1. The production process is simple.
2. Less equipment, simple structure, lightweight, easy to realize continuous, automatic, and mechanized production.
3. The product cost is low.
4. It is suitable for a wide range of varieties and specifications, with a diameter of 6-3100mm and a wall thickness of 0.3-35mm.
Forming and welding are the basic processes of welded pipe production, and welded pipe production methods are classified according to the characteristics of these two processes. The welding method can be divided into furnace welding, electric welding, gas welding, and gas welding. Furnace welding is divided into lap welding and butt welding according to the form of the weld. The forming methods of butt welding are divided into two types: drawing and rolling. There are two types of equipment used for drawing: chain furnace welding machine and continuous furnace welding machine. Roll forming adopts a continuous roll machine.
Electric welding is further divided into three types: contact welding, induction welding, and arc welding, among which contact welding is further divided into resistance welding and flash welding, arc welding is further divided into open arc welding, submerged arc welding, and shielded arc welding, and submerged arc welding is further divided into There are two types of the straight seam and spiral seam, and gas welding is divided into acetylene welding and water gas welding. The water-gas welding equipment is divided into roll-type pipe welding machines and forging-type pipe welding machines. Gas welding is hydrogen atom welding.
