Seamless steel pipe (or we can name it as seamless steel tube) is a kind of hollow section which is made without any peripheral joints or weldings. It can be round, square, rectangular or any other cross-section type. Seamless steel pipe is made of steel ingot or solid capillary by hot-rolled or cold-rolled production technology. Since seamless steel pipe is much lighter and more economical compared with steel round bar, it is widely used in liquid transportation, large steel structures, oil drilling fields, power plant, automotive drive shafts, bicycle frame s, scaffoldings in construction, machinery, airports, shipbuilding etc.
Features:
1) Dimensions: 32-920mm, Thickness: 4-35mm Length: <=13m
2) Material: 10#, 20#, Q295, Q345, 45#, ST44/52, ASTMA53/106B, API 5LGR.B, 40Mn2、45Mn2、27SiMn、20Cr、40Cr、20CrMo、35CrMo、38CrMoA1、50CrV、30CrMnSi ASTM A500-98
3) Standards: GB/T8162-2008, GB/T 8163-2008, GB/T3084-2008, GB/T5310-2008, ASTM A106/A53, API 5L, API 5CT
4) Production technology: Hot-rolled, Cold drawn, or hot expanding
5) Testing: Eddy current/ Hydrostatic/Ultrasonic/ Intergranular Corrosion etc.
6) Packing: in bundles with steel strips or in bulk
7) Surface: oiled or anti-rust paintings as customer’s will
8) Ends: Plain or Bevel
8) Applications: Seamless steel pipes are widely used for water, oil and gas transfer, ship-building, chemical fertilizer equipment etc