Rock bolt with Expansion shell

High loading capacity Dywidag Expansion shell, Rock bolt with Expansion shell

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.

Customized size and type is available as per samples or drawings.

We, Hebei Longquan Industry Co., Ltd. (formworkparts), are the manufacturer of formwork parts and scaffolding accessories from China. We mainly supply wing nuts, tie rod, water stop, hex. nuts, bar couplers, rapid clamps, frame formwork clamps, jack base, U head jack, prop nuts, prop sleeves, and other scaffolding fittings.

sales@formworkparts.com

Who we are:
Hebei Longquan Industry Co., Ltd. is a professional manufacturer of formwork parts and scaffolding accessories. We supply: formwork wing nuts, tie rod, water stop, scaffolding steel prop, hex nut, prop nut, prop sleeve, jack base, U-head, framework clamps, reinforcement tensioner, rapid clamps, tripod, steel cones, and many other types of formwork accessories and scaffolding fittings.
What we have:
Qualified R&D and sales team with over 10 year.
Casting workshop, Pressing workshop, Rolling workshop with total area of  over 40,000 sqm.
Professional advanced equipments, such as Electric Furnaces, Chemical Analysis Monitors, Core Making Machine, Heat Treatment Line, Hydraulic Universal Testing Machine, Chemical analysis Machine, Metallographic equipments, all of which assure the production capability and products quality.
What we offer:
We manufacture various products of iron casting, steel pressing, thread rolling in accordance with international quality standards in the field of formwork parts and scaffolding accessories.
Also, OEM service is available on clients’ request.
Why us:
With over 10 years of experience and professional R&D team, we know exactly what you need.
We have strict quality control system in the raw material selection, production line, and pre-packing, which ensures the reliable product quality as per customer’s request. What’s more, we have passed ISO9001:2008 QC certification issued by B.V.
Powerful manufacturing capability can ensure fast delivery to save your time.
With our thoughtful service, you can always get answered in no time.

Once again, thank you very much for your interest in our products.

Please contact us freely for any question or inquiry.

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