【国外标准】 Standard Specification for Steel Air Ventilating Grille Units for Detention Areas (Withdrawn 2004)
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2024-02-28
- ASTM A750-77(1994)e1
- Withdrawn, No replacement
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标准简介
适用范围:
1.1 This specification applies to air ventilating grille units for detention areas, assembled in part from materials conforming to Specifications A627, A628, and A629. 1.2 The assemblies described herein are intended to provide two types of security, designated Type A and Type B. 1.2.1 Type A -A ventilation unit, utilizing homogeneous TR steel bars for the principal security component. 1.2.2 Type B -A ventilation unit utilizing perforated tool-resisting steel plate for the principal security component. 1.3 It is presumed that equipment manufacturers will fabricate and assemble the materials so as not to impair the performance characteristics specified in the applicable material specifications. 1.4 The descriptions herein of certain assemblies are not intended to infer that other assemblies cannot be used to obtain similar results.
标准号:
ASTM A750-77(1994)e1
标准名称:
Standard Specification for Steel Air Ventilating Grille Units for Detention Areas (Withdrawn 2004)
英文名称:
Standard Specification for Steel Air Ventilating Grille Units for Detention Areas (Withdrawn 2004)标准状态:
Withdrawn, No replacement-
发布日期:
-
实施日期:
出版语种:
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