Granite

Granite is a coarse-grained igneous plutonic rock composed predominantly of quartz (20–40%) and feldspar, crystallized under extreme subterranean pressure. This mineral formation provides high density and resistance to atmospheric acid degradation, exceeding the mechanical thresholds of calcareous stones like wholesale marble or sedimentary travertine slabs.

• Compressive Strength: 180 to 240 MPa (ASTM C170 test protocol)
• Flexural Strength (Modulus of Rupture): 14 to 20 MPa (ASTM C99 / ASTM C880 for exterior cladding)
• Freeze-Thaw Resistance: No cracking or mass loss after 150 thermal cycles (ASTM C1026)
• Water Absorption: ≤0.20%(ASTM C97), preventing internal frost expansion and efflorescence
• Abrasive Wear Index: Ha ≥ 25(ASTM C241), suitable for high-density public transport hubs

We execute surface processing via automated flaming lines, hydraulic multi-hammer units, and polishing machines to achieve precise British Pendulum (PTV) slip-resistance ratings:

• Flamed (Thermal) Finish: Automated oxygen-propane torches fracture quartz crystals at 1200°C, producing a non-slip, low-relief texture (PTV 45+) for public plazas and wet outdoor zones.
• Bush-Hammered Finish: Multi-point pneumatic impact heads create uniform stippled indentations ranging from fine (point-fine) to coarse, ideal for curb steps, ramp access, and tactile paving.
• Honed Finish (400-Grit): Ultra-flat, reflection-free surface engineered for high-rise commercial corridors and ventilated interior lobbies.
• Polished Finish (90°+ Gloss): Diamond resin buffing that reveals natural mineral crystals for heavy-use commercial countertops and reception facades.
• Chiseled & Split-Face: Hand-split or hydraulic guillotine cleaved finishes for exterior retaining walls and rustic foundation bases.

Our fabrication standards adhere to strict civil and commercial building tolerances:

• Thickness Consistency: ±1mm on 20 mm / 30 mm exterior panels;±2mm on 50–100 mm heavy-load pavers.
• Orthogonal Squareness: Diagonals verified within ±0.5 mm variance per linear meter to prevent joint drift during installation.
• Mechanical Façade Detailing: Undercut anchor holes, continuous lateral kerf slots for aluminum sub-frame systems, and drainage drip grooves on window sills.

Key Construction Applications:

• Ventilated Rainscreen Facades: Calibrated 30 mm granite panels with pre-drilled kerf cuts engineered for high-altitude wind load resistance in commercial developments.
• Heavy-Duty Municipal Pavements: Solid granite pavers (dimensions: 600*400mm, 400*400mm, thickness: 50–100 mm) capable of supporting fire truck and service vehicle loads without cracking.
• Infrastructure Curbs & Landscaping: Chamfered road curbstones, radial curbs, water drainage channels, and solid bollards for streetscape revitalizations.
• High-Traffic Countertops & Worktops: 20 mm and 30 mm kitchen counters, public vanity tops, and laboratory benches with CNC sink cutouts and mitered apron drops.

Sourcing dimensional granite for multi-thousand square meter projects requires strict oversight of raw quarry consistency and packaging integrity. 

• Uniform Quarry Strata Extraction:
  To prevent color shifts across large project phases, we reserve entire quarry extraction benches to ensure all blocks originate from the exact same geological layer.
   
• Black Spot & Crystal Cluster Sorting:
  Raw slabs pass through automated inspection gates where technicians cull out pieces exhibiting irregular iron deposits, large dark crystal knots, or micro-fractures.
   
• Reinforced Heavy-Load Crate Packing:
  Paving stones and heavy cladding are secured in heat-treated, fumigated solid timber crates built with 25 mm thick structural skids (ISPM-15 compliant). Crate bases are reinforced with double steel bands to handle rough forklift transport on construction job sites.
   
• Maximized Port Payload Capacity:
  We optimize packing schemes based on destination port road limits (e.g., 21 to 27 metric tons per 20GP container), ensuring maximum square meter yield per shipment while avoiding overweight demurrage penalties.