Seamless steel pipe occupies an important position in the social and economic development, and perhaps my friends are not very familiar with it, but it has been widely used in petroleum and chemical management and other aspects, which has created a very important place for people’s daily life,it's very convenient.

Seamless steel pipe thread connection process1. The production process of seamless steel pipes can be divided into two types: cold-drawn and hot-rolled. The production process of cold-rolled seamless steel pipes is generally more complicated than that of hot-rolled. The tube billet must first underg