Detailed Product Description Name:Jib used seamless steel pipeContentStandardQ/OHAD015-2008 Uses Tolerancesdiameterthicknessweight tolerance Item Size,mm tolerance,% Hot-rolled pipe outside diameter D +12.5% thickness S -10% cold drawing pipe outside diameter D ±1% thickness S ±10% Capability listNO Yield strength Rel, MPaTensile strength Rm, MPaElongation rate A,%Impact energy Akv-20,J HSM450 ≥ ...