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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.

GNEE steel is manufacturers & supplier of API 5L GR-B PSL 2 Pipes and Tubes, which covers Seamless and Welded, black and hot-dipped galvanized nominal (average) wall pipe for coiling, bending, flanging and other special purposes and is suitable for welding.

ASTM A135 ERW steel pipe, whether grade A or B, is usually manufactured using a high-frequency resistance welding process. Welds of ERW pipe conforming to ASTM A135 Class B shall be heat treated after welding to a minimum temperature of 1000°F [540°C].

A106 Grade B pipe is a type of mild steel pipe used in many industries. They are available in different sizes, with standard thicknesses ranging from 3mm-12mm.