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GB/T 41981.1-2022 English PDF

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GB/T 41981.1-2022: Connections for hydraulic fluid power - Couplings for diagnostic purposes - Part 1: Coupling not for connection under pressure
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GB/T 41981.1-2022English189 Add to Cart 3 days [Need to translate] Connections for hydraulic fluid power - Couplings for diagnostic purposes - Part 1: Coupling not for connection under pressure Valid GB/T 41981.1-2022

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Basic data

Standard ID GB/T 41981.1-2022 (GB/T41981.1-2022)
Description (Translated English) Connections for hydraulic fluid power - Couplings for diagnostic purposes - Part 1: Coupling not for connection under pressure
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J20
Classification of International Standard 23.100.40
Word Count Estimation 10,154
Date of Issue 2022-10-14
Date of Implementation 2022-10-12
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 41981.1-2022: Connections for hydraulic fluid power - Couplings for diagnostic purposes - Part 1: Coupling not for connection under pressure


---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.
Connections for hydraulic fluid power -- Couplings for diagnostic purposes -- Part 1.Coupling not for connection under pressure ICS 23.100.40 CCSJ20 National Standards of People's Republic of China Hydraulic transmission connection pressure measuring joint Part 1.Non-pressurized connection Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Performance Requirements 1 5 Design 2 6 Manufacturing 3 7 Nomenclature of connectors 3 8 Mark 3 9 Notes (citing this document) 3

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is the first part of GB/T 41981 "Hydraulic Transmission Connection Pressure Measuring Joints". GB/T 41981 has issued the following part. --- Part 1.Non-pressurized connection type; --- Part 2.Can be connected under pressure. This document is modified to adopt ISO 15171-1.1999 "Hydraulic fittings for fluid transmission and general purpose fittings for diagnostic purposes" Part 1.Fittings for Non-Pressure Connections". This document has the following structural adjustments compared to ISO 15171-1.1999. ---4.2, 4.3, 4.4, 4.5 correspond to 4.1, 4.2, 4.3, 4.4 of ISO 15171-1.1999 respectively. The technical differences between this document and ISO 15171-1.1999 and their reasons are as follows. --- Changed the scope (see Chapter 1, Chapter 1 of ISO 15171-1.1999) to adapt to the technical conditions of our country; --- Replaced ISO 6149-1 (see Chapter 1) with the normatively cited GB/T 2878.1 to adapt to my country's technical conditions and improve Operability; --- Replaced ISO 5598.1985 (see Chapter 3) with the normatively cited GB/T 17446 to adapt to the technical conditions of our country, high operability; --- Delete the definition of "quick connection" (see 3.1 of ISO 15171-1.1999) to adapt to the technical conditions of our country; --- Added general rules for performance requirements (see 4.1) to adapt to my country's technical conditions and improve operability; --- Added normative reference to ISO 18869 (see 4.3) to adapt to my country's technical conditions and improve operability; --- Added normative reference to GB/T 26143 (see 4.5) to adapt to my country's technical conditions and improve operability; --- Delete the normative reference ISO 8434-5.1995 (see ISO 15171-1.1999, 4.4) to adapt to our country's technology condition; --- Replaced ISO 6149-2 (see 4.5, Chapter 5) with the normatively cited GB/T 2878.2 to adapt to the technical conditions of our country, improve operability; --- Change the surface roughness (Ra) of paragraph "4.57" in footnote d from "≤2.5μm" to "≤3.2μm" (see Figure 1) to adapt to our country technical conditions to improve operability; --- Replaced ISO 9227.1990 (see 6.3) with the normatively quoted GB/T 10125 to adapt to the technical conditions of our country and improve the availability operational; --- Changed the requirements for surface treatment (see 6.3, 6.3 of ISO 15171-1.1999) to adapt to the technical conditions of our country and improve the availability operational; --- Replaced ISO 1629.1995 (see Chapter 7) with the normatively cited GB/T 5576 to adapt to the technical conditions of our country and improve Operability. The following editorial changes have also been made to this document. --- In order to coordinate with the existing standards, the standard name is changed to "Hydraulic Transmission Connection Pressure Measuring Joint Part 1.Non-pressurized Connection Type". Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Hydraulic Pneumatic Standardization Technical Committee (SAC/TC3). This document is drafted by. Sany Automobile Manufacturing Co., Ltd., Zhejiang Songqiao Pneumatic Hydraulic Co., Ltd., Shenzhen Costeng Hydraulic Equipment Co., Ltd. Co., Ltd., Weilang (Xiamen) Metrology Technology Co., Ltd., Xiamen Qinghua Intelligent Transmission Co., Ltd., Hunan University, Guangdong Hengxinya Technology Co., Ltd. Company, Beijing Machinery Industry Automation Research Institute Co., Ltd. The main drafters of this document. He Dian, Zeng Bin, Lou Zhongyu, Wang Xueguo, Wu Zhantao, Lu Zhixue, Guo Weilin, Xiang Daxin, Huang Qiongfang, Cao Qiaohui.

Introduction

Pressure measuring joint is an important component of fluid transmission system testing, mainly used for sampling, pressure, temperature and other parameters of fluid system diagnosis. GB/T 41981 aims to standardize the dimensions, performance requirements and test methods of pressure measuring joints in hydraulic transmission connections, and consists of two parts. --- Part 1.Non-pressurized connection. The purpose is to determine the dimensions, performance requirements and experiment method. --- Part 2.Can be connected under pressure. The purpose is to determine the size, performance requirements and testing test method. Hydraulic transmission connection pressure measuring joint Part 1.Non-pressurized connection

1 Scope

This document specifies that the stud end thread is M14×1.5, and the maximum working pressure is Performance requirements, design, manufacture, naming and marking of 40MPa pressure measuring joints. This document applies to pipe joints of hydraulic systems using mineral oil as the working medium. Note. When used for non-mineral oil working medium, it should be negotiated by both the supplier and the buyer.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 2878.1 Hydraulic transmission connections with metric threads and O-ring seals for oil ports and stud ends - Part 1.Oil ports (GB/T 2878.1-2011, ISO 6149-1.2006, IDT) GB/T 2878.2 Hydraulic transmission connections with metric threads and O-ring seals for oil ports and stud ends - Part 2.Heavy duty studs End (S series) (GB/T 2878.2-2011, ISO 6149-2.2006, MOD) GB/T 5576 Rubber and Latex Nomenclature (GB/T 5576-1997, idtISO 1629.1995) GB/T 10125 Artificial Atmosphere Corrosion Test Salt Spray Test (GB/T 10125-2021, ISO 9227.2017, MOD) GB/T 17446 Vocabulary of Fluid Transmission Systems and Components (GB/T 17446-2012, ISO 5598.2008, IDT) GB/T 26143 Test method for hydraulic pipe joints (GB/T 26143-2010, ISO 19879.2010, IDT)

3 Terms and Definitions

Terms and definitions defined in GB/T 17446 apply to this document.

4 Performance requirements

4.1 General Products conforming to the dimensions of this document are not guaranteed to achieve rated performance. Manufacturers are required to conduct tests in accordance with the specifications contained in this document to Make sure components meet rated performance. 4.2 Working pressure and temperature The maximum working pressure of the pressure measuring joint should be 40MPa, and the working temperature range should be -20℃~120℃. NOTE. The operating temperature range of fittings with elastomeric seals depends on the seal. 4.3 Rated flow The rated flow of the pressure measuring joint should be 3L/min, the maximum pressure drop should be 0.5MPa, and the maximum impact flow should be 15L/min. test should

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