20 mm Metal
crushed stone
20 mm crushed stone — the single most-specified coarse aggregate in Indian construction. Default size for ready-mix concrete, residential and commercial RCC, road base, and mass concrete. We supply it from our own crusher at Chimakurthy.
About 20 mm Metal
IS 383:2016 Grade I coarse aggregate, nominal max size 20 mm. Standard for all ready-mix mixes in our M-grade range. Cubical particle shape, controlled gradation, low flakiness, and minimal deleterious matter — every batch leaves the crusher with these parameters checked.
Where 20 mm Metal fits — and where it doesn't
Specifying the right aggregate size and grade saves cement, simplifies placement, and avoids rework. Below is a quick guide based on IS / MoRT&H norms and what we see ordered from our Chimakurthy crusher across Prakasam district.
Use 20 mm Metal for
- Standard ready-mix concrete (M15 through M40)
- Residential and commercial RCC — slabs, beams, columns, footings
- Foundation concrete and mass pours
- Road sub-base and base course concrete
- Industrial floors
- Compound walls, retaining walls
- Bridge decks and culverts
Don't use 20 mm Metal for
- Sections thinner than ~50 mm (use 10 mm)
- Heavily congested reinforcement where flow is restricted
Common questions about 20 mm Metal
What is 20 mm aggregate used for in concrete?
How much 20 mm aggregate is in one cubic metre of concrete?
Do you deliver 20 mm aggregate to Ongole, Chirala, Kandukur?
20 mm Metal supplied across Ongole and Prakasam district
20 mm Metal is loaded ex-works at our Chimakurthy crusher for projects across Ongole and the wider Prakasam district. The distance shown against each town is the pickup distance from the crusher gate — tap any town for project-specific notes and round-trip times.