1. The fixed-length spiral steel pipe may not be bundled.2. If there are threaded buckles at both ends of the spiral steel pipe, it should be protected by a thread protector. Apply lubricating oil or anti-rust agent to the threaded fasteners. Both ends of the spiral steel pipe are breached, and nozzle protectors can be added at both ends according to requirements.

Straightening is an important process in the production of seamless and welded steel pipes. Especially API standard oil casing and oil and gas pipes, steel casing pipes and special pipes for mechanical equipment, which have high quality requirements.These kinds of steel pipes not only have strict requirements on steel grade and weld quality, but also have high requirements on straightness of steel pipes.

The welding seam leveling machine processes the weld seam of the stainless steel welded pipe on-line, and repeatedly rolls the inner and outer weld seams of the welded pipe synchronously, so that the weld seam transitions smoothly with the base material, making the seam welded pipe seamless and highlights the advantages of the welded pipe.

LSAW pipe is a welded steel pipe made from a single medium-thick plate, pressed (rolled) into a tube billet in a mold or forming machine, and double-sided submerged arc welding and expansion.

Long strips of steel such as seamless pipes and welded steel pipes are often bent or twisted due to external forces, temperature changes, and internal forces during rolling, forging, extrusion, drawing, transportation, cooling, and various processing processes. In order to obtain straight finished strips, these defects are eliminated through the straightening process. The reasons for the bending or twisting of the above strips are as follows:

If the welded pipe is stored for a long time, problems such as rust and anti-corrosion layer aging will occur, which will affect the normal use of the welded pipe. The welded pipes stored for a long time should be inspected regularly, and the exposed welded pipes should always be kept clean and stained, and stored neatly in a ventilated and dry place indoors. It is strictly forbidden to pile up in the open air or in a humid place. Always keep the welded pipe dry and ventilated, keep it clean, and store it in the correct storage method.