"ERW steel pipe" is a straight seam resistance welding pipe in English, abbreviated as ERW. It is used to transport oil, natural gas and other vapor-liquid objects. It can meet various requirements of high and low pressure, and plays an important role in the field of transmission pipes in the world.

LSAW steel pipe (abbreviated as LSAW) is a professional expression of longitudinal submerged arc welding steel pipe. It is a pipe produced by using a single medium thick plate as raw material, pressing (rolling) the steel plate into a pipe blank in a die or forming machine, and expanding the diameter by means of double-sided submerged arc welding.

Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often formed by warm extrusion and welded by automatic double wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel to the welded pipe unit. After rolling by multiple rollers, the strip steel is gradually rolled up to form a circular pipe blank with opening gap. Adjust the reduction of the extrusion roller to control the weld gap at 1 ~ 3mm and make both ends of the welded junction flush.

Yuantaiderun is a famous seamless steel pipe wholesale and customization factory in China