Ductile iron pipe fittings installation rubber ring must be bent into the ring-shaped or 8-shaped sh

Ductile iron pipe fittings installation rubber ring must be bent into the ring-shaped or 8-shaped shaped something something into the socket groove

Ductile iron pipe fittings installation rubber ring must be bent into the socket groove for the socket-shaped or socket-shaped ductile iron pipe fittings installation rubber ring must be bent into socket groove for socket-shaped or socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped ring or socket-shaped socket-shaped socket-shaped socket-shaped socket-shaped install rubber ring must be cleaned. Clean the adhesive on the rubber ring, bend the rubber ring into the shape of a cone or a cone into the socket slot, and press the rubber ring along the whole time, or with a rubber hammer, to ensure that the rubber ring is not twisted some, not twisted Evenly wedged into the slot. Brush the lubricant evenly on the inner and outer surfaces of the rubber ring of the socket device, and brush all the socket parts outside the socket line when brushing the lubricant on the outer surfaces of the socket. Should press the demand of the pipe down to the bottom of the trough, the general choice of manual or mechanical down pipe method. Equipment Equipment: The equipment equipment will be prepared for the equipment in place, the installation of care not to have been cleaned up the site of the pipe pollution. Both Ductile Iron and cast iron are rich in graphite monomer, which means that cast iron is a mixture of iron and graphite. Ductile iron pipes are mainly used in urban water supply and drainage and gas transmission networks. Compared with the traditional gray iron pipes (also known as gray iron pipes) , the strength and resistance of ductile iron pipes are higher And it overcomes the defect that the mechanical rigid interface can not bear the change of the external conditions. Compared with steel pipe, ductile iron pipe has good corrosion resistance, long service life and relatively simple construction. Because of the excellent quality of ductile iron pipes, some developed countries in the world have started to produce ductile iron pipes since the 1950s, and gradually spread the technology of centrifugal production, increasing the output value with agility By the 1970s, the replacement process of ductile iron pipe for grey iron pipe was basically completed, and the proportion of ductile iron pipe in total cast iron pipe was over 90% . There are also some restrictions on the component and shape of the castings produced by metal mold spheroidal graphite casting. For example, the Ferrous can only be castings of a simple shape; the component of the castings can not be too large; and the wall thickness can also be restricted Smaller castings can not be cast with wall thickness. Therefore, in the decision to choose metal mold casting, it is necessary to consider the following factors: The shape and weight of the casting is necessary and appropriate; there should be satisfied with the batch; the completion of the production deadline promised. Metal Mold spheroidal graphite casting, also called hard mold casting, is a casting method of pouring liquid metal into metal mold to obtain castings. The mold is made of metal and can be reused many times.