... a) GB / QB: QCr0.5, QCr0.5Zr0.15, QZr0.2, Chromium copper Features: 1) Standards: a) GB / QB: ... QCr0.5, QCr0.5Zr0.15, QZr0.2, QZr0.4 b) ASTM / CDA: C18200, C181 Chromium ... : a) GB / QB: QCr0.5, QCr0.5Zr0.15, QZr0.2, QZr0.4 b) ASTM / CDA: C18200, C18150, C18100, C15000 ... / C15100 c) JIS: CuCr1Zr d) DIN: CuCrZr 2) Specification: 1.0 - 60.0mm 3) High strengthen (¦Ò ...