Industrial News
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Cold-drawn tube unit
Cold-rolled, cold-drawn or cold-rolled and cold drawn combination of cold working process for the production of pipe package of equipment combinations. It is the hot-rolled welded pipe or tube depth processing units. Based on the processing properties of the metal, pipe size, quality requirements...Read more -
Steel pipe pickling procedure
So called pickling is using hydrofluoric acid and nitric acid solution to wash steel surface oxide generated after heat-treated. Used in the solution composition and ratio values: HF (3-8%), HNO3 (10-15%), H2O (the remaining amount) when processing solution temperature at 40-60 °C. Steel pipe pic...Read more -
Drainage pipeline
Drainage pipeline refers to the collection and discharge of sewage, waste water and rainwater pipe drainage system and affiliated facilities. Including dry pipe, branch pipe and pipe leading to treatment plants, Regardless of the pipeline on the street or in any other place, as long as they play ...Read more -
The Type of Steel Pipe Used for Oil Transportation
The processing, transportation and storage of oil is highly complex with high pressure and corrosion. Crude oil from the underground contains substances such as sulfur and hydrogen sulfide that can oxidize the pipeline. This is a key problem during the oil transportation. Therefore, the material ...Read more -
What is the difference between ut and x-ray pipe examination
The use of ultrasonic testing methods is to detect instrument called the ultrasonic flaw detector. Its principle is: the ultrasonic wave propagation in the material is detected, the acoustic properties of the material and the internal organization changes have some impact on the propagation of ul...Read more -
Zinc coating
Zinc is a metallurgical reaction process. From the microscopic point of view, the process of hot dip galvanizing is two dynamic balance, heat balance and zinc iron exchange equilibrium. When the steel workpiece immersed in about 450 ℃ molten zinc liquid, room temperature liquid zinc absorption he...Read more