What are the available material options?

We offer materials including Q235, 16Mn, and 20 Mnsi steel for our split set rock bolts.

Is the product available as a sample?

Yes, samples are available for testing and quality verification before bulk orders.

What is the delivery time?

Standard delivery is within 10 days. During peak season, the lead time is 1-3 months, while off-season is within 15 workdays.

Friction Bolt with Dome Plate Split Set Dog Ear Washer for Coal Mine Underground Support

Name: Friction Bolt with Dome Plate Split Set Dog Ear Washer for Coal Mine Underground Support
Brand: Hebei Langben Building Materials Co., Ltd
SKU: 1999848311

Hebei, ChinaHebei Langben Building Materials Co., Ltd

US$2.50

100-4,999 Pieces

US$2.16

5,000-9,999 Pieces

US$1.86

10,000+ Pieces

Product specifications

33

39

43

Sample price:US$1.50/piece.Request sample

Product profile

Customization

Available

After-sales Service

After Received 1year

Warranty

After Received 1year

Model NO.

Split Set Bolts

Type

Filter

Application

Building Construction

Certification

CE, ISO9001: 2000, SGS

Condition

New

Tolerance

+0/-0.2mm

Heat Treatment

Annealed

Processing Service

Bending, Welding, Decoiling, Punching, Cutting

Tensile Strength

>120kN

Yield Strength

>125kN

Report

SGS

Quality Control

100% Inspection

Delivery Time

Within 10 Days

Surface Treatment

Galvanize or Not

Packing

as Buyer Requirments

Retaining Ring Diameter

6.5mm

Drawing Force

80kN

Bearing Capacity

65kN

Transport Package

Standard Seaworthy Packing

Specification

33 40 42 43

Trademark

ODM

Origin

China

HS Code

7308400100

Production Capacity

10000 Tons/Month

Key features

Customized Dimensions: Diameter and Length are fully customizable to meet specific project requirements. ODM Service Available: Custom branding and manufacturing services are supported for bulk orders

Multiple Color Options: Available in Silver and Black finishes to suit different aesthetic or functional needs.

Comprehensive Certifications: Product meets CE standards and undergoes SGS quality inspection for reliability.

High Tensile Strength: Features tensile strength greater than 120kN and yield strength over 125kN for superior performance.

Full-Length Anchorage: Split set design provides active reinforcement and prevents rock sliding along the entire length.

High-Anchorage Performance: Specially designed for immediate ground support; generates high friction grip instantly upon installation in various rock strata.

Superior Durability: Manufactured from premium high-strength structural steel with hot-dip galvanized coating, ensuring excellent anti-corrosion properties in high-humidity underground environments.

Precision Manufacturing: Automated welding processes for the bearing plate ensure maximum structural integrity and load-bearing capacity under intense rock pressure.

Wide Compatibility: Available in multiple diameters (e.g., 33mm, 42mm, 47mm) and lengths; fully compatible with standard pneumatic rock drills and installation equipment.

Rigorous Quality Control: 100% inspection of welding points and steel tensile strength; fully compliant with international mine safety and quality standards.

Company profile

Importers and ExportersFast DeliveryCustomization from SamplesODM Services

Hebei Langben Building Materials Co., Ltd

Hebei, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service AvailableNearest Port: tianjingangAverage Response Time: ≤4.55hTerms of Payment: LC, T/T, PayPal

About Our Factory & Business Background

AddressStreet and Jianshe Road in Linmingguan Town, Yongnian District, Handan, Hebei, China

Plant Area400 square meters

Number of Employees14

Registered Capital3,000,000 RMB

Average Lead TimePeak Season Lead Time: 1-3 months Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsRock Bolt, Resin Capsule, FRP Anchors, U-Shaped Steel Support, Welded Wire Mesh, Cable Bolt Strand, Drill Bit, Drill Pipe, Split Set Anchor Bolt, Hollow Grout Rock Bolt

Our Industry Experience & Global Business Record

Year of Establishment2023-10-17

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Product Q&A

Q:Who are we?

We are based in Hebei, China, started in 2011, with about 200 staff. We sell to Domestic Market (50%), Southeast Asia (30%), Africa (10%), Mid East (5%), and Eastern Asia (5%).

Q:How can you guarantee quality?

We always produce a pre-production sample before mass production and conduct a final inspection before shipment.

Q:What can you buy from us?

Our Product Range Includes: Primary Support Systems: Resin Capsules, Split Set Bolts (Friction Bolts), and Fiberglass (GFRP) Rock Bolts for superior underground reinforcement. Geotechnical Solutions: High-quality Rock Self-drilling Anchors and standard Anchor Rods. Infrastructure & Bridge Construction: Specialized Prestressing Thread Steel Bars and high-strength Domed Nuts. Surface Support: Durable Welded Wire Mesh Pieces for rockfall protection and site safety.

Q:Why should you buy from us not from other suppliers?

Hebei Jiufu Industrial and Mining Parts Co., Ltd. was established in 2012, with an annual export volume of 12,000 tons and annual sales of 50 million US dollars. It has 14,000 square meters of standardized industrial plants and 2 large raw material warehouses.

Q:What services can you provide?

Accepted Delivery Terms: FOB, CIF, EXW, Express Delivery. Accepted Payment Currency: USD. Accepted Payment Type: T/T, Credit Card, Western Union, Cash. Language Spoken: English, Chinese.