GB/T 9900-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9900-2025	RFQ	ASK	3 days	Rubber- or plastics-coated fabrics - Ventilation ducting	Valid
GB/T 9900-2008	329	Add to Cart	3 days	Rubber-or plastics-coated fabrics -- Ventilation ducting	Valid
GB/T 9900-1988	559	Add to Cart	4 days	Extractable ventilation rubber ducting of the fire retardant	Obsolete

Basic data

Standard ID: GB/T 9900-2025 (GB/T9900-2025)
Description (Translated English): Rubber- or plastics-coated fabrics - Ventilation ducting
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 9900-2008

GB/T 9900-2008: Rubber-or plastics-coated fabrics -- Ventilation ducting

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber-or plastics-coated fabrics. Ventilation ducting ICS 59.080.40 G42 National Standards of People's Republic of China Replacing GB/T 9900-1988 Rubber or plastic coated fabrics duct Posted 2008-05-14 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 9900-1988 "out of the fire retardant rubber duct", the former chemical industry standard HG/T 3325-1982 "Mine duct tape" also abolished. This standard and GB/T 9900-1988 compared to the main changes are as follows. --- With different names; --- Different scope, increase the positive pressure duct requirements (see Chapter 1); --- Increasing the physical and mechanical properties of the coated fabric requirements (this version 5.1.2); --- Increasing the length of 30m and duct size and appearance inspection requirements of 50m (Excerpts 5.2.1 and 5.2.2); --- Increasing the requirements and test methods 1600mm standard duct diameter to 1000mm (5.2.1 and Chapter 6 of this edition); --- Increasing the duct seam strength requirements (this version 5.2.3). Appendix A of this standard is a normative appendix. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Rubber and rubber products coated products Standardization Technical Committee Technical Committee (SAC/TC35/SC10) Centralized. This standard was drafted. Chengdu vision Composite Materials Co., Ltd., Jinan, Shandong Alliance Group Rubber Products Co., Ltd., Shenyang Rubber Rubber Group Institute of glue. Drafters of this standard. Yuan Ye, Zhang Quan, Deng Qing Long, Xu Weiqing, song books Yang, Li Sa, Tao. This standard replaces the standards previously issued as follows. --- GB/T 9900-1988. Rubber or plastic coated fabrics duct

1 Scope

This standard specifies the rubber or plastic coated fabric duct classification, structure, technical requirements, test methods, inspection rules, packaging, marking Chi, transportation and storage. This standard applies to positive and negative pressure duct with rubber or plastic coated fabrics made of. Mainly used in mines, tunnels, hydraulic engineering, land Rail and air defense projects.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement according to study Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 1222 spring steel GB/T 3078 quality structural steel cold-drawn steel technical conditions GB/T 10111 using random numbers dice random sampling method GB/T 13489-2008 Determination of rubber-coated fabric flammability Determination of GB/T 15335 duct leakage rate and windage HG/T 2580 Rubber or plastic coated fabrics tensile strength and elongation at break measurement (HG/T 2580-2008, ISO 1421.1998, IDT) HG/T 2581 Rubber or plastic coated fabrics - Determination of tear resistance (HG/T 2581-1994, neq ISO 4674. 1977) The third part of measuring HG/T 3050.3 rubber or plastic coated fabric roll characteristics. the method of measuring the thickness of (HG/T 3050.3-2001, idt ISO 2286-3.1998) Determination of HG/T 3052 Rubber or plastic coated fabrics - coating bond strength (HG/T 3052-2008, ISO 2411. 2000, IDT) Category 3 3.1 divided according to their use. --- Positive duct. for mine tunnels to Ventilator positive pressure given distance local ventilation; --- Vacuum duct. for mine tunnels and other exhaust ventilation and dust. 3.2 according to their performance is divided into. --- A class flame retardant anti-static duct. a flame retardant, antistatic properties; --- Class B, flame-retardant duct. flame retardant.

4 Structure

4.1 positive pressure duct structure shown in Figure 1. 4.2 suction duct structure shown in Figure 2. ......

Image     

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