JB/T 53172-1999
Liquefied Petroleum Gas Cylinder Valve - Product Quality Grading
液化石油气瓶阀 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品质量等级 → 4 试验方法 → 5 抽样和等级评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test Methods → 5 Sampling and Grade Evaluation Methods
Scope
This standard specifies the quality grades, test methods, sampling, and grade evaluation methods for liquefied petroleum gas cylinder valve products. This standard applies to valves for liquefied petroleum gas cylinders as specified in GB 7512.
本标准规定了液化石油气瓶阀产品的质量等级、试验方法、抽样和等级评定方法。本标准适用于GB 7512 规定的液化石油气瓶用阀。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of LPG cylinder valves use this standard to classify and test product quality. By defining specific performance criteria for qualified, first-class, and premium grades, it helps ensure valve safety and reliability. This standard is crucial for safeguarding the use of LPG cylinders and improving overall industry product quality.
液化石油气瓶阀的制造商和质检机构使用本标准来对产品进行质量分级和检验。通过规定合格品、一等品和优等品的具体性能指标，本标准帮助确保阀门的安全性和可靠性。它对于保障液化石油气瓶的使用安全、提升行业产品质量水平具有重要意义。
AI Summary AI generated
This standard JB/T 53172-1999 is a revision of JB/T 53172-94 for product quality grading of LPG cylinder valves. It classifies products into three grades: qualified, first-class, and premium, specifying assessment items and performance criteria including valve body taper thread inspection, opening/closing torque, leak tightness, pressure resistance, vibration resistance, temperature resistance, and durability tests. Test methods reference GB 7512. Sampling is random from qualified inventory or unused products, with a minimum of 100 units per specification and 3 units sampled; one unit is selected for durability testing. Test results must meet the corresponding grade requirements, and re-sampling is not allowed.
本标准JB/T 53172-1999是对液化石油气瓶阀产品质量分等的修订，替代了JB/T 53172-94。标准将产品分为合格品、一等品和优等品三个等级，并规定了各等级的考核项目与性能指标，包括阀体锥螺纹检测、启闭力矩、气密性、耐压性、耐振性、耐温性和耐用性试验。试验方法引用GB 7512，抽样从合格库存或未使用产品中随机抽取，每个规格至少100台，抽样3台，耐用性试验选1台。检测结果必须达到相应等级要求，不允许再次抽样。
Key Sentences extracted from text
本标准规定了液化石油气瓶阀产品的质量等级、试验方法、抽样和等级评定方法。
液化石油气瓶阀根据质量水平和使用价值分为合格品、一等品和优等品三个等级。
被检样品可以从生产厂质量检验部门检验合格的库存产品中随机抽取，或从已供给用户但未使用并且保持出厂状态的产品中随机抽取。
合格品、一等品和优等品的检测结果应达到相应质量等级的规定，不允许再次抽样。
阀门在–40 ~ + 60℃温度范围内均无泄漏。
This standard specifies the quality grades, test methods, sampling, and grade evaluation methods for liquefied petroleum gas cylinder valve products.
Liquefied petroleum gas cylinder valves are divided into three grades: qualified product, first-class product, and premium product, based on quality level and use value.
Samples to be inspected may be randomly selected from the inventory of products that have passed inspection by the manufacturer's quality inspection department, or from products that have been supplied to users but are unused and remain in their出厂 state.
The test results for qualified, first-class, and premium products shall meet the requirements of the corresponding quality grade, and re-sampling is not permitted.
The valve shall have no leakage within the temperature range of –40 to +60°C.
Standard Timeline
Changes from replaced version:
- 增加了阀体锥螺纹、启闭力矩和耐压性三项试验项目
- Added three test items: valve body taper thread inspection, opening/closing torque, and pressure resistance test