Steam pipes are generally covered with "304 flexible graphite mat". "Non-asbestos fiber rubber mat" can also be used, but it is not recommended.

Graphite metal spiral wound gaskets should be selected with an inner steel ring to prevent damage to the inner ring of the gasket caused by metal corrosion and fluid erosion. In the pipeline, the valve may be stuck and cannot cut off the fluid.

It is best to use flexible graphite coated pads, but asbestos pads are the most economical and popular, but when purchasing, it is best to buy ones with good quality and high density. Otherwise, the strength will be low after being immersed in water, and the gasket will be damaged in a short period of time, causing leakage.

Extended information:

Sleeve compensators should not be used on steam pipelines. This compensator requires constant replacement of fillers and requires too much maintenance, so axial corrugated compensators should not be used.

The axial corrugated compensator is installed on the steam pipeline. Although it has a beautiful appearance and requires little maintenance, the thrust generated by the internal pressure is too large, causing the cost of civil engineering to increase. However, the construction cost is limited when the pipe diameter is relatively thick. This type of compensator is only used when space is limited. In most cases, square compensators should be used. This type of compensator has the advantages of large compensation amount, small thrust and no maintenance.

Pipeline anti-corrosion must be thoroughly rusted to expose the metallic luster of the pipe before painting. The painted surface should be dry. It is forbidden to paint and remove rust at the same time. The paint must conform to the environment of the pipeline to prevent the new paint from falling off due to the temperature of the pipeline surface.