A piece of steel with a hollow cross section and no seams around it. The steel Pipe Fittings has a hollow section, a large number of Pipe Fittingss used to transport fluid, such as the transmission of oil, natural gas, gas, water and some solid materials such as Pipe Fittingsline. Steel and round steel and other solid steel compared to the same bending strength, the weight is light, is an economic section of steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill Pipe Fittings, car drive shaft, bicycle Racks and steel scaffolds for construction purposes. The use of steel Pipe Fittings manufacturing ring parts, can improve the utilization of materials, simplify the manufacturing process, saving materials and processing time, such as rolling bearing rings, jack sets, etc., has been widely used to manufacture steel. Steel Pipe Fittings or a variety of conventional weapons indispensable materials, barrels, barrels and so on to steel to manufacture. Steel Pipe Fittings by cross-sectional area of the shape can be divided into tube and shaped tube. As the circumference of the same conditions, the largest circular area, with a circular tube can transport more fluid. In addition, the ring cross section in the internal or external radial pressure, the force is more uniform, so the vast majority of steel Pipe Fittings is a tube. However, the tube also has some limitations, such as in the plane under the conditions of bending, the tube is not as good as the square tube bending strength, some agricultural machinery skeleton, steel and wood furniture on the commonly used side, rectangular tube. According to different purposes also need to have other cross-shaped shaped steel Pipe Fittings.
Many types of Pipe Fittings, summarized the following main types:
1, variable diameter Pipe Fittings fittings, Pipe Fittings end or Pipe Fittings on a part of the diameter to reduce;
2, variable wall thick Pipe Fittings, refers to the length of the Pipe Fittings along the wall thickness changes;
3, change the section of the Pipe Fittings, according to the requirements, the circular section into a square, oval, polygon and so on;
4, bending Pipe Fittings, we contact more, that is, straight tube into a different radius of curvature of the elbow, such as elbow, elbow, and so on;
5, with the flange and the edge of the Pipe Fittings, the former refers to the tube end to the inside or outside convex, the latter refers to the tube in the circumferential direction of the formation of bulging or groove of the Pipe Fittings;
6, with curling and back cover of the Pipe Fittings, to increase the total strength of the tube to the outside or inside the tube curling or Pipe Fittings fittings to seal the end of the tube;
7, diameter Pipe Fittings fittings, according to the requirements of the end of the Pipe Fittings or a part of the expansion to form a variety of shapes of Pipe Fittings;
Straight seam welded Pipe Fittings production process is simple, high production efficiency, low cost, rapid development. The strength of the spiral welded Pipe Fittings is generally higher than that of the straight seam welded Pipe Fittings, and the Pipe Fittings with larger diameter can be produced with the narrow billet. The Pipe Fittings with different diameter can also be produced with the same width. However, compared with the same length of the straight Pipe Fittings, the weld length increased by 30 to 100%, and the production rate is low. Therefore, the smaller diameter of the Pipe Fittings are mostly used straight seam welding, large diameter welded Pipe Fittings are mostly used spiral welding.
(SY5038-83) is a hot-rolled steel coil for the tube, often temperature spiral molding, the use of high-frequency lap welding method, for the pressure of fluid transmission of the spiral Seam high frequency welded steel Pipe Fittings. Steel Pipe Fittings pressure capacity, plasticity, easy welding and processing molding; after a variety of rigorous and scientific testing and testing, the use of safe and reliable, large diameter Pipe Fittings, high transport efficiency, and save the Pipe Fittingsline Pipe Fittingsline investment. Mainly used for the laying of oil, natural gas and other Pipe Fittingslines.
7. General low-pressure fluid transmission with spiral submerged arc welded steel Pipe Fittings (SY5037-83) is a hot-rolled steel coil for the tube, the regular temperature spiral molding, the use of double-sided automatic submerged arc welding or single-sided welding method for Water, gas, air and steam and other general low-pressure fluid transmission with submerged arc welded steel Pipe Fittings.