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The processing of brazed spiral finned tube is carried out in two steps. First, the steel strip plane perpendicular to the axis of the tube is wound on the outer surface of the tube in a spiral line manner, and the ends of the steel strip are welded to the steel pipe and fixed, and then the steel strip and steel pipe are welded together by brazing in order to eliminate the gap between the steel strip and the steel pipe contact.

The ASTM A333 Cryogenic pipe is a seamless pipe suitable for low temperature environments.

We provide all types of Alloy Steel Welded Pipes that includes Grades: 1-1/4 CR, 2-1 1/4 CR, 5 CR, 9 CR 91.

JIS G3444 is the Japanese Industrial Standard for carbon steel pipes for general structural use.