This article will introduce the manufacturing process, principles and application of thermal expansion welded tubes in engineering.

OCTG casing running technology is a key link in oil and gas well construction. It is mainly used to isolate fluids in different formations to ensure the safety and production efficiency of the wellhead.

Black mild steel pipe is a tubular-shaped pipe of black mild steel.

Fire pipes are one of the important fire-fighting facilities in buildings. They undertake the important tasks of fire extinguishing and rescue.

Reinforced concrete sheet piles and steel sheet piles are two common forms of pile foundation structures, each with structure's own advantages and disadvantages in different applications.

High-frequency resistance welded casing (ERW octg casing for short) has the advantages of high dimensional accuracy, good weld toughness, high extrusion resistance, and low cost compared with seamless casing.