The main components of the ball-ink tube are carbon, silicon, manganese, sulphur, phosphorus and magnesium, etc., below for you to briefly introduce the maintenance common sense of ductile iron pipe
The material of the ball-ink tube is cast iron. Because the mechanical properties of ordinary cast iron are not high, the mechanical properties are greatly improved by taking measures to convert flake graphite in cast iron into spherical graphite. To distinguish ordinary cast iron, appellation ductile iron. Ductile iron is the material of spheroidal graphite steel, the price is cheap, but the strength of the bottom can only be used in low pressure occasions.
Before ditching, first remove obstacles, excavation trench, should consider when filling, the earth sand can fully backfill to the bottom part of the ball ink tube.
Mining interface at the groove, in order to interface operation is easy, should try to leave room, must ensure that the interface operation can fully use the strength.