Because the graphite in malleable cast iron is in the form of flocs and has a small splitting effect on the matrix, its mechanical properties are higher than gray cast iron, and its plasticity and toughness are better. However, malleable cast iron cannot be forged. The matrix structure of malleable cast iron is different, and its performance is also The difference is that black-hearted malleable cast iron has higher plasticity and toughness, while pearlitic malleable cast iron has higher strength, hardness and wear resistance.
Description:
Since malleable steel pipes are made of iron, they are prone to rust when exposed to the air. In particular, our malleable steel pipe fittings are mainly used for fire fighting and water supply projects. The pipe fittings are more prone to rust when exposed to a humid environment for a long time.
Therefore, malleable steel pipe fittings need to be rust-proofed on the surface. The surface anti-rust treatment of Jilin malleable steel pipe fittings is generally divided into two types: hot-dip galvanizing and cold-dip galvanizing. Hot-dip galvanizing refers to a galvanizing treatment method in which pipe fittings are immersed in a zinc solution melted at a high temperature of 700-800 degrees, thereby covering the surface of the pipe fittings with a layer of zinc. Cold galvanizing is also called electro-galvanizing. The principle is to transfer the zinc hanging on the anode to the surface of the pipe hanging on the cathode by electrophoresis, and then form a thin and uniform zinc layer.
Brife introduction of our company:
Leyon Piping System Co., Ltd. has been specializing in the production of pipe fittings and other related products for more than 25 years, including malleable cast iron pipe fittings, grooved ductile iron pipe fittings, stainless steel pipe fittings, valves, etc.
All our malleable cast iron fittings and grooved fittings have passed UL / FM certification!
Leyon has three factories in China. Last year we built an automatic production line. Now our annual output is 50000 tons. Our products can be used in water supply, irrigation, oil and gas transportation, fire fighting and even home decoration.
Now we have established long-term cooperative relations with customers in more than 90 countries. We appreciate the opportunity to show you what makes leyon pipe the number one pipe fitting brand. We always redouble our efforts for our excellent customers!
