Spiral pipe, commonly known as spiral steel pipe (SSAW), is a type of tubular steel manufactured by spiral welding of low-carbon steel or low-alloy steel. Spiral pipe has a broad variety of applications in infrastructure development, industrial production, and other industries due to its high streng

Welded steel pipe is steel strip or plate that has been bent into round, square, or other forms and then welded onto the surface of the steel pipe seam.Welded steel blanks are utilized in steel sheet or strip, and are classified into furnace pipe, ERW pipes, and automated arc welded pipe based on th

It is a kind of spiral steel pipe, which is made of steel rolling plate as raw material, often extruded and welded by active double wire submerged arc welding process.(1) Raw materials are strip coil, welding wire and flux. We should pass strict physical and chemical examination before investment.(2