Operating pressure of Yunnan joint
However, the operating pressure of the Yunnan joint should not be lower than the allowable value. If it is too small, it will cause large leakage and cause too much damage to the mechanical parts, so as to avoid zero damage to the parts. Check the arrangement of the main body tube before feeding, and the sealing ring must not be folded to guard against large leakage; after unloading the cake, the main body tube is pressed and divided into rows. Operating pressure and operating temperature are within the defined range. Excessive operating pressure will cause leakage, the operating temperature of the expansion joint of the double-flange pipe is too high, and the plastic body pipe is easily deformed, and the concentration of the suspension should be uniform during feeding.
The specification requirements of the operating pressure rebar of the Yunnan joint shall be specified in the import and export trade contract. Generally, it should include the standard grade (type code), the nominal diameter of the steel bar, the nominal weight (quality), the specified length and the tolerance value of the above indicators. Chinese standards recommend rebar series with nominal diameters of 6, 8, 10, 12, 16, 20, 25, 32, 40, and 50mm. The supply length is divided into two types: fixed length and double length. The selection range of Chinese export rebar is 6~12m, and the selection range of Japanese rebar is 3.5~10m; if there is no requirement in the contract for domestic domestic rebar, the length is usually 9m and 12m.
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