In fact, the galvanized pipe in Ji'nan is to galvanize the steel pipe to improve the corrosion resistance of the steel pipe. Galvanized pipes are divided into galvanized and hot-dip galvanized pipes. First of all, according to the site progress in the appropriate time to enter the installation. Fix the bracket well in advance, draw a sketch according to the actual size, make the prefabricated pipe, reduce the pipe fittings on the pipe as far as possible, and weld the die. When pipes are pre adjusted, they should be closed when the installation is interrupted. The casing is designed and installed. During the installation process, bushing is set up. According to the requirements of design and equipment, the interface is reserved, and the upper part is blocked up, so as to prepare for the pressure test of the next step.
The thread connection of the pipe
The processing of the thread of Ji'nan galvanized pipe pipe is set by the wire machine. The connection should be strong, the root is not exposed to oil and anesthesia, the root exserted thread should not be more than 2 - 3 buckles, and the thread exposure is good for anticorrosion.
Two, the flange connection of the pipe
The connection between the pipe and the valve is required to be connected with the flange. The flange can be divided into flange, flange, flange selection finished. The flange and pipe center line are vertical, and the pipe mouth is not allowed to protruding the flange seal face. The bolts for fastening flanges should be lubricated before use. They should be crossed symmetrically. They should be tightened 2 to 3 times. The length of the screw can not exceed 1/2 of the screw diameter. The nut should be on the same side, and the flange gasket must not be pushed into the pipe. There should be no more than two gaskets in the middle of the flange.
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