Posts by wilson

Nowadays, high-frequency straight seam welded pipes (ERW pipe) are mainly used in water supply engineering, power industry and petrochemical industry, etc. There are many types of water pipes used in ...

Tubing naturally has a smaller diameter than casing pipe, except for the 4 1/2-inch diameter. An outer diameter of 114.3 mm (4 1/2 inches) is considered a threshold and can be either casing or tubing....

The surface of the stainless steel pipe will change differently in different environments. Knowing the influence of the use environment on the stainless steel pipe can choose the right model, otherwis...

What are the detection methods of oil casing pipe ? Let's take a brief look: 1. Ultrasonic testing  When ultrasonic waves are spread in the tested raw materials, the acoustic characteristics of t...

45 refers to the carbon content in this material, which is about 450. This material is also more common than other superior carbon steels. Steel 45: average carbon content is 0.42-0.50%, average sili...

Points for workers' technical operations: 1. Parameter setting: Set the test pressure value and voltage stabilization time according to the specifications of the petroleum pipe to be tested, the steel...

1. Outer diameter tolerance ERW steel pipe: It is cold-formed and sizing is completed by reducing the diameter by 0.6%. The process temperature is basically constant at room temperature. Therefore, th...

Longitudinally Submerged Arc Welding (LSAW) is a professional expression term for LSAW steel pipe. It uses a single medium and thick plate as the raw material, and the steel plate is pressed (rolled) ...

According to the manufacturing method, the steel pipe can be pided into two categories: seamless steel pipe and welded seam steel pipe. Among them, ERW steel pipe is the main variety of welded steel p...

The method of preventing and reducing welding deformation needs to consider the welding process design to overcome the changes in the heat and cold cycle during the welding process. The shrinkage cann...