India's Trusted M60 Grade
Cover Block Manufacturer
Delivering fibre-reinforced, low-RCPT cover blocks for critical infrastructure across India and worldwide.
The RMS Quality Advantage
Engineering specifications that determine the life of a structure.
60+ MPA Strength
60+ MPA Strength
Withstands wet concrete weight + vibrator force. Competitors cut corners at <40 MPA. A cracked block displaces rebar and voids the cover.
Fibre Reinforced
Fibre Reinforced
PP fibres prevent cracking during handling, transport, installation. Without fibres, a rebar drop or worker stepping on the block causes failure.
Dimensional Accuracy
Dimensional Accuracy
±1mm tolerance. A 48mm block instead of 50mm shortens structural life by years in aggressive environments.
Low Permeability
Low Permeability
Porous blocks defeat their purpose as water passes through the block itself to reach rebar. RMS uses low water-cement ratio and graded aggregates.
Very Low RCPT
Very Low RCPT
<1000 coulombs (ASTM C1202). Mandatory for marine, coastal, industrial, and petrochemical structures. Export-critical specification.
IS 456:2000 Compliant
IS 456:2000 Compliant
Meets India's strict concrete code for cover requirements across all exposure conditions, ensuring full structural engineer approval.
Complete Product Range
From 20mm slab spacers to 100mm marine foundation blocks, a single source for every requirement.
RS 20-25 S
Slab Beam Spacer — LightLight duty, economical option for 20–25mm cover for slabs.
RS 20-25 M
Slab Beam Spacer — HeavyHeavy duty cover of 20–25mm for slabs. Extra mass resists displacement during pour.
RS 30-40
Beam & Column Spacer30–40mm cover with a center hole for wire tying. Particularly useful for beams and columns.
RM Series
4-in-1 Multi-Cover Spacer4-in-1 cover blocks with a center hole. One block serves multiple cover thicknesses — eliminates inventory confusion on site.
RFL Series
Footing Cover Block — LightLight duty covers for rafts, footings and piers. Trapezoidal wedge form sits stable on blinding concrete or loose soil.
RFH Series
Footing Cover Block — HeavyHeavy duty covers for rafts, footings and piers. Massive trapezoidal body resists significant concentrated loads during pour.
RW Series
Wire-Type SpacerCome with factory-inserted binding wires — makes tying fast and easy. Cylindrical concrete body for accurate, stable placement.
RR Series
Circular Cover BlockWide range of circular cover blocks. Disc design slips over rebar, distributing load evenly — ideal for piles, columns and vertical elements.
RD Series
Distance Bar (Cover Kanda)Distance bars (kanda covers) maintain uniform structural member thickness. Placed between opposing formwork faces.
Trusted by India's Most Demanding Projects
Partnering with top infrastructure and real estate developers.
Godrej Properties
Lusxtay Hotels
Megha Engineering & Infrastructure
Bhate & Raje Construction
C21 Empire
Urc Construction
Sak Superstructures
Isc Projects Pvt Ltd
Dee Vee Projects Ltd
Evercrest Projects
Verticle Realities
Gsd Construction
Vb Builders
Jkm Investments
United Projects
Abhinav Infra
Labham Group
Leeds Developers & BuildconGodrej PropertiesLusxtay HotelsMegha Engineering & InfrastructureBhate & Raje ConstructionC21 EmpireUrc ConstructionSak SuperstructuresIsc Projects Pvt LtdDee Vee Projects LtdEvercrest ProjectsVerticle RealitiesGsd ConstructionVb BuildersJkm InvestmentsUnited ProjectsAbhinav InfraLabham GroupLeeds Developers & BuildconFrequently Asked Questions
Technical and ordering information for buyers.
What is a concrete cover block?+
Concrete cover blocks (also called rebar spacers) are precision-manufactured blocks placed around steel reinforcement bars before concrete is poured. They maintain the specified distance between the rebar and the outer concrete surface, protecting the steel from moisture, chlorides, and corrosion.
What is the compressive strength of RMS cover blocks?+
RMS cover blocks exceed 60 MPa (M60 grade) compressive strength. This ensures the blocks withstand the pressure of concrete pours and vibration without cracking or displacing the reinforcement.
What does RCPT mean and what are RMS's values?+
RCPT (Rapid Chloride Permeability Test, ASTM C1202) measures resistance to chloride penetration. RMS cover blocks achieve Very Low RCPT values (under 1000 coulombs), making them essential for marine, coastal, and industrial structures.
Do you export cover blocks outside India?+
Yes. We actively export M60 grade cover blocks to the UAE, Saudi Arabia, Oman, Qatar, Kuwait, UK, Maldives, and Southeast Asia, complete with NABL test reports and export packaging.
Are RMS cover blocks IS 456 compliant?+
Yes. All RMS cover blocks are fully compliant with IS 456:2000 cover requirements for mild, moderate, severe, very severe, and extreme exposure conditions.
Can you manufacture custom sizes or grades?+
Yes. For large infrastructure projects and export orders, we manufacture customised cover blocks in specific sizes (e.g., non-standard mm) and higher or lower grades as per structural drawings.
What is the minimum order quantity?+
For domestic orders, MOQ depends on the transport logistics. For international export, we cater to 20ft and 40ft FCL (Full Container Load) requirements.
How do I place an order?+
You can request a quote instantly by messaging us on WhatsApp at +91 77719 19666, or by using the Contact/Export Enquiry forms on our website.