PLB HDPE Ducts

BSNL GR- GR/CDS-08/02 Nov, 2004

PLB HDPE Ducts

CONSTRUCTION : Permanently Lubricated HDPE Ducts (PLB HDPE Duct) are formed by co extrusion technique and are used for laying Optical Fiber Cables as underground ducting / conduits.

MATERIAL : The base raw material being used for the manufacturing Permanently Lubricated Ducts is High Density Poly Ethylene. The grade of raw material is ultra violet grade and is confirming to IS:7328-1992 & IS : 2523 or ISO : 1183 & ISO : 1133 and is designated as PEELA-50T-012 (CACT Approved) and inner layer permanently lubricated material DOW CORNING Grade-50MB002.

APPLICATIONS : Telecommunication, Computer Network, Automatic Signaling, Railways Information Network. Highways, Cable Service Providers, Broad Band networks, Electric cable installation etc.

PROPERTIES

S.No. Duct Size Outer Dia Ovality (Max) Wall Thickness Standard Length
1 32/26 32±0.3 1.3 3.0±0.2 500/1000 Mtrs.
2 40/33 40±0.4 1.4 3.5±0.2 500/1000 Mtrs.
3 50/42 50±0.5 1.4 4.0±0.3 500 Mtrs.
4 63/57 63±0.6 1.5 3.6±0.6 250 Mtrs.
5 75/65 75±0.7 1.6 4.3±0.7 200 Mtrs.
6 90/79 90±0.9 1.8 5.1±0.8 150 Mtrs.
7 110/96 110±1.0 2.2 6.3±1.0 6/12 Mtrs.
8 We are manufacturing up to 400 mm as per requirement of customer.

Last Update: Jan, 2011

S.No.  Test Description  Test Method  Test Requirement 
1 Dimension TEC/GR/FA/CDS-008/04/AUG-19, ISO:3126  As per Table 
(a) Outside diameter
(b) Ovality
(c) Wall thickness
2 Visual Inspection  TEC/GR/FA/CDS-008/04/AUG-19, ISO:3126  As per Specifications 
3 Density at 23° C GMS/CC  IS : 7328, IS : 2330 0.940-0.958
4 Melt Flow Index at 190° C  IS : 7328, ISO : 1133  0.2 to 1.1 
5 Tensile Strength at yield  IS : 14151-Part-1, ISO : 6259  Min 20N/mm2 
6 Elongation at Break  IS : 14151-Part-1, ISO : 6259  Min 500% 
7 Co-efficient of Friction  IS : 14151-Part-1, ISO : 6259  <0.06
8 Impact Strength  IS : 14151-Part-1, ISO : 6259  No Split or Crack 
9 Oxidation Induction time  IS : 14151-Part-1, ISO : 6259  >30 Minutes 
10 Environmental Stress & Crack Resistance  ASTMD-1693 No Split or Crack 
11 Heat Reversion  IS : 4984  Change < 3% 
12 Internal Hydrostatic Pressure creep repture  IS : 4984 & ISO : 1167  Passes

Last Update: Jan, 2011


All above mentioned test on PLB HDPE DUCS are conducted in-house as per TEC GR Specification No.

TEC GR No. TEC/GR/FA/CDS-008/04/AUG-19

(Supersedes No. TEC/GR/TX/CDS-008/03/MAR-11 with Amendment No. 1 dated 25/28.03.2013)

ASSOCIATED ACCESSORIES & TOOLS :

1 Plastic Coupler :    To join two duct lengths- air tight and water tight.
2 End Plug :    To seal duct ends prior to the installation of the cable.
3 Cable Sealing Plug :    To seal duct ends after insertion of the cable.
4 End Cap :    Made of hard rubber, fitted on both ends of duct coil after manufacturing.
5 Duct Cutter :    To cut duct cleanly and with square ends.
6 C Spanner :    To tighten plastic coupler.
Tijaria Polypipes Ltd.

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