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Home > Product > Corrosion Protect System > Duplex Coating Rock Bolt
Duplex Coating Rock Bolt
Duplex coating rock bolt is applied to conditions which are influenced by underground water and sea water.
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Description
Introduction:
 

Duplex coating rock bolt adopts two corrosion-prevention measurements on the bolt surface. That are hot-dip galvanizing and epoxy coating, which can prevent corrosion very well.
 
Duplex coating rock bolt is applied to conditions which are influenced by underground water such as road, railway tunnel and subsea tunnel and which are corroded by seawater such as harbor, wharf and buildings on the sea affected.

Features:
 

1. Thick hot-dip galvanizing coating, dense combination, high anti-corrosion and good toughness.
2. Benefits of epoxy coating:
1) High adhesive force to the steel substrate.
2) Excellent physical properties and chemical stability.
3) Excellent toughness and wear resistance. 
4) A wide range of temperature adaptability.
5) Fine insulation and resisting anode dissolution.
3. Its anti-corrosion of the combination of two methods can keep more than 100 years.




Duplex Coating Anchor Bar  Duplex Coating Anchor Bolt
           Duplex Coating Anchor Bar                       Duplex Coating Rock Bolt                              
 
 
Duplex Coating Anchor Bar
Category Type Ultimate Tensile
Strength
Mpa
Yield Strength
Mpa
Hot-dip Galvanized
Zinc Coating Thickness
μm
Epoxy Layer
Thickness
μm
Thread Strandard Executive
Standard
Hot Rolled
Ribbed Rebar
D25 630 500 ≥70 ≥60 GB/T1499.2-2007 1. Hot dipped galvanizing
meets ISO1461
2. Epoxy coating: bending
properties meet ISO 1519,
impact properties meet
ASTMD2794, adhesion
meet ISO 2409:2007
Hollow Bar R25N 730 550 ≥70 ≥60 "ISO10208"
Hollow Bar R32N 700 580 ≥70 ≥60 "ISO10208"


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