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GB/T 37050-2019 English PDF

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US$279.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 37050-2019: Fastening screw thread gaging systems for acceptability
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37050-2019	279	Add to Cart	3 days	Fastening screw thread gaging systems for acceptability	Valid

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Basic data

Standard ID: GB/T 37050-2019 (GB/T37050-2019)
Description (Translated English): Fastening screw thread gaging systems for acceptability
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 21.040.01
Word Count Estimation: 14,187
Date of Issue: 2019-03-25
Date of Implementation: 2019-03-29
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37050-2019: Fastening screw thread gaging systems for acceptability

---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.
Fastening screw thread gaging systems for acceptability ICS 21.040.01 J04 National Standards of People's Republic of China Fastening thread inspection system Published on.2019-03-25 Implementation of.2019-03-29 State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Thread Standardization Technical Committee (SAC/TC108). Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard was drafted. Shanghai Institute of Metrology and Testing Technology, China Machine Productivity Promotion Center, Suzhou Edmond Measurement and Control System Limited Company, Shenzhen Zhongtu Instrument Technology Co., Ltd., Shanghai Fasteners and Welding Materials Technology Research Institute Co., Ltd., Guangdong Metrology Science Research Institute, Nanjing Dott Tools Co., Ltd. The main drafters of this standard. Cai Minggang, Li Xiaobin, Zhang Xuzeng, Wang Jian, Cao Chengming, Ma Junjie, Xue Junyi, Liang Ping, Li Xuelin. Fastening thread inspection system

1 Scope

This standard specifies the tightening thread detection system consisting of test parameters, test requirements and test methods. This standard applies to the thread acceptance of fastening thread products.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 14791 thread terminology GB/T 28703-2012 cylindrical thread testing method

3 Terms and definitions

The following terms and definitions as defined in GB/T 14791 apply to this document. 3.1 Stop end diameter NOTGOfunctionaldiameter It just fits the imaginary thread diameter of the actual thread flank. The imaginary thread has the ideal tooth type and the most specified by the stop gauge standard Large twist length. Note. The threaded end ring and plug gauge can only check the screw-in end of the workpiece thread. 3.2 Radial diameter difference variationofpitchdiameterindifferentradialdirections The maximum difference between each radial mid-range (taken a positive value) over a lead length. Note. The radial section shape of the medium diameter cylinder is usually elliptical or triangular. Two-point contact (180° between two probes) and three-point contact (three measurements) The head spacing 120°) gauge measures the median diameter in the elliptical and triangular cross sections, respectively. 3.3 Axial diameter difference variationofpitchdiameteratdifferentaxialpositions The maximum difference between the diameters in each axial position (taken a positive value) in the plane of the thread axis and the specified length of the screw. Note. The axial intermediate diameter difference can only be measured at both ends of the complete thread with the agreement of the supplier and the buyer. 3.4 Tooth type comprehensive deviation cumulativeformdeviation Deviation from other thread parameters (pitch, flank angle, radial radial diameter difference, axial intermediate diameter difference, etc.) other than the middle diameter within the specified screw length The maximum change in the median diameter caused by the combined action.

4 Testing system

The three fastening thread detection systems consisting of test parameters, test requirements and test methods are. System A, System B and System C. tight The inspection systems for external and internal threads are shown in Tables 1 and 2, respectively. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 37050-2019_English be delivered?

Answer: Upon your order, we will start to translate GB/T 37050-2019_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 37050-2019_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 37050-2019_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.