This article mainly introduces the two major differences between manual arc welding and submerged arc automatic welding, as well as welding electricity protection measures.

This article will introduce in detail the function, material and selection method of oil steel casing.

Six factors should be considered when choosing steel casing suppliers.

Heat treatment refers to a metal thermal processing process in which the material is in a solid state and obtained by heating, holding and cooling to obtain the expected structure and properties.

In order to protect black carbon steel pipe from corrosion, appropriate anti-corrosion measures need to be taken.

Steel casing couplings are a device commonly used in pipeline connections.