Process the sides of the two plates into the required form at one time, steel plate edge milling machine: machine the two sides of the plate used for pipe making, and make the parallelism of the two plates within the specified tolerance range, to manufacture high-precision Steel pipes are prepared.

The continuous rolling process of straight seam steel pipe: the continuous rolling process of straight seam steel pipe, continuous rolling process is used in the continuous rolling and fixed diameter reduction process of steel pipe. Continuous steel pipe rolling is a process in which steel pipes and

The forging process generally consists of the following processes, that is, selecting high-quality billets for blanking, heating, forming, and cooling after forging. Forging methods include free forging, die forging, and membrane forging. During production, different forging methods are selected acc

1. For pipelines with high requirements for peak regulation, due to the uneven gas consumption of users and frequent fluctuations in pipeline pressure, the alternating stress on the steel pipe is very large, and the existing defects in the pipe will expand under the alternating stress. If you choose

Usually, we use epoxy coal tar pitch paint, if the requirements are high, you can use 3 oils and 2 cloths. 3 layers of paint and 2 layers of the glass fiber cloth, staggered construction. If required, the primer and topcoat of epoxy coal tar pitch are generally used directly, and each is applied twi

Straight seam steel pipes are welded by a welding method parallel to the longitudinal direction of the steel pipes and are widely used. With the same diameter and length, the welding length of the straight seam steel pipe is much less, while the welding length of the spiral steel pipe may increase b

Spiral steel pipes are mainly used as fluid pipes and piling pipes. If the steel pipes are used for running water after they are made, they will generally be treated with anti-corrosion treatment on the inner or outer surfaces. The general anti-corrosion methods include 3pe anti-corrosion, epoxy coa

The main process parameters of high-frequency straight seam welded pipe include welding heat input, welding pressure, welding speed, opening angle, position and size of the induction coil, position of impedance, etc. These parameters have a greater impact on improving the quality of high-frequency w

1. Different definitions:Long-radius steel elbow: Long-radius steel elbow means that the radius of curvature of the elbow is 1.5 times the diameter of the pipe; if it is greater than 1.5 times, it is in the category of elbows.Short radius steel elbow: The short radius steel elbow means that the radi

1. Welding process: In the welding process, the welding method of the spiral steel pipe and the straight seam welded pipe is the same, but the straight seam welded pipe will inevitably have many T-shaped welds, so the probability of welding defects is greatly increased. The welding residual stress i