GB/T 14034.4-2023Connections for hydraulic fluid power - Metallic tube connectors - Part 4: 60 degree cone connectors (English PDF)

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 for Standardization Documents" drafting.

This document is part 4 of GB/T 14034 "Metal Pipe Fittings for Hydraulic Transmission Connections". GB/T 14034 has issued the following part.

--- Part 1. 24° cone;

--- Part 2. 37° flared type;

--- Part 4. 60 ° cone.

This document is modified to adopt ISO 8434-6:2009 "Fluid Power and General Metal Pipe Connections Part 6. With or without O-rings 60° Conical Fittings".

Compared with ISO 8434-6:2009, this document has made the following structural adjustments.

--- Added "Table 2", the original "Table 2" and subsequent table numbers are extended;

--- Added "Figure 2", the number of the original "Figure 2" and subsequent figures is extended;

--- "15.1" corresponds to "15.1.1" of ISO 8434-6:2009, "15.2" is added, "15.2.1~15.2.6" corresponds to ISO 8434-6:2009 "15.1.2~15.1.7", "15.2.7" corresponds to "15.2" of ISO 8434-6:2009.

The technical differences between this document and ISO 8434-6:2009 and their reasons are as follows:

--- Replaced ISO 5598:2008 (see Chapter 3) with the normatively quoted GB/T 17446 to adapt to my country's technical conditions and improve high operability;

--- Changed the terms and definitions (see Chapter 3, Chapter 3 of ISO 8434-6:2009);

--- Replaced ISO 3601-3 (see 4.4) with the normatively quoted GB/T 3452.2 to adapt to my country's technical conditions and improve operability active;

--- Replaced ISO 48 (see 4.4) with the normatively quoted GB/T 6031 to adapt to my country's technical conditions and improve operability;

--- Replaced ISO 6149-3 (see 5.1) with the normatively quoted GB/T 2878.3 to adapt to my country's technical conditions and improve operability active;

--- Replaced ISO 10763 (see 7.2) with the normatively quoted GB/T 41354 to adapt to my country's technical conditions and improve operability active;

--- GB/T 3639 (see 7.3) for normative references has been added to adapt to the technical conditions of our country and improve operability;

--- Deleted the normative references ISO 3304 and ISO 3305 (see 7.3 of ISO 8434-6:2009) to adapt to my country's technology condition;

--- Replaced ISO 4759-1 (see 8.2, Table 6) with the normatively quoted GB/T 3103.1 to adapt to my country's technical conditions and improve high operability;

--- Replaced ISO 228-1 (see 10.1, 10.2, Table 6) with the normatively quoted GB/T 7307 to adapt to my country's technical regulations components to improve operability;

--- Replaced ISO 261 (see 10.2) with the normatively quoted GB/T 193 to adapt to my country's technical conditions and improve operability;

--- Changed the requirements for purchasers in "Procurement Information" (see Chapter 13, Chapter 13 of ISO 8434-6:2009) to adapt to my country technical conditions to improve operability;

--- Replaced ISO 9227 (see 11.3) with the normatively quoted GB/T 10125 to adapt to my country's technical conditions and improve operability active;

--- Replaced ISO 19879 (see 15.2.1~15.2.5, 15.2.7) with the normatively quoted GB/T 26143 to adapt to my country's technical standards technical conditions and improve operability;

--- Delete the dimension "S1" column, and divide "S2" into the dimensions of the opposite sides when using and not using the combined gasket sealing type (see Table 11, Table 12) to adapt to the technical conditions of our country;

---Change the tolerances of "L19", "L20", "L27", "L29" in Table 14 and "L21", "L22", "L27" and "L29" in Table 15 to "±2" to suit According to the technical conditions of our country;

--- Change "Reference" in "L36" and "L38" in Table 17 to "±0.5", and "±0.5" in "L37" and "L39" to "Reference" to Adapt to the technical conditions of our country.

The following editorial changes have also been made to this document.

--- Change the name of the standard to "Metal Pipe Fittings for Hydraulic Transmission Connection Part 4. 60° Cone";

--- Deleted the pressure unit "bar" in the chart;

--- Added "Figure 2 Schematic diagram of width across sides, diagonal dimensions, and side plane length";

--- Replaced ISO 6149-1 with the informative referenced GB/T 2878.1;

--- Replaced ISO 12151-6 with the informative referenced GB/T 9065.6;

--- Adjust the informative reference to ISO 1179-1 to the reference.

Introduction

GB/T 14034 aims to standardize the technical requirements of metal pipe joints for hydraulic transmission connections, and consists of four parts.

--- Part 1. 24 ° cone. The purpose is to identify general design requirements for 24° conical fittings utilizing ferrule or O-ring seals. requirements, basic dimensions, performance requirements and qualification tests.

--- Part 2. 37 ° flared. The purpose is to determine the 37°flared pipe connection suitable for metal pipes with an outer diameter of 6mm~50.8mm General design requirements, basic dimensions, performance requirements and qualification tests for head design.

--- Part 3. End face seals. The purpose is to determine the general design requirements, basic dimensions, performance requirements and and qualification tests.

--- Part 4. 60 ° cone. The purpose is to determine whether it is suitable for metal pipes with an outer diameter of 6mm~50mm or an inner diameter of 5mm~ General design requirements, basic dimensions, performance requirements and qualification tests for 60° tapered pipe joints for 51mm hoses.

1 Scope

This document specifies 60° tapered metal pipe joints with or without O-ring seals (applicable metal pipe outer diameter 6mm~50mm or General design requirements, basic size and performance requirements, and qualification test for hoses with an inner diameter of 5 mm to 51 mm).

The pipe joints specified in this document are suitable for connecting metal pipes or hose joints with oil ports in accordance with GB/T 2878.1 and ISO 1179-1 Transition connection (Refer to GB/T 9065.6 for relevant hose joint specifications).

Note 1. For new application design, relevant requirements are given in 9.6. Where elastomeric seals are permitted, national standards and inclusion of elastomeric seals are preferred pipe joint design.

Note 2. Use under conditions outside the specified pressure and temperature ranges, see 5.3.

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 193 Common thread diameter and pitch series (GB/T 193-2003, ISO 261:1998, MOD)

GB/T 2878.3 Hydraulic power connections with metric thread and O-ring seals on ports and stud ends - Part 3: Lightweight studs Terminal (L series) (GB/T 2878.3-2017, ISO 6149-3:2006, MOD)

GB/T 3103.1 Fastener tolerances Bolts, screws, studs and nuts (GB/T 3103.1-2002, ISO 4759-1:2000, IDT)

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 3639 cold-drawn or cold-rolled precision seamless steel tubes

GB/T 6031 Determination of hardness of vulcanized rubber or thermoplastic rubber (10IRHD~100IRHD) (GB/T 6031-2017, ISO 48:2010, IDT)

GB/T 7307 55°unsealed pipe thread (GB/T 7307-2001, eqv ISO 228-1:1994)

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 26143 Test method for hydraulic pipe joints (GB/T 26143-2010, ISO 19879:2010, IDT)

GB/T 41354 Dimensions and nominal pressure of seamless or welded flat-end precision steel pipes for hydraulic transmission (GB/T 41354-2022, ISO 10763:2020, MOD)

ISO 1179-2 Fluid transmission and general-purpose metal pipe connections, ports and studs with rubber or metal seals for ISO 228-1 threads (type E)

ISO 1179-3 Fluid transmission and general-purpose metal pipe connections, ports and studs with rubber or metal seals for ISO 228-1 threads