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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2023-07-31 ① Tensile test: measure stress and deformation, determine the strength (YS, TS) and plasticity index (A, Z) of the materialLongitudinal and transverse specimen pipe section, arc, circular specimen (￠10,￠12.5)Small-diameter thin-walled steel pipes, large-diameter thick-walled steel pipes, and fixed g
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2023-07-27 Processing methods of pipe fittings there are many. Many also belong to the scope of machining and the like, the most widely used method of stamping, forging method, roller processing method, rolling method, bulging France, stretching, bending method, and a combination of processing method. Tube pro
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2023-07-26 Frequency welded pipe production process, affecting the quality of the elements have more than one pipe, the main raw materials, welding technology and roll count which is beginning to adjust.Key to look at raw geometric dimensions. Strip geometry affect the quality of the steel strip width when les
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