advantages of galvanized seamless tube: 1. high pressure resistance: hot-dip galvanized seamless tube can withstand higher pressure.2. long average service life: paints with an average adhesion of 500g/m2 can be kept for more than 50 years without maintenance in dry and suburban environmen

forming and sizing of seamless carbon steel pipes, some hole design and adjustment methods will directly affect the quality, so we should pay attention to the following eight points when handling the forming of seamless steel pipes:1. before there is no perforation, the hole shape of each rack shoul

in the process of smelting or hot working, due to the influence of certain factors (such as non-metallic inclusions, gases, and improper process selection or operation, etc.) , and sometimes lead to material or product scrapping.   looseness, bubbles, shrinkage cavity residues, non-metalli

the fatigue strength of seamless pipe materials is extremely sensitive to various internal and external factors. external factors include the shape and size of the part, surface finish and use conditions, etc., and internal factors include the composition, tissue state, purity and residual stress of

the seamless tube generally loses its bearing capacity at a temperature of 450~650 °c, resulting in very large deformation, resulting in bending of steel beams and steel columns. as a result, it cannot be used again due to excessive deformation. the fire resistance rating of the steel pipe is about