Is ductile iron pipe breakable?
The ductile iron pipe has many uses in our city construction, for our city water supply, gas supply and so on. But ductile iron pipes are also very useful in sewage disposal. As we all know, ductile iron pipe has many excellent properties, such as high strength, corrosion resistance, high pressure resistance, low accident rate, long service life and Gao Yanshen rate. It is an excellent water supply pipe.
1 、 the drainage pipe is easy to fold. Folding is formed on the surface of various drainage pipe line, the longitudinal defects often throughout the entire product;2, poor drainage pipe surface prone to scarring;3, inferior drainage pipe, no metallic luster, is pale red or similar to the color of pig iron;4, inferior drainage pipe easily scratch, because the inferior material manufacturers equipment is simple, easy to produce burr, scratches the drainage pipe surface. Deep scrape reduces the strength of the ball drain;
5, inferior wood surface is easy to produce cracks, because its billet is adobe, Adobe porous, Adobe in the process of cooling due to the role of thermal stress, cracks, after rolling, there are cracks;6, poor drainage tube appearance often pitted phenomenon. Pits is due to groove wear caused by defects in pipe surface irregular uneven. Because of the poor sewer pipe manufacturers to pursue profits, often rolling groove rolling most standard.Ductile iron pipes are broken because of the excessive heat treatment during casting or the lack of proper addition in casting to prevent a change in the proper brittleness and to cause cracking. It is recommended that you used to repair defects of cast iron machine, are currently on the market to sell, but also can ensure welding intact appearance, make your products by quality, but if it is in the use of performance can not meet the effect, especially the pipeline pressure quite big, what methods are of no use that must be re cast as the new.