The material of 20 # seamless steel pipe is 203 steel, the material of 20 # steel pipe is: 20 # seamless steel pipe of high quality carbon structural steel Grade 20
20 # seamless pipe Standard: GB / T8162-2008 GB3087- 2008 GB6479-2000 GB9948-2006
20 # seamless steel pipe Features and Scope: Slightly higher than the 15 steel strength, rarely quenching, no temper brittleness.
High cold deformation plasticity, generally for bending, rolling, bending and hammer arch processing, arc welding and welding properties of the welding, gas welding, the thickness of small, demanding or complicated shape parts of the shape of the crack. Machinability Cold drawn or normalized state is better than the annealed state, generally used to manufacture less stressed and toughness requirements. Hardness less than 45 # seamless steel pipe.