How does the expansion shell anchor work?

When the bolt is tightened, the expansion shell expands inside the drilled hole, forcing the cone into the wedges to increase anchor force and hold the rock together.

Underground Mining Roof Rock Bolt with Expansion Shell Anchor Bolt

Name: Underground Mining Roof Rock Bolt with Expansion Shell Anchor Bolt
Brand: Ningbo Supreme Machinery Co., Ltd.
SKU: 2017497835

Zhejiang, ChinaNingbo Supreme Machinery Co., Ltd.

Negotiable

100 Pieces

Product profile

Customization

Available

After-sales Service

12 Months

Warranty

12 Months

Model NO.

SP9888

Certification

CE, RoHS, ISO 9001:2000, ISO 9001:2008

Standard

AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN

Surface Treatment

Sand Blast

Manufacturing Process

Casting+Forging+Stamping+CNC Machining+Welding

Material

Ductile Iron, Steel

Item Name

Expansion Shell Anchor Bolt

Application

Mining Industry

Size

as Per Drawing

Diameter

35-38

Finish

Oil Rusty

QC

100%

Transport Package

Wooden Case

Specification

Customized

Trademark

Origin

China

HS Code

8486909000

Production Capacity

80, 000 PCS Monthly

Key features

Multi-Standard Certification: Certified with CE, RoHS, ISO 9001:2000, ISO 9001:2008, AISI, ASME, BS, ANSI, JIS, GB, ASTM, DIN.

Durable Material Composition: Constructed from carbon steel for expansion shells and cast iron for rock anchor bolts.

Comprehensive Warranty: Provides 12 months of after-sales service and warranty coverage for the product.

Customizable Dimensions: Size is customized as per drawing, with diameters ranging from 35-38mm.

Versatile Manufacturing Process: Utilizes casting, forging, stamping, CNC machining, and welding for production.

Effective Rock Support: Expansion shell anchors tighten to hold rock together in mining and concrete applications.

Company profile

Ningbo Supreme Machinery Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 1990-02-01Nearest Port: Ningbo, Shanghai, TianjinAverage Response Time: ≤18hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, CFR, CIF

About Our Factory & Business Background

AddressYuan Feng Road, Dongjiao Industrial Area Fenghua, Ningbo China, 315500, Ningbo, Zhejiang, China

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month

Our Production Capability & Technical Expertise

Main ProductsIron Sand Casting Part, Ductile Iron Casting Part, Gray Iron Casting Part, Stainless Steel Casting Part, Precision Investment Casting Part, Carbon Steel Casting Part, Lost Wax Casting Part, Grey Iron Casting Part

Our Industry Experience & Global Business Record

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

Product Q&A

Q:What materials are used for the anchor bolts?

The expansion shell is made of carbon steel, while the rock anchor bolt is made of cast iron.

Q:What certifications does the product have?

The product is certified with CE, RoHS, ISO 9001:2000, ISO 9001:2008, and various standard certifications like AISI, ASME, BS, ANSI, JIS, GB, ASTM, and DIN.

Q:What is the warranty period?

We provide a 12-month warranty and after-sales service for this product.

Q:Can the size be customized?

Yes, the size is customized as per the customer's drawing, with diameters typically ranging from 35-38mm.

Q:What is the lead time for production?

The average lead time is one month, regardless of peak or off-season periods.