Cast iron pipe is simply a pipe made of cast iron in ancient times. Of course, many people are not very clear about cast iron pipe fittings because they have little experience in purchasing. Different types of cast iron pipe fittings have different uses, so before we start, we still need to know something about it, which is convenient for us to choose and can help us choose the right materials. Then Xiaobian will introduce the name and model of cast iron pipe fittings? Selection skills of cast iron pipes?

name and model of cast iron pipe fittings

pipes cast with cast iron. Cast iron pipes are used for water supply, drainage and gas transmission pipelines, including cast iron straight pipes and pipe fittings. Low labor intensity. According to different casting methods, it can be divided into continuous cast iron pipes and centrifugal cast iron pipes, among which centrifugal cast iron pipes are divided into sand mold and metal mold. According to different materials, it is divided into gray cast iron pipe and ductile iron pipe. The flexible joint is sealed with rubber ring, and the nominal diameter of the continuous gray cast iron pipe is 75 ~ 12mm, and the joint is in the form of socket or flange. According to the function, it can be divided into flexible interface and rigid interface.

The length of straight pipe is 4m, 5m and 6m; According to the different wall thickness, it is divided into three levels: LA, a and b. The nominal diameter of sand centrifugal gray cast iron pipe is 2 ~ 1 mm, and the effective length is 5 meters and 6 meters; According to the different wall thickness, it is divided into p and g levels. Great strength, good toughness, thin wall, less metal consumption and high pressure resistance. Compared with gray cast iron pipe, ductile iron pipe has great strength, good toughness, thin wall, less metal consumption and high pressure resistance, and its effective length is 5m and 6m. According to the different wall thickness, it is divided into p and g levels. It is the development direction of cast iron pipe.

Selection skills of cast iron pipes

1. The selection of ductile iron pipes should be based on the specific conditions of the laying place, and the interface form of straight pipes and fittings should be selected.

2. The rubber ring is preferably made of NBR, SBR, EPDM and other materials.

3. Selection of coating: Select an appropriate coating according to the internal and external conditions during use. The existing internal coatings are new products of ductile iron pipes, such as epoxy resin, polyurethane internal and external coatings, PE film coatings, etc., and their properties should be known in detail when selecting them.