Pìob Iarainn ductile
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Tha pìoban stàilinn iarar air pìoban stàilinn ainmichte a 'dèanamh pìoban iarainn mean air iarlach, aig a bheil brìgh stàilinn, mar sin an t-ainm. Tha Grafach ann am pìoban iarainn ducte ann an cruth sporing, le bileag choitcheann de ìrean 6-7. In terms of quality, the spheroidization level of cast iron pipes is required to be controlled at 1-3 levels, with a spheroidization rate of ≥ 80%. Therefore, the mechanical properties of the material itself have been improved, possessing the essence of iron and the properties of steel. After annealing, the microstructure of ductile iron pipes is ferrite with a small amount of pearlite, which has good mechanical properties, hence it is also called cast iron steel pipes.
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