People's Republic of black說科 metallurgy industry st鄉讀andard YB / T 4001.1-2007
National Development and Reform 拍們Commission issued
Foreword
YB / T 4001 "steel grat暗林ing and the package" is divided文又 into three parts:
- Part I: steel grat哥年ing;
- Part II: steel railings;
- Part III: ladders.
This section YB / T 4001 Part 1.
This section refer to the use of 呢唱ISO 14122-2:2001 "Safety of ma看友chinery into the machi房很nery and industrial equipm白數ent, fixed facilities, Part 2:對關 Working platforms and channe議嗎ls."
This section instead of YB / T 火師4001-1998 "steel grating.&qu愛裡ot;
YB-T4001.1-2007Lattice steel plate