This standard specifies the product classification, general provisions, requirements, sampling, test methods, inspection rules, marking, product quality certificate, instructions, packaging, transportation and storage of glass fiber reinforced magnesium oxychloride cement ventiduct (hereinafter referred to as "ventiduct").
This standard is applicable to the ventiduct with modified magnesium oxychloride cement as bonding material, medium-alkali or non-alkali glass fiber cloth as reinforcing material and moulded polystyrene foam plastic for thermal insulation and the like as core material.
2 Normative References
The following documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.
GB/T 1043-1993 Plastics Determination of Charpy Impact Strength of Rigid Materials
GB 8624-1997 Classification for Burning Behavior of Building Materials and Products
GB/T 10801.1-2002 Moulded Polystyrene Foam Board for Thermal Insulation
GB/T 18370-2001 Glass Fibre Woven Roving
GB 50243 Code of Acceptance for Construction Quality of Ventilation and Air Conditioning Works
JC/T 449-2000 Raw Materials for Magnesia Cement
JC 561-1994 Glass Fiber Cloth
JGJ 141-2004 Technical Specification of Air Duct
3 Product Classification
3.1 Classification
Ventiducts were divided into three classes according to the structure, i.e. integral common ventiduct, integral insulating ventiduct and combined insulating ventiduct.
Note: other types of ventiducts may be produced upon the agreement of the Supplier and the Purchaser.
