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Advantages and Disadvantages of Various Anti-corrosion Materials
Petroleum asphalt, raw materials wide, low prices. However, poor working conditions, difficult to guarantee quality, serious environmental pollution. Coal tar epoxy, easy to operate, but a long time covering layer is cured by environmental impact, suitable for field work, the following 10 ℃ diffi...Read more -
Performance Advantages of Thermal Expansion Pipe
Thermal expansion pipe is a steel pipe processing special way is a hot expanding the use of hydraulic or mechanical means urging the steel pipe from the steel wall along the radially outward dilatation molding pressure processing technology. Mechanical means than hydraulic methods, devices, simpl...Read more -
Coiled Tubing Manufacturing Technology
Coiled tubing is a single length of several kilometers and repeated bending, achieve multiple plastic deformation of the new oil pipe. Coiled tubing equipment and its operation is called “universal working machine” in the foreign countries such as the United States, Canada and other c...Read more -
High-frequency Welded Pipe on the Quality of the Welding Operation in Process
Welding pressure Frequency welded pipe welding pressure is one of the main parameters of the welding process, after the two edges of the tube is heated to welding temperature and squeezing produce welded under pressure to form a common metal grain that is mutually crystals. Since the tube width a...Read more -
Structural Steel Heat Treatment Technology
Structural steel workpiece in the heating and cooling process, due to inconsistencies cooling rate of the surface layer and the core section and time form a temperature difference, it will lead to volume expansion and contraction of the uneven stress that the heat stress. In the thermal stress du...Read more -
The Main Method of Straight Welded Steel Pipe
Forged: forging hammer use reciprocating impact force or press pressure so we need to change the blank shape and size of a pressure processing method. Extrusion: steel metal is placed in closed extrusion Jane, put pressure on one end of the metal from the die orifice to obtain a predetermined ext...Read more -
The Main Production Process of High-pressure Pipe
The main production process of high-pressure pipe: billet heating, perforated tube, pipe extension. High-pressure pipe rolling, pipe sizing and reducing, finishing and cooling pipe or the manufacturing method can be said Billet heating perforation heat tie pickling cold drawn carbon burning cutti...Read more -
Large-caliber Straight Seam Steel Pipe Production Process
1. Before molding work Raw materials that strip, wire, flux. We must go through rigorous physical and chemical testing before it is put. Strip head and tail docking, single or double wire submerged arc welding, in rolled steel by automatic submerged arc welding. 2. The molding process Electric co...Read more -
Continuous Rolling Production Process
Continuous rolling tube (hereinafter referred to as MPM) process is a mandrel refers to wear long capillary column continuously through a series arrangement rack, rolling and rolling method conforms to become rolling mother pipe size requirements. Its distinguishing feature is the large capacity,...Read more -
Features of Hot-rolled Seamless Tube
After hot-rolled seamless steel tubes, the grain refinement of steel, the ingot destroy the cast structure, eliminate defects and microstructure of the resulting dense PIPE, improved mechanical properties. Air bubbles present before the steel pipe, cracks and loose, after hot rolling at high temp...Read more -
Features of Hot-rolled Seamless Tube
After hot-rolled seamless steel tubes, the grain refinement of steel, the ingot destroy the cast structure, eliminate defects and microstructure of the resulting dense PIPE, improved mechanical properties. Air bubbles present before the steel pipe, cracks and loose, after hot rolling at high temp...Read more -
The Main Features of Precision Bright Tubes
Main features of precision bright tubes : Pipe with wall precision, high-quality finish, non-heat-treated steel oxide layer, the inner wall of high cleanliness steel to withstand high pressure, cold deformation, flaring, flattening no cracks, can make a variety of complex deformation and mechanic...Read more