Pipe piles play a crucial role in the construction industry. Pipe piles are tubular products made of concrete, which is is widely used in the field of construction. This article will introduce types of the pipe pile.
Spiral pipe pile
Seamless pipe pile
The spiral pipe pile is a spiral joint pipe pile made by automatic double wire double submerged arc welding process.
Spiral pipe pile production process is simple, high production efficiency, low cost, rapid development. The strength of the spiral pipe pile is generally higher than that of the straight welded pipe, and the welded pipe with a larger diameter can be produced with a narrower blank, and the welded pipe with a different diameter can be produced with a blank of the same width. However, compared with the straight pipe of the same length, the weld length is increased by 30-100%, and the production speed is lower.
Spiral pipe pile is widely used in chemical industry, electric power industry, agricultural irrigation, water engineering, petrochemical industry and urban construction. It is one of the 20 key products developed in China. Spiral pipe pile for liquid transportation: water supply, drainage. pipe pile: gas, steam, liquefaction. For structural use: as pile driving pipe, as a bridge;Wharf, road, building structure with a wide range of uses such as pipe.
(1) Spiral pipe pile raw material namely strip steel coil, welding wire, flux. Before the investment must pass the strict physical and chemical examination.
(2) The spiral pipe pile strip steel head and tail butt joints are connected by single wire or double wire submerged arc welding, and automatic submerged arc welding is adopted after rolling into pipe pile.
(3) Before forming the spiral pipe pile, the strip steel shall be leveled, trimmed and planed, and its surface shall be cleaned and conveyed and treated to the bending edge.
(4) The spiral pipe pile adopts the electric contact pressure gauge to control the pressure of the oil cylinder on both sides of the conveyor, ensuring the smooth conveying of the strip steel.
(5) Spiral pipe pile adopts external control or internal control roller forming.
(6) The spiral pipe pile adopts the weld gap control device to ensure that the weld gap meets the welding requirements. The pipe diameter, the amount of wrong side and the weld gap are strictly controlled.
(7) The spiral pipe pile internal and external welding are performed by the Lincoln welder for single wire or double wire submerged arc welding to obtain a stable welding specification.
(8) The welded welds of the spiral pipe pile were all checked by the online continuous ultrasonic automatic damage instrument, which ensured the non-destructive testing coverage of 100% spiral welds. If there is any defect, it will automatically alarm and spray the mark, and the production workers can adjust the process parameters at any time to eliminate the defect in time.
(9) The spiral pipe pile was cut into single root by air plasma cutting machine.
(10) After the spiral pipe pile is cut into a single root pipe pile, each batch of pipe pile shall carry out a strict first inspection system to check the mechanical properties, chemical composition and melting condition of the weld seams, and the surface quality of pipe pile as well as the non-destructive inspection to ensure that the pipe production process is qualified before it can be officially put into production.
(11) The parts marked by continuous acoustic wave detection on the welding seam of spiral pipe pile shall be reviewed by manual ultrasonic and X-ray. If there are any defects, they shall be repaired and subjected to non-destructive inspection again until the defects are confirmed to have been eliminated.
(12) The pipe in which the butt welds of spiral pipe pile and the t-shaped joints intersecting with the spiral welds are all inspected by X-ray television or film.
(13) Each pipe pile was subjected to hydrostatic test and the pressure was radial sealed. The test pressure and time are strictly controlled by the pipe pile hydraulic microcomputer testing device. Automatic printing record of test parameters.
(14) The spiral pipe pile end is machined to accurately control the verticality of the end face, the slope Angle and the blunt edge.
Modern Seamless pipe pile has many production uses. Seamless pipe pile(Seamless Steel Tube) is a kind of long Steel with hollow section and no joints around it. Pipe pile has a hollow section and is widely used as a pipe to transport fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, pipe pile is a kind of economic section steel with the same bending and torsional strength and light weight. It is widely used in the manufacturing of structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction. Pipe pile is widely used to manufacture annular parts, which can improve the material utilization rate, simplify the manufacturing process, and save materials and processing hours. For example, rolling bearing ring, jack sleeve and so on. Pipe pile is also an indispensable material for all kinds of conventional weapons. Pipe pile is used for pipe and barrel manufacturing. Pipe pile can be divided into round pipe and shaped pipe according to the shape of cross-sectional area. Since the circle has the largest area with equal circumferences, more fluid can be transported with a circular tube. In addition, when the ring section is under internal or external radial pressure, the force is more uniform, so the vast majority of pipe pile is a round pipe.
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