Self Drilling Anchor Bolt Systems

Anchor bolt r25n
Outside diameter(mm) 25
Internal diameter (mm ) 14
Ultimate load (kn) 200
Yield load (kn) 150
Weight (kg/m) 2.3
Thread type iso10208
Type of steel en10083-1
Left or right length(m) 1-6m, we can supply any length according to construction require 1-6m
Options of anti-corrosion hot-dipped galvanization

Usually anchor bar in bundles accessories in carton/pallet also depend on the customer's requirement

1.Self-drilling anchor bolt has two performance: drilling and grouting. It features a hollow bore for flushing, or simultaneous drilling and grouting.
2.The self-drilling anchor bolt is reliable, efficient and convenient, which makes high piling output possible.
3.Sinorock corrosion protection system:
A:hot-dip galvanizing corrosion protection. We can do it according to en iso1461.
B:duplex coat system: duplex coat=hot-dip galvanizing+epoxy powder coating.

R25, R32, R38, R51, T76.





Depending on the products.

Hot Rolled Threaded Rods Manufacturers Exporters in India

Product description
Underground construction double corrosion protection anchor bar based on the advanced molding technology, has the characteristics of high-strength, lightweight. Under the prerequisite of ensuring the bolt ultimate tensile strength, reasonable grouting aperture increases, solve the blocking problem. Makes grouting more smoother, fuller and more dense. While reducing the engineering cost and builders working strength, have achieved good results in every aspects.
Product nameUnderground construction double corrosion protection anchor bar
Length(m)2.0-4.0
Weight(kg/m)12.0-24.0
Outer(mm)38
Innner(mm)19
Ultimate load(kn)500
Yield load400
UsedMine, tunnel, slope, foundation pit
Application
Tunnelling ground engineering
• radial bolting • slope stabilization
• forepoling • micro injection pile
• face stabilization • temporary support anchor
• portal preparation • soil nailing
Our company
Chengdu luhui anchor material co. Ltd is establish in 2007, specialized in anchor engineering materials research and development production sales.
We have developed many years hollow grouting, automatic anchor pole and prestressed anchor rod, all products are strictly in iso9001:2008 of the company quality management system, innovation, quality and credit first is our eternal goal.Our products have been widely used in the domestic railway, highway, hydropower station and the foundation pit of high-rise buildings for many years, and has been unanimously recognized the owner, the engineering company, the construction company, the supervisor.

Packing & delivery
Packing details: bundle and accessories packed in case
Delivery details: 15-30 days

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Product description
Luhui r32 self drilling hollow anchor bolts is mainly used in underground engineering , like weak surrounding rock, fault fracture zone, highland stress large deformation and other complex geology. Especially in serious hole collapse and deep fault rock situation, ordinary anchor rod is incapable of action. Lhz anchor bolt set drilling, grouting, lengthen and anchoring multifunction all in one, in all kinds of bad surrounding rock engineering applications achieved ideal support effect.

SizeLength
(m)Weight(kg/m)Outer
(mm)Inner
(mm)Cross section(mm²)Ultimate load(kn)Yield load
(kn)
R32l2.0-4.05.4-10.83221.5304210160
R32n2.0-4.06.8-13.63218.5396280230
R32s2.0-4.08.2-16.43215.0488360280
Tunnelling ground engineering

• radial bolting • slope stabilization

• forepoling • micro injection pile

• face stabilization • temporary support anchor

• portal preparation • soil nailing

Technology process
1. Connect the alloy drill and anchor rod one end, on the other end, connect the drill sleeve and shank adapter , then connect the drilling rig or hand-held drill. Then start drilling, fill the cooling water while drilling.( if you want to lengthen the anchor rod, can connect the coupling, and then drilling)
2. Take down the drill, put the stop-grouting plug into the rod, and insert it to the hole, then ready to grout. Special circumstances like surrounding rock grouting tension is over or surrounding rock is too broken, can use anchor agent to seal the hole.
3. Connect quick grouting coupling and anchor rod end, connect other end of grouting machine.
4. Start grouting, when grouting full and reach design value then power off . Grouting pressure according to the design parameters and grouting machine performance determine , cement/sand reference values is 1:0 ~ 1:1, water/cement reference value is 0.45:1 ~ 0.5:1.
5. Install anchor plate and nuts, and tighten nuts.

(1)diameter: r25, r32, r38, r51, t76, t111
(2)max. Tensile load: 200-1900kn.
(3)yield load: 150-1600kn.
(4)standard length: 1-6m, we can supply any length according to construction require.
(5)productivity: 3000000m/month
We can supply all the accessories including anchor bits, coupling, nuts, plates, and centralizer.


(1)diameter: r25, r32, r38, r51, t76, t111