Mechanical Expansion Shell Expansion Rock Anchor Bolts / Roofing Hook Bolts

Mechanical Expansion Shell Expansion Anchor Roct Bolt / Roof Bolt for Mining Industry

Description

Expansion shells are used for fixing single-sided shuttering or similar structures in rock, concrete or comparable load-bearing ground.

The expansion shells hold in any rock strata which is sufficiently competent to provide an adequate anchorage. They are designed to anchor in soft ground or hard rock. In good strata the anchorage exceeds the ultimate strength of the steel bolt. All expansion shells require a competent strata in the anchor zone. The suitability of the anchorage and the specific expansion shell to be used is best determined by physical load testing.

The expansion shells feature parallel contact with the hole wall with sharp serration’s on the outside leaves ensure positive holding power.

The expansion shell assembly is securely held by a spring ring, to save installation time and prevent loss of parts while handling. The spring ring is expandable with the outside leaves in working condition.

Specification

Our Service

Factory Introduction

Sunrise Foundry is a professional Metal Foundry, located in Ningbo. We have been producing Gray Iron,

Ductile Iron Castings and and any other precision castings for more than 25 years.

We are dedicated to meet different requirements of various customers across the world, products are mainly

involved Agricultural and Construction Machinery, Hydraulic, Mining industry, Municipal Products, some steel

and stainless steel castings for Pumps and Valves, Pipe Fittings, etc.

Please feel free to contact us if you have any requests.

Products We’ve Made

We divide our products into several categories. Gray Iron Casting, Ductile Iron Casting, Steel Casting, Stainless

Steel Casting for Scaffolding Accessories, Post Tension Anchorage, Automotive Part, Pump and Valve Body,

Pipe Fitting, Manhole Cover and Bollard, Ornamental Fence and Spear, Light Pole and Bench Casting, Railway Part.

Our Capability

We have updated our production line. Our production process include Resin Sand Molding Line, Shell Molding Line,

Wet Green Sand Casting and Lost Wax Investment Casting Production Process.

Quality Control

Quality Control is one of the most important process in production. We insist that 100% inspection before

shipment and ensure parts without any flaws when sending out.

We have complete quality inspection facilities including mechanical testing, chemical analysis, tensile strength,

hardness, spectrometer, ultrasonic testing, etc.

Certification