ASTRA

ASTRA is the pioneer in introducing concrete spacers (also known as cover blocks) in India.

Over the years ASTRA has become benchmark of high quality in fibre reinforced concrete spacers / cover blocks.

With multiple tests conducted at reputed domestic and international test labs, ASTRA cover blocks have been approved and used in various prestigious projects.

ASTRA cover blocks are used in over 12 countries in Asia, Europe and Africa.

We are an ISO 9001:2015 Certified Company

Products

SINGLE COVER SPACERS

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MULTI COVER SPACERS

Multiple Cover Spacers / Cover Blocks are widely used for infrastructure and precasting works.

​Recommended for projects to control inventory 

HEAVY DUTY SPACERS

Heavy Duty Spacers / Cover Blocks are used in members with very high reinforcement load e.g. Heavy Rafts or Footings.

Single Cover Spacers / Cover Blocks are the most basic form of spacers in use.

Easy to install and identify.

WHEEL SPACERS

Wheel Spacers / Cover Blocks are most effective for vertical applications, such as in columns, piles and pile caps.​

Designed for vertical members with elements incorporated to give minimum contact with formwork.

CLIP-ON SPACERS

Spacers / Cover Blocks with clips are designed to save labour of tying a spacer. Snap-on clip design ensures quick and effortless fixing of spacers.

These cover blocks are also used for pre-casting members with complex / challenging mould designs.

DISTANCE BARS

Distance Bars / Kanda Cover Blocks are used to maintain parallel distance between large opposing formworks to obtain uniform thickness of the structural member.

SPECIAL SPACERS

Special Spacers / Cover Blocks are spacers developed by ASTRA customised to unique and challenging customer demands for projects like underground metro systems and power plant cooling towers.

REBAR END SPACERS

Rebar End Spacers are used to provide horizontal cover at the end of rebars.

Designed to provide cover between rebar tips and vertical border face for slabs.

REBAR END SAFETY CAP

Rebar End Safety Caps are used to protect site personnel from injury due to sharp exposed rebar tips.

Made from virgin material in bright orange colour for stark visibility, ASTRA rebar end safety caps are ideal for OSHA compliance at sites.