R25 Mine Tunnel Roof Support Self Drilling Rock Grouting Anchor Bolt

• After-sales Service: After Received 1year
• Warranty: After Received 1year
• Certification: CE, ISO 9001:2000, ISO 9001:2008
• Standard: GB, ASTM
• Surface Treatment: Galvanized
• Manufacturing Process: Forging
• Model NO.: R25
• Material: Carbon Steel
• Color: Black,Silver
• Capacity: Strong
• Tensile Strenghth: >180kN
• Size: Customized Sizes
• Diameter: 32mm
• Head Type: Round
• Delivery Time: 5-15days
• Yield: 400
• Sample: Avaliable
• Advantage: High-Quality Products
• Quality Control: 100%
• Tolerance: +0/-0.2mm
• Thickness: 2.75mm/3mm/3.5mm
• Transport Package: Plastic Bags+Cartons+Pallet
• Trademark: LB
• Origin: China
• HS Code: 7308400100
• Production Capacity: 10000 Tons/Month

Product Description

Product Description

Hollow grouting bolt is a new type of bolt, which is mainly used for strengthening rock layer, soil layer, tunnel and other projects. The rod body of hollow bolt is a hollow grouting pipe, which is used with nut, cushion plate, grouting plug and anchor head. The application principle is to inject slurry into the gap between the bolt and rock layer through the grouting pipe, so that the bolt and rock layer are closely combined to form a whole. So as to achieve the effect of rock reinforcement. According to the difference of anchor head, it can be divided into four categories: hollow bolt, combined bolt, expanded shell bolt and self-feeding bolt.

 

 

Product Parameters

 

Size	O.D(MM)	I.D(MM)	Ultimate Load(KN)	Yield Load(MM)	Weight(KG/M)
R25-14	25	14	200	150	2.3
R32L-22	32	22	210	160	2.8
R32N-21	32	21	280	230	2.9
R32N-18.5	32	18.5	280	230	3.4
R32S-17.5	32	17.5	360	280	3.5
R32S-15	32	15	360	280	4.1
R38N-21	38	21	500	400	4.8
R38N-19	38	19	500	400	5.5
Thread Direction		Left Hand

Product feature

(1) The hollow design uses the anchor rod to realize the function of the grouting pipe, avoiding the loss of mortar caused by the withdrawal of the grouting pipe in traditional construction.
(2) Strong bearing capacity, good tensile performance, easy installation, safe and reliable.
(3) It can effectively improve the bearing capacity and stability of rock formations. At the same time, it can reduce the disturbance and damage to the rock formation.
(4) Under the combined action of various accessories, the rod body can be well in the center position, and the mortar can wrap the bolt body completely, avoiding the danger of rust and achieving the purpose of long-term support.
(5) Easy installation, no need to process threads on site, you can directly install the pad and nut.

Packaging & Shipping

 

 

Company Profile

We are a manufacturer and exporter specializing in providing supporting materials for coal mines, construction projects and large concrete projects. We mainly produce anchor rods, trays, resin anchors, mesh, W steel belts, u-beams, anchors and other supporting materials for coal mine projects,and annual production of 30 million anchors, 3 million square meters of mesh, 21,000 anchors and more than 15,000 other accessories,and our supporting materials are exported to more than ten countries and regions, such as the United States, Europe, Russia and so on. It is one of the important manufacturers and exporters of anchoring materials in China.
We have passed a series of certificates such as Quality Management System Certification and Environmental Management System Certification.
Our enterprise vision is: casting industry famous brand, building industrial and mining leading enterprises.
we can supply high-quality products to meet the requirements of top-ranking customers in this field from different countries in the world.
We always strive to be the leader in the industry and create a more valuable one-stop service platform for coal mine support materials for our customers.

 

 

 

Customers & Exhibitions

 

 

FAQ

1. who are we?
We are based in Hebei, China, start from 2011,sell to Domestic Market(50.00%),Southeast Asia(10.00%),North America(9.00%),Africa(9.00%),Western Europe(5.00%),Mid East(5.00%),Eastern Europe(3.00%),South America(2.00%),Oceania(2.00%),South Asia(1.00%),Eastern Asia(1.00%),Southern Europe(1.00%),Central America(1.00%),Northern Europe(1.00%). There are total about 101-200 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Friction Bolt, Solid Deformed Bar, Resin Capsule, Welded Wire Mesh Sheet, Domed Plate

4. why should you buy from us not from other suppliers?
Handan Zhongfu Industrial and Mining Accessories Co., Ltd. was established in 2011, located in Hebei-Yongnian, China's fastener industry base. It has built its own modern large-scale industrial and mining supporting material production workshop, anchoring

5. what services can we provide?
Accepted Delivery Terms: FOB;
Accepted Payment Currency:USD;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English,Chinese