GB1215162187304318099
COLD DRAWN SEAMLESS (CDS) MECHANICAL PRECISION NON-ALLOY CIRCULAR STEEL TUBE. GRADE EN 10305-1 E235 + C 457MM OUTSIDE DIAMETER. WITH AN AVERAGE CARBON EQUIVALENT OF 0.45. 50MM WALL AND 357MM BORE. THE INTERNAL OR EXTERNAL ARE NOT SMOOTH, SHINY OR POLISHED.