Home / Standards / GB/T 19804- GB/T 19804- General tolerances for linear and angular dimensions and geometrical tolerances for welded structures—2005/ISO 13920:1996 焊接结构的一般尺寸公差和形位公差 2005/ ISO 13920:1996 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A