Lvy Lee

Seamless steel pipes have a hollow section and are used in large quantities as pipelines for conveying fluids, such as pipelines for conveying oil, natural gas, gas, water and certain solid materials...

There are many ways to connect steel pipes, and several commonly used methods are now listed:Different connection methods have different application fields due to their different production...

Analysis of quality defects on the inner and outer surface of high-precision cold-rolled(cold drawn) seamless steel pipe:Cold rolled seamless steel pipes have the characteristics of no oxide layer on...

Straight seam welded steel pipes are divided into high frequency resistance welding and submerged arc welding according to the welding process. Straight seam submerged arc welding is referred to as...

The forming process methods of large-diameter LSAW steel pipes include: UOE forming method, JCOE forming method, CFE row roll forming method, RBE roll forming method and C forming method, etc., which...

Longitudinal submerged arc welded pipe (LSAW) is produced by using a single medium and thick plate as the raw material, pressing (rolling) the steel plate in a mold or forming machine into a tube...

Hot-rolled seamless steel pipe: Hot rolling is relative to cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization...

The sizing of high-frequency straight seam welded pipes (ERW welded pipe) refers to the rolling of welded pipes after welding by rollers of a specific pass, and the round or special-shaped pipes of...

Petroleum casing pipe is widely used in oil field work tasks, so the damage of the oil casing will seriously affect the work of the oil field and greatly reduce the work efficiency. The following oil...

The corrosion of oil casing is related to the partial pressure of corrosive gas, ambient temperature, water content, salinity, flow rate, pH value and other factors. The corrosion characteristics of...

Crush failure of oil casing pipe is a common form of casing damage. The anti-collapse performance of casing has always been the focus of attention, and the prediction and application of OCTG for...

High-frequency welding is a type of welding method that uses resistance heat generated by high-frequency currents flowing through the continuous contact surface of the workpiece to achieve mutual...

3PE anticorrosive steel pipe base materials include seamless steel pipes, spiral steel pipes and straight seam steel pipes. The three-layer polyethylene (3PE) anticorrosive coating has been widely...

The high-frequency welded pipe (ERW steel pipe) forming roll is an important part of the welded pipe unit and the technical core of the welded pipe forming process. The forming of high-frequency...

Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. The production process of straight seam steel pipe is simple, with high production...