Longitudinal seam steel pipe welded steel pipe is heated and physically deformed. If a straight seam welded steel is welded, the data size can be reduced to a large extent. The demand for the straight seam steel pipe project is high, and the external seam welding starts to ensure the penetration of

1. Regardless of whether the straight seam steel pipe is rotated or fixed The cutting nozzle should be kept perpendicular to the surface of the straight seam steel pipe. After the cutting is completed, the cutting nozzle is gradually tilted forward at an angle of 70°-80° with the tangent line of the

1. Inferior quality seamless steel pipes are prone to scars.Mainly due to two reasons:(1) Inferior seamless steel pipes have many impurities and uneven materials.(2) Inferior pipe manufacturers have a simple guide and guard equipment, which is especially easy to stick to steel, and the pipe containi

Flattening and reducing deformation: The billet tube head contacts the tapered roller in the cantilever state and moves forward under the action of friction. At this time, the blank tube is only in contact with the roll and not on the plug. The deformation is mainly flattened and reduced in diameter