Steel pipe: φ 6 ~ 630x 1 ~ 50 mm, seamless stainless steel pipe for structure: GB/T 14975-2002.
Steel pipe: φ 6 ~ 630x 1 ~ 50 mm, stainless steel pipe for boiler and heat exchanger: GB 13296-9 1.
Steel welded pipe: φ 2 19 ~ 1200x3 ~ 20mm, stainless steel pipe for fluid transportation: GB 12770-2002.
First, the thicker the wall thickness of the product, the more economical and practical it is, and the thinner the wall thickness, the higher the processing cost.
Secondly, the technology of this product determines its limitations. Generally, the precision of seamless steel pipe is low: the wall thickness is uneven, the brightness of the inner and outer surfaces of the pipe is low, the cut-to-length cost is high, and the pits and black spots on the inner and outer surfaces are difficult to remove;
Third, its detection and shaping must be done off-line. Therefore, it shows its advantages in high pressure, high strength and mechanical structure materials.