2023-08-10 Heat strengthened, high impact toughness, may not be sensitive to lack. Excellent thermoplastic, high speed extrusion into a complex structure, thin-walled, hollow profiles of various, or forgings forged into complex structures. Quenching temperature range, low quench sensitivity, after extrusion an
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2023-08-09 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 countries, it ha
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2023-08-08 1. Before molding workRaw 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 processElectric contact
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2023-08-07 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, hi
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2023-08-04 Pipe forming the strip is unequal curvature composite longitudinal deformation process and continuous operation in cross section, and the strip is bent by the force of a multi-directional deformation process.The basic principle of straight seam steel pipe forming theory is by the action of an extern
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2023-08-03 Ceramic-lined composite steel pipe transportation and installation is very convenient, ceramic lined composite steel pipe and steel pipe, wear-resistant alloy cast pipe, cast iron pipe and cast stone pipe comparison, relatively light weight, easy to transport. Ceramic-lined composite steel pipe can
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2023-08-02 Submerged arc welding is an arc welding under flux layer combustion method. Welding arc between the wire and the weldment burning heat of the arc and arc welding wire ends near the base metal and solder melts, continue feeding the wire, and proceeds along a certain trajectory, an arc weld pool solid
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2023-08-01 With the rapid development of China's oil industry, the demand for high-grade steel is growing, and high-grade steel must be quenched, and therefore the study of the overall quenching of steel is very important. China Heavy Machinery Research Institute has developed a "dip quenching + internal spray
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