The main difference between cast iron pipes and steel pipes is that they have different uses, different characteristics, and different classifications.
Read moreSubmerged arc welding is one of the mechanized welding methods with high production efficiency today. Its full name is submerged arc automatic welding, also known as automatic arc welding under flux layer. It is a welding method in which an arc burns under a flux layer.
Read moreWelding crack is the most common serious defect in steel pipe welding (such as seamless steel pipe, welded steel pipe). Under the joint action of welding stress and other brittle factors, the bonding force of metal atoms in the local area of the welded joint is destroyed and the gap formed by the new interface is formed.
Read moreThe detection methods of surface defect detection of a500 rectangular tube include eddy current testing, ray testing, liquid penetrant testing, ultrasonic testing, magnetic particle testing
Read more1. Seamless steel pipe billet heating. The heating should be uniform, and the rapid temperature rise and fall is prohibited. Each temperature rise and fall should be kept steady and slow, and the maximum temperature rise and fall should not exceed 30°C.
Read moreThe pipes made by casting molten iron above No. 18 and adding a nodularizing agent through high-speed centrifugal casting of a centrifugal ductile iron machine are called "ductile iron pipes", referred to as ball pipes, ductile iron pipes, and ductile iron pipes for short. Compared with carbon steel seamless pipes, ductile iron pipes are more suitable for the transportation of tap water, and are ideal materials for tap water pipes.
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