How to distinguish inferior ductile iron pipe?
1. Carbon Steel Pipe Fittings Manufacturer shares that the appearance of inferior ductile iron pipes is often pockmarked. The pitted surface is irregular uneven defect of ductile iron pipe surface caused by serious wear of rolling groove. Because inferior ductile iron pipe manufacturer wants to pursue profit, often appear to roll groove to roll most exceed bid.
2. Ductile iron pipe is easy to fold. Folding is a variety of broken lines formed on the surface of ductile iron pipes.
3. The surface of inferior ductile iron pipe is prone to scarring.
4. The surface of inferior material is prone to crack, the reason is that its blank is adobe, adobe more pores, adobe in the cooling process due to the role of thermal stress, produce cracks, after rolling cracks.
5. Inferior ductile iron pipe is easily scratched, the reason is inferior material manufacturer equipment is simple and simple, easy to produce burr, scratch the surface of ductile iron pipe. Deep scratches reduce the strength of ductile iron pipes.
6. Low-quality ductile iron pipes have no metallic luster and have a reddish or similar color to pig iron. If you do not know how to purchase in the procurement, use these six points, will not buy inferior ductile tube.
That's all for the sharing,and we supply Carbon Steel Pipe Fittings for sale, if you have any demand for our products,just feel free to contact us.
