GB/T 24134-2009: Rubber and plastics hoses -- Assessment of ozone resistance under static conditions

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Scope

This Standard specifies five methods for determining the ozone resistance of the outer
covers of hoses.
ۛ method 1.for bore sizes up to and including 25 mm, carried out on the hose itself;
ۛ method 2.for bore sizes greater than 25 mm, carried out on a test piece from the
hose wall;
ۛ method 3.for bore sizes greater than 25 mm, carried out on a test piece from the
cover;
ۛ method 4.for all bore sizes, carried out on the hose itself;
ۛ method 5.for all bore sizes, carried out on hoses that are expandable, for example
textile-reinforced hoses.
NOTE. For hoses with built-in fittings from which it is not possible to take test pieces, the ozone
resistance may be assessed on slabs in accordance with GB/T 7762, using test sheets of the
appropriate polymeric compound vulcanized to the same degree.

Basic Data

Standard ID	GB/T 24134-2009 (GB/T24134-2009)
Description (Translated English)	Rubber and plastics hoses -- Assessment of ozone resistance under static conditions
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G42
Classification of International Standard	23.040.70
Word Count Estimation	8,865
Date of Issue	2009-06-15
Date of Implementation	2010-02-01
Quoted Standard	GB/T 2941; GB/T 7762-2003
Adopted Standard	ISO 7326-2006, IDT
Regulation (derived from)	National Standard Approval Announcement 2009 No.8 (Total No.148)
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 specifies the method for determination of five kinds of hose outer cover layer of ozone resistance.