Import Clinker — Buy in Bulk from Supplier in Viet Nam

Clinker from Cong Thanh Cement Joint Stock Company is a hydraulic cementitious material produced by sintering limestone and clay at temperatures exceeding 1450°C. The product is characterized by a bulk density of 1.4 to 1.6 tonnes per cubic meter and a particle size distribution where 85% passes a 90-micron sieve, based on standard industry practice. The supplier provides clinker in bulk form, unloaded from rail or vessel, with no added additives or fillers.

The clinker contains typical levels of tricalcium silicate (C3S) at 50-60%, dicalcium silicate (C2S) at 15-25%, tricalcium aluminate (C3A) at 5-10%, and tetracalcium aluminoferrite (C4AF) at 8-15%, aligning with standard Portland cement clinker composition. Alkali content is reported below 0.6% Na2O equivalent, reducing the risk of alkali-silica reaction in concrete. Free lime content is maintained below 2.0%, indicating proper kiln operation and thermal control.

This clinker is primarily purchased by cement plants in Southeast Asia and the Pacific for grinding into Portland cement. Buyers typically require consistent mineralogical profiles to maintain final product strength and setting time. Trade is conducted under FOB Haiphong or CIF terms, with bulk shipments in vessel loads of 20,000 to 50,000 tonnes. Packaging is not applicable; product is handled in dry bulk carriers or rail hopper cars.

Cong Thanh Cement Joint Stock Company operates a cement production facility in northern Viet Nam, with direct access to limestone quarries and coal supply routes. The company is registered as an exporter of industrial raw materials and has been verified as a harbor-based supplier with confirmed vessel loading capability. Its profile does not state annual production volume, workforce size, or client names, and no third-party certifications are referenced.

The company sources raw materials locally and operates rotary kilns consistent with modern cement manufacturing practices. It does not claim ISO certification, export history beyond Viet Nam, or direct relationships with international cement manufacturers. All information is limited to its role as a producer and exporter of clinker, with no mention of grinding plants, packaging facilities, or retail distribution.