News
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Causes of steel pipe recrystallization texture
In the hot deformation, the grains, impurities and defects in the second phase and a variety of metal inside the maximum extension along the main deformation direction is elongated, attenuated, and the intensity of the formation of the fiber direction is higher than the strength of the material i...Read more -
Carbon steel pipe products and classfication
Carbon steel pipe production methods (1) seamless steel pipe- hot-rolled tubes, cold drawn tubes, extruded tube, top tube, cold rolled tube (2) welded steel pipe (A) according to the process- arc welded pipes, electric resistance welded pipe (high-frequency, low frequency), gas pipe, furnace weld...Read more -
Bright Prospect of LSAW Steel Pipe
LSAW steel pipe is the professional term of Longitudinally Submerged Arc Welding. It has the following features. First of all, the product specification covers a large range. It can not only manufacture pipes with small diameter and big wall thickness but also products with large diameter and big...Read more -
Antirust varnish for oil pipeline
The surge in oil demand is driven by the rapid development of oil exploration, acquisition, refining, and petroleum equipment manufacturing. The production scale of China’s oil pipeline has reached an annual output of 4 million tons. In order to prevent the corrosion of the steel pipe, oil ...Read more -
A New Method to Measure The Wall Thickness of Welded Steel Pipe
This device consists of a measuring head of laser ultrasonic measuring equipment, a motivating laser, an irradiating laser and a convergence optical element that is used to collect lights reflected from the surface of the pipe to the measuring head. The important mass parameter for pipe productio...Read more -
Difference between erw and saw steel pipe
ERW is a electric-resistance welded steel pipe, Resistance welded steel pipe is divided into exchange of welded steel pipe and DC welded steel pipe in two forms. AC welding in accordance with different frequencies are divided into low-frequency welding, IF welding, welding of ultra-IF and high-fr...Read more