YD/T 1460.3-2006 English PDF (YDT1460.3-2006)

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YD/T 1460.3-2006: Telecommunication microduct optical fibre cables and fibre units for installation by blowing. Part 3: Microducts, microduct bundles and microduct accessories
YD/T 1460.3-2006
COMMUNICATION INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 33.180.10
M 33
Telecommunication microduct optical fiber cables and fiber
units for installation by blowing - Part 3: Microducts,
microduct bundles and microduct accessories
ISSUED ON: DECEMBER 11, 2006
IMPLEMENTED ON: JANUARY 01, 2007
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Definitions ... 5 
4 Product model and marking ... 5 
5 Requirements ... 7 
6 Test methods ... 11 
7 Inspection rules ... 18 
8 Packaging, transportation, storage ... 20 
Appendix A (Normative) Basic technical requirements for microduct accessories ... 21 
Appendix B (Informative) Structure diagram of microduct and microduct bundle ... 23 
References ... 24 
Telecommunication microduct optical fiber cables and fiber
units for installation by blowing - Part 3: Microducts,
microduct bundles and microduct accessories
1 Scope
This Part of YD/T 1460 specifies the definition, product model and marking,
requirements, test methods, inspection rules, packaging, transportation, storage of
microducts and microduct bundles, as well as the basic requirements for microduct
accessories.
This Part applies to microducts, microduct bundles, microduct accessories for
installation in outdoor or indoor, by blowing.
2 Normative references
The provisions in following documents become the provisions of this Part through
reference in this Part of YD/T 1460. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Part; however,
parties who reach an agreement based on this Part are encouraged to study if the latest
versions of these documents are applicable. For undated references, the latest edition of
the referenced document applies.
GB/T 2828-2003 Sampling procedures and tables for lot-by-lot inspection by
attributes (Apply to inspection of successive lots or batches) (ISO 2859-1:1999, IDT)
GB/T 6671-2001 Thermoplastics pipes - Determination of longitudinal reversion
(eqv ISO 2505: 1994)
GB 6995.2-1986 Markings for electric cables and wires - Part 2: Standard colours
GB/T 7424.2-2002 Optical fiber cable generic specification - Part 2: Basic optical
cable test procedures (IEC 60794-1-2:1999, Optical fiber cables - Part 1-2: Generic
specification - Basic optical cable test procedures, MOD)
GB/T 8804.1-2003 Thermoplastic pipes - Determination of tensile properties - Part
1: General test method (ISO 6259-1:1997, IDT)
GB/T 8806-1988 Plastics piping systems - Plastics components - Determination of
dimensions
GB/T 9647-2003 Thermoplastics pipes - Determination of ring stiffness (ISO
9969:1994, IDT)
GB/T 14152-2001 Thermoplastic pipes - Determination of resistance to external
blows - Round-The-Clock method (eqv ISO 3127:1994)
GB/T 15820-1995 Test of resistance to pull out of joints between polyethylene (PE)
pressure pipes and fittings (eqv ISO 3501: 1976)
YD/T 837.4-1996 Test method of copper-core, polyolefin insulated, composite
aluminum-plastic sheathed cables for urban local communications - Part 4: Test
method of environmental performances
YD/T 1460.1-2006 Telecommunication microduct optical fiber cables and fiber
units for installation by blowing - Part 1: General
3 Definitions
The following definitions apply to this Part:
3.1
Microduct bundles
See the definition in Article 3.3 of YD/T 1460.1-2006.
3.2
Cable of microduct
See the definition in Article 3.4 of YD/T 1460.1-2006. Microduct cables are also
called bundled ducts.
4 Product model and marking
4.1 Product classification
According to the different combinations of microducts, they can usually be divided into
three types:
(1) Microducts;
(2) Microduct bundles;
(3) Microduct cable.
quantity are connected by an "x" sign.
4.4 Model and marking
4.4.1 Models
Product model consists of type and specification. Different parts are separated by spaces.
4.4.2 Marking
The microduct product marking shall be identified, when processing and ordering,
which consists of the model of the microduct and the serial number of this Part.
Example 1: For the microduct for installation by blowing, which is made of high-
density polyethylene, has an outer diameter of 7.0 mm and an inner diameter of 5.5 mm,
whose duct wall structure is ribbed, THEN, the product marking shall be expressed as:
SYHL 7/5.5 YD/T 1460.3-2006
Example 2: For the microduct bundle for installation by blowing, whose microduct
material is a silicone-plastic composite material, which has a microduct outer diameter
of 7.0 mm and an inner diameter of 5.5 mm, which has a quantity of microducts of 5,
whose duct wall structure is a solid wall, THEN, the microduct bundle product marking
shall be expressed as:
SYHG 7x5 YD/T 1460.3-2006
Example 3: For the microduct cable with metal moisture barrier for installation by
blowing, whose inner microduct material is high-density polyethylene, outer diameter
of the microduct is 7.0 mm and the inner diameter is 5.5 mm, the duct wall structure is
ribbed, which has a quantity of microducts of 19, THEN, the microduct product
marking shall be expressed as:
LYHLM 7x19 YD/T 1460.3-2006
5 Requirements
5.1 General requirements
The provisions of 5.4 and 5.5 of YD/T 1460.1-2006 apply to this Part. When in use,
microducts, microduct bundles or microduct cables must be used, in combination with
corresponding accessories. The requirements of microduct accessories are as shown in
Appendix A.
5.2 Structure
5.2.1 Structure example
After testing in accordance with Article 6.4.6, there shall be no visible damage, to the
outer surface and inner wall of the microduct.
5.3.2.7 Bending
Microducts shall meet the test of 6.4.7. After the test, there shall be no visible damage.
5.3.2.8 Longitudinal retraction
Microducts or microduct bundles shall satisfy the test in Article 6.4.8. After the test, the
longitudinal retraction of the microducts shall be not more than 3%.
5.3.2.9 Ring stiffness
The ring stiffness of the microducts shall not be less than 6.3 kN/m2.
5.3.2.10 Connection force with pipe joint
The connection force between the pipe and the joint shall not be less than 350 N; the
connection shall not be loose or obviously deformed.
5.3.3 Environmental performance
5.3.3.1 Air pressure
(a) In the exit-factory inspection, it is required that the microduct or microduct
bundle shall be able to withstand the air pressure of 1.2 MPa for 30 min, without
air leakage, under the normal temperature of 20 °C.
(b) During the type test, it is required that after 240 h at a high temperature of 100 °C,
the microduct or microduct bundle shall be able to withstand the air pressure of
1.2 MPa, without breaking.
5.3.3.2 Water pressure tightness
The microducts, which are connected by microduct joints, shall be airtight as a whole
AND meet the test requirements of 6.5.3.
5.3.3.3 Freezing
There are no freezing requirements for microducts.
Put the microduct at -15 °C for 10 h, the tube shall have no cracks or breaks, meanwhile
there shall be no obvious cracks and defects in appearance.
5.3.3.4 Electric spark test
This property is only required for those containing metal components.
the end of the microduct, for the integrity and structure of the microduct; the inner wall
can be view...