Stable Quality in Sand Casting | Mass Production with Advanced Chemical & Quality Inspection Systems

Technology & Services

DISOCO (Song Cong Diesel Limited Company), based in Thai Nguyen Province, Vietnam, specializes in mass production of cast iron components using sand casting technology. We are highly trusted by Japanese and Western clients in the automotive, motorcycle, and industrial machinery sectors, thanks to our robust quality control system and in-house chemical analysis capabilities.
■ End-to-End Quality Assurance – From Pre-Casting to Final Inspection
We implement a three-stage quality control system to minimize defects such as burrs and casting flaws, meeting strict client specifications:
Pre-Casting Analysis & Sand Verification
- Chemical composition analysis using SPECTROMAXX
- Sand property testing (strength and moisture content) via SINTO sand testing equipment
In-Process Monitoring
- Mold cycle time: 30 seconds using SINTO’s automated molding line
- Molten metal flow and furnace temperature are tightly controlled to ensure casting consistency
Post-Casting Inspection
- Dimensional inspection via Mitutoyo 3D CMM
- Non-destructive testing: Magnetic particle & ultrasonic testing (Sonatest)
- Mechanical testing: Hardness, tensile strength, and surface roughness
■ Equipment & Testing Facilities (Visualized Quality Control)
Located in a 60,000m² factory, DISOCO is equipped with a wide array of testing devices:
- SPECTROMAXX: Chemical composition analysis
- SINTO sand tester: Physical property analysis of molding sand
- Mitutoyo 3D CMM: Dimensional inspection
- Sonatest: Ultrasonic flaw detection
- Hardness tester, tensile tester, surface roughness tester
- ARL3460 spectrometer
- Digital microscope
- Magnetic particle inspection system
All testing is conducted in compliance with international standards: ISO 9001, IATF 16949, ISO 14001, and ISO 45001.
■ Proven Trust from Japanese and Global Clients
DISOCO currently supplies over 10,000 tons/year of sand cast iron components to global clients including major names from Japan and the U.S. (e.g., Dorman, EQI). Our strength lies in our data-driven quality control and reliable chemical analysis, which have earned long-term trust.
Representative Product: Engine block (FC200, 5kg)
■ Why Clients Choose DISOCO
- Optimized quality control for sand casting: From material analysis to final inspection
- Over 1,000 tons/month capacity: Flexible support for mass production
- Strategic location in Northern Vietnam: Enables short lead time shipping to Japan and across Asia
- OEM-grade process control: Built to meet both Japanese and global manufacturing standards
With its robust in-house quality assurance system—including chemical analysis, sand testing, and non-destructive inspection, DISOCO is fully equipped to provide mass production of sand cast iron parts that meet international standards.
Exploring reliable sand casting solutions in Vietnam? Partner with DISOCO for quality, consistency, and trusted performance.