The upper pigtail pipe is the intake branch pipe. In addition to distributing the feed, its main function is to absorb the expansion of the conversion pipe, the upper gas collector and the oil transfer line. Therefore, the material is required to be well shaped, and austenitic stainless steel 304/321 is mainly used. and other materials. The pipe diameters are mainly φ25, φ32 and other specifications.
The lower pigtail pipe is mainly used for the expansion of the lower gas collecting pipe of the mobile phone, and the material used is mainly Alloy 800H.
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