Black metallurgical industry s微師tandard

People's Republic of bl多動ack metallurgy indust笑雪ry standard YB / T 400拿煙1.1-2007

National Development and 放她Reform Commission issued

Foreword

YB / T 4001 "steel grating and th科工e package" is divided into t理靜hree parts:

- Part I: steel grating;

- Part II: steel railings;

- Part III: ladders.

This section YB / T 4001 Part 1.

This section refer to th坐公e use of ISO 14122-2:2001 "火到;Safety of machinery in劇風to the machinery and industrial equipm笑這ent, fixed facilities, Part 2: Wor土跳king platforms and channels."

This section instead of YB 綠體/ T 4001-1998 "steel grating."火農;

YB-T4001.1-2007Lattice steel pl女很ate