Industrial bentonite grades and specifications

Direct mine-to-market Sodium Bentonite processed in Kutch, Gujarat. Supplying API drilling, metal casting foundry, civil piling, electrical grounding, and raw mineral lumps to 25+ global markets.

Premium Grade

Civil excavation & pilingSoil sealing & pond liners

Bentonite Powder

Industrial-grade micronized sodium bentonite powder

Montmorillonite

≥ 85%

Mesh Range

200 – 325

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Premium Grade

Oil & gas exploration drillingHorizontal directional drilling (HDD)

Drilling Grade Bentonite

API Spec 13A compliant drilling fluid clay

Standard

API 13A

Barrel Yield

≥ 90 bbl/ton

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Premium Grade

Automotive engine block castingDuctile & grey iron foundries

Foundry Grade Bentonite

High green compression strength binder for green sand casting

Green Comp. Strength

1100 – 1400 g/cm²

Dry Comp. Strength

5000 – 7500 g/cm²

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Premium Grade

Metro rail underground stationsDiaphragm wall excavation

Piling Grade Bentonite

Hydrostatic trench and diaphragm wall stabilizer

Marsh Viscosity

34 – 48 sec

Fluid Loss

≤ 14 ml

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Premium Grade

High voltage electrical substationsSolar & wind power transmission towers

Earthing Grade Bentonite

Low-resistivity mineral grounding backfill compound

Soil Resistivity

< 0.85 Ω·mLow

Free Swell Volume

≥ 28 ml / 2g

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Premium Grade

Overseas mineral processing plantsCat litter manufacturing plants

Bentonite Lumps

Raw unprocessed high-montmorillonite mineral ore

Physical Form

Raw Mineral Lumps

Size Distribution

20 – 80 mm

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Comparison Index

Bentonite Grade Comparison

Grade	Key Specification	Primary Use	Applications	Action
Bentonite Powder	≥ 85%(Montmorillonite)	Civil excavation & piling	Civil excavation & piling, Soil sealing & pond liners	Specs →
Drilling Grade Bentonite	API 13A(Standard)	Oil & gas exploration drilling	Oil & gas exploration drilling, Horizontal directional drilling (HDD)	Specs →
Foundry Grade Bentonite	1100 – 1400 g/cm²(Green Comp. Strength)	Automotive engine block casting	Automotive engine block casting, Ductile & grey iron foundries	Specs →
Piling Grade Bentonite	34 – 48 sec(Marsh Viscosity)	Metro rail underground stations	Metro rail underground stations, Diaphragm wall excavation	Specs →
Earthing Grade Bentonite	< 0.85 Ω·m(Soil Resistivity)	High voltage electrical substations	High voltage electrical substations, Solar & wind power transmission towers	Specs →
Bentonite Lumps	Raw Mineral Lumps(Physical Form)	Overseas mineral processing plants	Overseas mineral processing plants, Cat litter manufacturing plants	Specs →

Export packaging and container payload options

All shipments are stuffed in clean 20ft dry containers at Mundra or Kandla port under independent surveyor supervision. Moisture desiccants and container inner liners are supplied as standard.

Palletized or loose

25 kg moisture-barrier bags

Multi-ply laminated craft or woven polypropylene bags with inner polyethylene moisture liner. Designed for manual handling, precise batch mixing, and palletized warehouse distribution.

Container capacity25 MT / 1,000 bags per 20ft FCL

Heat-treated wooden pallets
Stretch-wrap and edge-board protected
Zero moisture ingress during sea transit

Standard export format

50 kg heavy-duty woven bags

Double-stitched high-tensile woven PP bags with LDPE liner. Standard export format for oil drilling sites, bored piling projects, and bulk foundry consumers.

Container capacity26 MT / 520 bags per 20ft FCL

Tear and puncture resistant
UV-stabilized fabric for outdoor storage
Custom buyer labeling and stencil marks

Crane and forklift logistics

1.4 MT FIBC jumbo bags

Heavy-duty bulk FIBC bags with 4 reinforced cross-corner lifting loops, top filling duffle, and bottom discharge chute for automated hoppers.

Container capacity25.2 MT / 18 bags per 20ft FCL

Safety factor SF 5:1 certified
Top duffle and bottom discharge spout
Rapid crane loading at port terminal

Note: All grades sourced from Kutch, Gujarat, India. Typical values subject to mineralogical variance. Laboratory test reports and COAs available on request.

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