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GB/T 42086.2-2022Connections for hydraulic fluid power - Flange connections - Part 2: Series of 42 MPa, DN13 to DN76 (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

December 30, 2022

Scope

GB/T 42086.2-2022 (Connections for hydraulic fluid power - Flange connections - Part 2: Series of 42 MPa, DN13 to DN76) is available as an English-translated PDF.

GB/T 42086.2-2022 is the Chinese standard "Connections for hydraulic fluid power - Flange connections - Part 2: Series of 42 MPa, DN13 to DN76". Its scope clause reads: This document specifies the method for hard pipe joints and hose joints (DN13~DN76) of the four-screw fastening flange clamp type at 42MPa.

General requirements and dimensions for flange heads, split flange clamps (FCS and FCSM), integral flange clamps (FC and FCM), ports and mounting surfaces; also It specifies the requirements and dimensions of the sealing rings and sealing grooves used together.

This document applies to connections for hydraulic systems of industrial and commercial products where threaded pipe joints are not convenient. Note. This document recommends the use of metric thread fasteners (type 1, DN13~DN76), and also provides the use of existing inch thread fasteners (type 2, DN13~DN76). DN51) method.

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Document preview — GB/T 42086.2-2022

National Standard of the People's Republic of China

ICS: 23.100.40
Classification: J 20

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Material
5 Selection
6 Dimensions and tolerances
7 Surface requirements
8 Pressure/Temperature Requirements
9 mark
10 Naming of flange joints and parts
Appendix B (informative) O-ring code and size

1 Scope

This document specifies the method for hard pipe joints and hose joints (DN13~DN76) of the four-screw fastening flange clamp type at 42MPa.

General requirements and dimensions for flange heads, split flange clamps (FCS and FCSM), integral flange clamps (FC and FCM), ports and mounting surfaces; also

It specifies the requirements and dimensions of the sealing rings and sealing grooves used together.

This document applies to connections for hydraulic systems of industrial and commercial products where threaded pipe joints are not convenient.

Note. This document recommends the use of metric thread fasteners (type 1, DN13~DN76), and also provides the use of existing inch thread fasteners (type 2, DN13~DN76).

DN51) method.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 70.1 Hexagon socket head cap screws (GB/T 70.1-2008, ISO 4762.2004, MOD)

GB/T 97.1 Flat Washer Grade A (GB/T 97.1-2002, eqvISO 7089.2000)

GB/T 131 Product Geometry Technical Specification (GPS) Representation of Surface Structure in Technical Product Documentation (GB/T 131-2006,

ISO 1302.2002, IDT)

GB/T 193 Common thread diameter and pitch series (GB/T 193-2003, ISO 261.1998, MOD)

GB/T 196 Basic dimensions of ordinary thread (GB/T 196-2003, ISO 724.1993, MOD)

GB/T 1804 General tolerances Tolerances of linear and angular dimensions without tolerances (GB/T 1804-2000, eqvISO 2768-1.

1989)

GB/T 3098.1 Mechanical properties of fasteners Bolts, screws and studs (GB/T 3098.1-2010, ISO 898-1.2009,

MOD)

GB/T 3452.2 O-ring rubber seals for hydraulic and pneumatic use Part 2.Specifications for inspection of appearance quality (GB/T 3452.2-2007,

ISO 3601-3.2005, IDT)

GB/T 5783 Hexagon head bolts with full thread (GB/T 5783-2016, ISO 4017.2014, MOD)

GB/T 6031 Determination of hardness of vulcanized rubber or thermoplastic rubber (10IRHD~100IRHD) (GB/T 6031-2017,

ISO 48.2010, IDT)

GB/T 10125 Artificial atmosphere corrosion test Salt spray test (GB/T 10125-2021, ISO 9227.2017, MOD)

GB/T 17446 Vocabulary for fluid transmission systems and components (GB/T 17446-2012, ISO 5598.2008, IDT)

GB/T 20670 Unified thread diameter and thread number series (GB/T 20670-2006, ISO 263.1973, MOD)

GB/T 26143 Test method for hydraulic pipe joints (GB/T 26143-2010, ISO 19879.2010, IDT)

ISO 725 ISO inchscrewthreads-Basicdimensions

ISO 3601-1 O-rings for fluid power systems - Part 1.Bore diameter, cross-section, tolerances and designations (Fluidpowersys-

Note. GB/T 3452.1-2005 O-ring rubber seals for hydraulic and pneumatic use Part 1.Dimension series and tolerances (ISO 3601-1.2002, MOD)

GB/T 42155 | GB/T 40565.2 | GB/T 40565.3 | GB/T 42086.3 | GB/Z 42085 | GB/T 42087 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 37 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 4762.2004 · ISO 1302.2002 · ISO 261.1998 · ISO 724.1993 · ISO 898 · ISO 3601 · ISO 4017.2014 · ISO 48.2010 · ISO 9227.2017 · ISO 5598.2008 · ISO 263.1973 · ISO 19879.2010 · ISO 725

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