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There are several types of pipe tempering
by admin on 23-05-22
According to GB/T9711.1 pipeline steel pipe performance requirements, according to the different tempering temperature, can be divided into the following kinds of tempering: [1] Low temperature tempering (150-250 degrees) The microstructure obtained by low temperature te...
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How much is the detection standard of coated plastic fire pipe
by admin on 23-05-22
A sample about 100 mm in length was cut from any position of the plastic-coated fire pipe, and the impact test was carried out according to the provisions in Table 2 at the temperature of (20±5) ℃ to observe the damage of the inner coating. During the test, the weld shal...
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The main performance of seamless square tube
by admin on 23-05-22
1. The plastic Plasticity refers to the ability of a metal material to produce plastic deformation (permanent deformation) without damage under load. 2. The hardness Hardness is a gauge of how hard or soft a metal material is. In this life in the production of hardness m...
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High pressure boiler tube production manufacturing method
by admin on 23-05-22
Manufacturing method 1. The general boiler tube temperature is below 450℃, domestic pipe is mainly made of No. 10, no. 20 carbon bonded steel hot rolled pipe or cold drawn pipe. 2. High-pressure boiler tubes are often used under high...
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