Double Bowl Semi Recessed Basin

Double bowl semi-recessed basins feature a forward-projecting apron that mounts in front of standard 510 mm to 550 mm vanity counters, accommodating two independent washing stations without requiring an oversized footprint. Unlike undermounted sinks, the exposed ceramic apron protects cabinet edges from water damage. Unlike vessel sinks, the lower deck height improves accessibility and simplifies counter maintenance. Cast from high-purity vitreous china and fired at 1280°C, these units withstand high-traffic commercial and multi-family residential deployment.

High-Temperature Vitrification: Fired in a 120-meter shuttle kiln at 1280°C for 24 hours to eliminate micro-porosity and prevent moisture absorption under thermal cycling.

Precision Surface Flatness: CNC grinding levels the countertop mounting flange to a flatness tolerance within $0.8\text{ mm}$, preventing rocking, uneven silicone joints, and water pooling.

Chemical Resistance: Micro-crystalline glaze exhibits zero degradation when exposed to 10% hydrochloric acid and 5% sodium hydroxide per ISO 27722 standards.

Thermal Shock Durability: Withstands water temperature transitions from 0°C to 90°C without crazing or surface micro-fracturing.

Countertop Cutout: Fabricate solid-surface counters using factory-supplied DXF/DWG templates. Maintain a cutout tolerance of $+1.0\text{ mm} / -0.0\text{ mm}$ relative to the inner basin perimeter.

Cabinet Clearance: Verify interior cabinet width is at least 1160 mm clear of internal plumbing lines to accommodate twin drain assemblies.

Mounting & Sealing: Apply neutral-cure structural silicone (ASTM C920 Type S) along the contact flange. Secure mechanical anchors underneath using threaded inserts. Torque mounting bolts to a maximum of 4.5 Nm.

Plumbing Rough-In: Center hot and cold supply lines at 200 mm intervals from the centerline. Position waste drain rough-ins at 600 mm center-to-center for twin P-trap alignment.

Multi-Family Residential: High-rise apartment bathrooms requiring dual-user efficiency and space-saving vanity footprints.

Hospitality Guest Rooms: Mid-to-upscale hotel suites requiring scratch-resistant surfaces that withstand commercial cleaning chemicals.

Commercial Office Restrooms: Shared executive washrooms where an integrated apron prevents water ingress into custom millwork.

Healthcare Facilities: Outpatient clinics requiring non-porous vitreous china surfaces compliant with infection control protocols.

Dimensional Adjustments: Mold modifications available for apron heights from 60 mm to 90 mm, altered bowl depths, and overall lengths from 1000 mm to 1400 mm.

Overflow Configurations: Options for rear overflow, front overflow, or un-overflew casting to meet regional plumbing codes.

Glaze Finishes: Standard high-gloss white, matte white, matte black, and custom Pantone-matched architectural color glazes.

Brand Integration: Laser-etched under-glaze ceramic logos fired at 1180°C and private-label barcodes (UPC/EAN) on corrugated cartons.

Raw Material Inspection: XRF spectrometry testing verifies iron oxide and quartz purity ratios in raw slip compounds prior to casting.

Slip-Cast Monitoring: Slip density controlled at $1.78\text{ g/cm}^3$ with viscosity monitored via efflux cup testing.

Greenware Inspection: Laser profilometry checks raw casting geometry before kiln loading to identify warping or sagging.

Post-Firing Testing:
Sound Resonance: Automated impact hammer acoustic testing for internal micro-cracks.

Flatness Inspection: 0.05 mm feeler gauge inspection along the entire mounting rim.

Leak Detection: Hydrostatic pressure testing of overflow channels at 0.3 MPa.

Carton Specification: 5-layer export corrugated master cartons with bursting strength exceeding $1800\text{ kPa}$.

Internal Protection: Form-fitted EPS corner buffers (minimum 25 mm thickness) absorbing up to 60 G impact forces.

Palletization: ISPM 15 compliant heat-treated wooden pallets. Configuration: 8 units per pallet (~330 kg gross weight), double-stacked in 40ft High Cube containers (320 to 360 units per FCL).

Transit Testing: Packaging certified to ISTA Procedure 3A drop and vibration standards.

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