GB/T 39817-2021 English PDFUS$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 39817-2021: Conveyor belts - Propane burner mid-scale flammability test method Status: Valid
Basic dataStandard ID: GB/T 39817-2021 (GB/T39817-2021)Description (Translated English): Conveyor belts - Propane burner mid-scale flammability test method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: G42 Word Count Estimation: 14,166 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 39817-2021: Conveyor belts - Propane burner mid-scale flammability test method---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.Conveyor belts - Propane burner mid-scale flammability test method ICS 53.040.20 G42 National Standards of People's Republic of China Conveyor belt propane burner Medium-scale flammability test method Released on 2021-03-09 2021-10-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Belt Wheel and Belt Standardization Technical Committee Conveyor Belt Subcommittee (SAC/TC428/SC1). This standard was drafted by. Zhongnan Rubber Group Co., Ltd., Zhejiang Fenfei Rubber Products Co., Ltd., Qingdao University of Science and Technology. The main drafters of this standard. Yang Jie, Zheng Shisheng, Xin Yonglu, Wang Chuangui. Conveyor belt propane burner Medium-scale flammability test method1 ScopeThis standard specifies the test method for the combustibility of conveyor belts in relatively high local heat sources (such as fire). This standard is applicable to the large-scale flammability test of propane burners in flame-retardant conveyor belts.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. ISO 9162 Petroleum Products Fuels (Class F) Liquefied Petroleum Gas Specification [Petroleumproducts-Fuels(classF)- Liquefiedpetroleumgases-Specifications]3 Propane gas supplyThe bottled propane gas used in this test is in accordance with ISO 9162.The propane gas enters through a high-pressure hose with an inner diameter of at least 6.3 mm. There are two options for the burner. a) Pass a pressure reducing valve, a check valve and a standard orifice plate with a thickness of 1.7mm and a hole diameter of 2.5mm; b) A pressure reducing valve and a check valve equipped with a high-precision flow meter are used to ensure accurate metering of the consumed gas. Before and during the test, the propane bottle must be immersed in water at a temperature of (25±3)℃, and the depth of immersion is approximately the height of the propane bottle Two-thirds of the degree. At the end of the test, the remaining gas in the propane bottle should not be less than 10% of the capacity of the bottle.4 devices4.1 Roadway The roadway (see Figure 1 and Figure 2) consists of a chamber whose outer wall is made of refractory materials with a thickness of 25 mm. Its entrance size It is 460mm×460mm, the length is 1676mm, through a stainless steel conical connector with a wall thickness of 1.5mm and a diameter of 300mm Connected to the exhaust pipe. The thermal conductivity of the refractory material between 20°C and.200°C is (0.14±0.02)W/(m·K). Exhaust fan should be installed It is installed behind the exhaust pipe to allow air to pass through the tunnel, and the flow rate of the air is controlled by the exhaust control valve. 4.2 Exhaust hood The exhaust hood is made of stainless steel and has a thickness of 1.5mm. It is placed directly above the test chamber for suction. It may be removed from the chamber during the test. Fumes escaping from the entrance of the room. 4.3 Bracket The bracket (see Figure 3) is used to place the sample. It is made of a low-carbon steel rod with a diameter of 10mm. With a threading loop that can hold samples of the conveyor belt. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 39817-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 39817-2021_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 39817-2021_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 39817-2021_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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