Home / Standards / JB/T 3411.54 JB/T 3411.54 Standard Type JBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A 📋 Scope / 适用范围 ai_extracted 本标准规定了划规的型式和尺寸。 Content extracted by AI. Not officially verified.