Manufacturers will introduce seamless tubes: hollow long steel without surface seams, for transporting oil, gas, water and solids.
Lighter than solid round steel at equal bending & torsional strength, they are cost-effective section steel widely used for drill pipes, drive shafts, frames and construction scaffolding.
ASTM seamless tubes save materials and labor for ring parts like bearing sleeves and jack casings. They are also vital for gun barrels and other weapon parts.
Seamless tubes fall into round and special-shaped types. Round tubes carry more fluid and bear even radial pressure, so they dominate the market. Yet square/rectangular tubes boast better bending resistance for agricultural machinery frames.
Selection Guide for ASTM Seamless Tubes
Premium tubes feature stable quality and good heat insulation.
Pick reputable manufacturers for reliable products and thoughtful services.