The seamless pipe is compared with the straight seam resistance pipe as follows:
1. High dimensional accuracy
The deviation of diameter and wall thickness is smaller than that of seamless steel tube. This is because steel rolling and tube forming are easy to control, so the dimensional accuracy is high.


2. Good mechanical properties
The development and technology of heat treatment and welding technology are easy to control rolling of straight seam resistance welded steel pipe. Welding properties can be controlled. The elongation of the straight seam resistance welded pipe is 8%-10% higher than that of the seamless pipe. The carbon ratio of the straight seam resistance welded pipe is less than 1/2 of that of the seamless pipe.


3. Ulcer Resistance Extrusion
Uniformity of wall thickness of high concentricity straight seam resistance welded pipe. Weld heat treatment, metal uniformity, so it has a high collapse resistance.