-free glass fiber itself has strong tensile force, will not be broken, vulcanized, smoke-free, halogen-free, non-toxic, pure oxygen, non-combustible, and has good insulation characteristics. After the organic sil

1. Forging method: Use a swage forging machine to punch out the end or part of the pipe to reduce the outer diameter. Commonly used swage forging machines include rotary, connecting rod, and roller types. 　 2. Stamping method: Use a tapered core on the punch to expand the tube end to the required size and shape. 3. Roller method: Place a core in the tube, and use a roller to push the outer circumference for round edge processing. 4. Rolling method: Generally, no mandrel is used, and it is suitable for the inner round edge of the thick-walled pipe. 5. Bending method: There are three methods commonly used, one method is called the stretching method, another method is called the stamping method, and the third method is the roller method. There are 3-4 rollers, two fixed rollers, one adjusting roller, adjustment With a fixed roll distance, the finished pipe will be bent. 6. Bulging method: one is to place rubber in the tube and compress it with a punch on the top to make the tube protrude into shape; the other method is hydraulic bulging, in which liquid is filled in the middle of the tube, and the liquid pressure bulges the tube into the required shape, most of the production of corrugated pipes use this method.

Material API standard J55,K55,N80,L80. Stainless steel 304, 304L, 306, 316. Low carbon steel. Hole Arrangement Parallel, Spiral

The installation method of stainless steel pipe is the same as that of ordinary carbon steel, and the subsequent process requirements are required in some processes. 1. The stainless steel material should not be in direct contact with other metal and should be padded with non-metallic materials such as wood or rubber. 2. It is not allowed to use ordinary grinding wheels for pipe cutting, and special stainless steel grinding wheels or plasma cutting should be used. 3. The inner side of the weld seam should be filled with argon for protection during positioning welding of stainless steel pipes and fittings. 4. Arc starting and arc closing, arc starting adopts the re-welding method, and the arc crater should be filled with the arc crater. Arc starting must be completed in the groove. Arcing and are starting on the surface of the base material of pipes and pipe fittings are prohibited. If defects such as pores and cracks are found at the arc starting and ending points, they should be cleaned up in time. 5. The connection of stainless steel pipes, pipe fittings and stainless steel pipes, pipe fittings, and non-stainless steel pipes and pipe fittings, the welded butt joints should be filled with argon protection before the bottom welding, and then argon tungsten arc welding can be carried out. 6. The arc starting and ending points of multi-layer welding should be staggered. 7. When the stainless steel material is continuously welded, the temperature between the layers should not exceed 60 ℃. 8. The welding seam at the welding joint of the pipeline should be pickled and passivated after welding. 9. The water pressure test of stainless steel pipes has definite requirements for water temperature and water quality. The water temperature shall not be less than 5℃; the chloride ion content of the water has to be greater than 25Pmm.

8. FFX molding (flexible molding). New technology improved based on FF molding technology by Japan's Nakata Machinery Manufacturing Research Institute. The deformation is focused on the edge of the rough forming section so that the edge bends to about 30% of the width of the steel strip, and at the same time, more than 80% of the total deformation of the steel strip is uniformly completed in the rough forming section, and each forming roll in the rough forming section The pass patterns adopt a set of continuously changing multi-curvature curves, which contain the pass patterns that can be produced for welded pipes so that only one set of forming rolls can produce products of different specifications, which reduces the number of forming stages and roll changing time. 9.TPF three-point bending forming. According to the law of transformation of longitudinally welded pipes, the partial forming method is adopted. The first step uses "W" to shape the edge of the strip; the second horizontal roll bends the middle of the strip to make the strip a "U" shape; the third horizontal roll is curved "U" The two straight sides of the ”shape make it close to the double-radius section and send the strip steel to the vertical roll formation for rounding deformation. 10.UO molding. The edge of the steel plate is pre-bent as required and then molded by a U-forming machine and O-forming machine twice. The circumferential compression deformation (0.2%~0.4%) occurs in the O forming so that the circumferential residual stress of the open pipe is evened. Then the O-shaped tube blank is welded and then cold expanded. It is characterized by large production capacity, with an annual production capacity of 300 to 1 million tons, which is suitable for single-scale mass production and a relatively large investment. 11.JCO molding. The progressive bending pressure forming first presses one half of the steel plate into a J shape and then presses the other half of the steel plate into a J shape. After multiple compressions, a C shape is formed, and finally, an open O-shaped tube is formed from the middle. Then expand the diameter of the O tube after cooling. The steel pipe has great flexibility in production, which is especially suitable for the production of medium-diameter thick-walled pipes with less investment. 12. RB forming (roll forming). The steel plate is rolled and bent many times between three rollers and four rollers, and finally bent into the required cylindrical shape. This process appeared earlier and is mostly used to produce pressure vessels, structural pipes, and water pipes with larger outer diameters (up to 4500mm) and shorter lengths (3~6m), with poor dimensional accuracy and lower productivity. 13. Spiral welded pipe is formed in front swing type. The steel belt in front of the former swings as a whole to adjust the forming angle. The unit does not have loops and occupies a small area, but it can only produce intermittently (roll-to-roll or stop at opposite ends). 14. Spiral welded pipe back swing forming. The steel pipe bridge swings after the former to adjust the forming angle. Usually, there are loopers to ensure continuous production, occupying more land, and more equipment.

The steel plate is first pressed into a U shape in the forming die, and then pressed into an O shape, and then the inner and outer submerged arc welding is carried out. After welding, the diameter is usually expanded at the end of the full length, which is called the UOE welded pipe, and the one that does not expand is called UO welded pipe. . Roll Bending the steel plate, and then carry out internal and external submerged arc welding. After welding, the diameter is expanded to RBE welded pipe or not to RB welded pipe. The steel plate is formed in the order of J type-C type-O type, and after welding, the diameter is expanded to JCOE welded pipe or non-expanded to JCO welded pipe. Among the above-mentioned LSAW welded pipes, UOE is commonly used. The expansion process of large-diameter steel pipes is the preliminary rounding stage. The fan-shaped block is opened until all the fan-shaped blocks touch the inner wall of the steel pipe. At this time, the radius of each point in the inner tube of the steel pipe within the step length is almost the same, and the steel pipe is initially round. The sector block starts to reduce the movement speed from the front position until it reaches the required position, which is the required inner circumferential position of the finished pipe. The expansion process stage of the large-diameter steel pipe is the rebound compensation stage. The fan-shaped block will further slow down at the position of stage 2 until it reaches the required position, which is the position of the inner circumference of the steel pipe before rebound as required by the process design. The sector block remains stationary for a while before rebounding on the inner circumference of the steel pipe. This is the pressure maintaining and stable stage required by the equipment and the diameter expansion process. After that is the unloading return stage of the large diameter steel pipe expansion process. The sector block rapidly retracts from the position of the inner circumference of the steel pipe before the rebound, until it reaches the initial expansion position, which is the small contraction diameter of the sector block required by the diameter expansion process.

1. The cost of infrastructure is low. Compared with railway transportation, the cost of infrastructure can be saved by three points, and the transportation volume is twice that of the railway. 2. Simple construction, fast construction speed, generally laid underground, reliable and adaptable to various terrain. 3. The transportation operation cost is low, and it can be highly automated. Compared with other transportation methods, longitudinally welded pipe transportation is cheap, and the freight is only about 10% of the railways and about half of the waterway. At present, the proportion of oil and gas transported by longitudinally welded pipes in the world is increasing, accounting for about 75%-95% of the total oil and gas. At present, the scope of transportation is gradually expanding, not only oil and gas, but also various chemical raw materials and Products, and has been studying the use of longitudinally welded pipes to transport solids. The development direction of longitudinally welded pipe pipeline transportation points to the direction of large diameter and high pressure.