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GB/T 29537-2013: Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 29537-2013 | English | 229 |
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Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads
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GB/T 29537-2013
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PDF similar to GB/T 29537-2013
Basic data | Standard ID | GB/T 29537-2013 (GB/T29537-2013) | | Description (Translated English) | Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J04 | | Classification of International Standard | 21.040.30 | | Word Count Estimation | 10,145 | | Quoted Standard | GB/T 14791 | | Adopted Standard | DIN 40430-1971, NEQ | | Regulation (derived from) | National Standards Bulletin 2013 No. 9 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the type tooth angle of 80 ��, deputy does not have threaded cylindrical pipe thread sealing tooth type, dimensions, tolerances, marking and testing. This standard applies to thin-walled tube threaded connection. | GB/T 29537-2013: Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads
---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.
Pipe threads with 80 degree thread angle where pressure-tight joints are not made on the threads
ICS 21.040.30
J04
National Standards of People's Republic of China
80 ° non-sealing pipe thread
Issued on. 2013-06-09
2014-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
The standard reference DIN40430. 1971 "Steel conduit thread size" drafting.
This standard by the National Standardization Technical Committee thread (SAC/TC108) and focal points.
This standard is drafted by. Ningbo Crescent Instrument Technology Co., Ltd., machine Productivity Promotion Center.
Participated in the drafting of this standard. Zhejiang Institute of Metrology, Tobacco Machinery Technology Center LLC.
The main drafters of this standard. Mao Zhenhua, Zhang Jianjun, Li Xiaobin, Xu Qingtao.
80 ° non-sealing pipe thread
1 Scope
This standard specifies the type of tooth type tooth angle of 80 °, the thread does not have a deputy sealing cylindrical pipe threads, dimensions, tolerances, marking and testing.
This standard applies to thin-walled threaded pipe connections.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 14791 threads term
3 Terms, definitions and symbols
3.1 Terms and Definitions
Terms and definitions GB/T 14791 apply to this document defined.
3.2 Symbol
The following symbols apply to this document.
--- The D substantially large diameter of the internal thread;
d --- basic large diameter external thread;
Basic pitch diameter D2 --- internal threads;
d2 --- basic diameter external thread;
D1 --- basic trail internal threads;
d1 --- basic path external thread;
Number of threads within each n --- axial length 25.4mm included;
P --- pitch;
H --- original height triangle;
h --- a thread height;
r --- thread crest and bottom radius of curvature;
TD --- internal thread diameter tolerance;
Td --- outer thread diameter tolerances.
4 tooth type design
80 ° cylindrical pipe thread tooth type design should meet the requirements of Figure 1. The left and right flank angles are equal, the relative size according to the following formula.
H = 0.595876796P
h = 0.8H = 0.4767P
r = 0.107P
P = 25.4/n
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