Detailed introduction of spiral steel pipe:

Production process: Spiral seam steel tube with strip coil as raw material, often warm extruded, welded by automatic double-wire submerged arc welding process.

(1) The raw materials are strip coil, welding wire and flux. Before input, it must undergo strict physical and chemical tests.

(2) The head and tail of the steel strip are connected by single wire or double wire submerged arc welding. After being rolled into a steel pipe, automatic submerged arc welding is used for repair welding.

(3) Before forming, the strip steel is leveled, trimmed, planed, surface cleaned and conveyed, and pre-bent.

(4) The electric contact pressure gauge is used to control the pressure of the oil cylinder on both sides of the conveyor to ensure the smooth transportation of the steel strip.

(5) Using external control or internal control roll forming.