Home / Standards / GB/T 157-2001 GB/T 157-2001 Abolished Geometrical product specifications(GPS)--Series of conical tapers and taper angles 产品几何量技术规范(GPS) 圆锥的锥度与锥角系列 Standard Type GBT ICS 17.040.10 CCS J04 Status 废止 Issue Date 2001-09-15 Implementation 2002-04-01 Responsible Dept 国家标准委 Drafting Unit N/A