GB/T 20025.3-2025 Active National standards

GB/T 20025.3-2025 Rubber and plastics hoses and hose assemblies for automotive air conditioning—Specification—Part 3:Refrigerant 1234yf

Publish Date: 2025-08-29 Implement Date: 2026-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 20025.3-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Rubber hoses, adhesive tapes, and rubber cloths

ICS Name: The car body and its accessories

Publish Date: 2025-08-29

Implement Date: 2026-03-01

Pages: 36 pages

Scope

This document specifies the requirements for rubber or thermoplastic hoses and hose assemblies used to circulate the liquid and gas R1234yf (tetrafluoroethylene) in automotive air conditioning systems. The design of the hoses and hose assemblies is capable of limiting refrigerant loss and system contamination. The operating temperature range is -40°C to +125°C.
Since the connection between the hoses and fittings is crucial in applications, the requirements stipulate that the fittings used in the test should be the same as those used in actual operation.

Development Information

Word Count: 45 Thousand words Pages: 36 pages

Referenced Standards

GB/T 9573-2013 Rubber and plastics hoses and hose assemblies—Methods of measurement of the dimensions of hoses and the lengths of hose assemblies ISO 1402 ISO 7326:2016 ISO 8330 ISO 23529 ISO/TR 11340