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GB/T 2878.4-2011: Connections for hydraulic fluid power -- Ports and stud ends with metric threads and O-ring sealing -- Part 4: Hex plugs
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| GB/T 2878.4-2011 | English | 329 |
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Connections for hydraulic fluid power -- Ports and stud ends with metric threads and O-ring sealing -- Part 4: Hex plugs
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GB/T 2878.4-2011
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Basic data | Standard ID | GB/T 2878.4-2011 (GB/T2878.4-2011) | | Description (Translated English) | Connections for hydraulic fluid power -- Ports and stud ends with metric threads and O-ring sealing -- Part 4: Hex plugs | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | J20 | | Classification of International Standard | 23.100.40 | | Word Count Estimation | 14,162 | | Date of Issue | 2011-12-30 | | Date of Implementation | 2012-10-01 | | Quoted Standard | GB/T 193; GB/T 197-2003; GB/T 2878.2; GB/T 3103.1-2002; GB/T 3452.2-2007; GB/T 5267.1; GB/T 5267.2; GB/T 5576; GB/T 6031; GB/T 10125; GB/T 17446; GB/T 26143 | | Adopted Standard | ISO 6149-4-2006, MOD | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 22 of 2011 | | 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 provides for GB/T 2878. 1 oil port specified in hex ??and hex plug size and performance requirements. Comply with this part of the plug for the maximum working pressure 63MPa (630bar). Allowable working pressure should be based on the end plug size, material, structure, working conditions and other conditions to determine the application. Comply with the provisions of this section only the size of hexagonal plug can not guarantee the achievement of specified performance requirements of this section. To ensure the hexagonal plug in line with its rated performance, the manufacturer shall follow the provisions of this part of the technical specifications for testing. | GB/T 2878.4-2011: Connections for hydraulic fluid power -- Ports and stud ends with metric threads and O-ring sealing -- Part 4: Hex plugs
---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 Ports and stud ends with metric threads and O-ring sealing Part 4. Hex plugs
ICS 23.100.40
J20
National Standards of People's Republic of China
Hydraulic connection with metric threads and
Ports and stud ends with O-ring seals
Part 4. Screw Plugs
Part 4. Hexplugs
(ISO 6149-4.2006, Connectionsforfluidpowerandgeneraluse-
PortsandstudendswithISO 261metricthreadsandO-ringsealing-
Part 4. Dimensions, design, testmethodsandrequirementsforexternal
hexandinternalhexportplugs, MOD)
Issued on. 2012-10-01 2011-12-30 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 2878 "Hydraulic fluid connection with metric threads and O-ring seal Ports and stud ends" is divided into four parts.
--- Part 1. Ports;
--- Part 2. Heavy stud ends (S series);
--- Part 3. Light stud ends (L series);
--- Part 4. Screw Plugs.
This section GB/T 42878 Part of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section uses redrafted Law Amendment uses ISO 6149-4.2006 "fittings for hydraulic fluid power and general use of the band
ISO 261 metric threads and O-ring seal Ports and stud ends - Part 4. external hex and hex plug Dimensions, design, test
Methods and technical requirements. "
This part of ISO 6149-4.2006 and the technical differences for the following reasons.
--- On normative references, this part has been adjusted technical differences, in order to adapt our technical conditions, adjustments
Focus reflected in Chapter 2;
--- The plug material from low carbon steel to carbon steel (see 10.1);
--- Canceled the plug tag name label (see Chapter 8);
--- The plug identity changed in Size permit identification should be made (see Chapter 9);
--- Increasing the variety of plug-molding method shall meet the performance requirements (see Chapter 10);
--- Increasing the surface roughness of the sealing surface Ra≤3.2μm (see 10.2);
--- Increasing the hex right side view (see Figure 1).
This part made the following editorial changes.
--- Simplified standard name;
--- The "international standards in this section" to "this Part";
--- Increase the "References."
This part is proposed by China Machinery Industry Federation.
This part of the National Standardization Technical Committee of hydraulic and pneumatic (SAC/TC3) centralized.
This section is responsible for drafting unit. Zhejiang Jiangsu Jiang grid hydraulic Co., Ltd., Jiangsu Machinery Research and Design Institute Co., Ltd., the machine
Productivity Promotion Center.
Participated in the drafting of this section. Haiyan Pipe Manufacturing Co., Ltd., Shanghai Lixin Hydraulic Co., Ltd., China Shipbuilding Industry Corporation 704 Research
The Zhejiang Huaxia Valve Co., Ltd. Ningbo City Hengtong Hydraulic.
The main drafters of this section. Luoxue Rong, cattle on Jun, Yang Yongjun, Feng Feng, Geng Zhi school, early Zhu Xu, Shanghai Hai Peng, Chang Jian Zou, Wei Bin, Hung Chao,
Yang Mao, Liang Yong.
Introduction
In fluid power systems, power is through a closed loop pressurized fluid (liquid or gas) and pass control. In general should
Use, the fluid can be delivered under pressure.
Element fittings or hose connector to threaded ports connected by a tube or hose. By screwing plug port can be closed.
Hydraulic connection with metric threads and
Ports and stud ends with O-ring seals
Part 4. Screw Plugs
1 Scope
This section GB/T 2878 specifies the external hex and internal hex plugs the size of the provisions applicable to the GB/T 2878.1 and the oil port
Performance requirements.
Compliance with plugs in this section applies to the maximum working pressure of 63MPa (630bar). Allowable working pressure should be based on the size of the plug end,
Materials, structures, working conditions and other conditions to determine the application.
Only compliance with this predetermined size hex plug fails to satisfy the provisions of this part of the specified performance. In order to ensure compliance with its hexagonal plug
Rated performance, the manufacturer shall be tested according to the technical specifications specified in this part.
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 193 common thread diameter and pitch series
GB/T 197-2003 common thread tolerance
Ports and stud ends of GB/T 2878.2 Hydraulic connection with metric threads and O-ring seal 2. Heavy Stud
Ends (S series) (ISO 6149-2)
GB/T 3103.1-2002 Tolerances for fasteners - Bolts, screws, studs and nuts (ISO 4759-1)
GB/T 3452.2-2007 hydraulic and pneumatic rubber O-ring Part 2. appearance quality inspection standard (ISO 3601-3)
GB/T 5267.1 fasteners plating layer (ISO 4092)
GB/T 5267.2 fasteners non-electrolytic zinc flake coatings (ISO 10683)
GB/T 5576 rubber and latex nomenclature (ISO 1629)
GB/T 6031 Determination of vulcanized rubber or thermoplastic rubber hardness (10 ~ 100IRHD) (ISO 48)
GB/T 10125 artificial atmosphere corrosion test salt spray test
GB/T 17446 Fluid power systems and components terminology (ISO 5598)
GB/T 26143 hydraulic fittings test methods (ISO 19879)
3 Terms and Definitions
GB/T 17446 and as defined in the following terms and definitions apply to this section.
3.1
Plug plug
Stud fluid passage without end, for sealing off the oil.
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