Import Blue Limestone — Buy in Bulk from Supplier in China

Blue limestone is a natural sedimentary stone quarried in Shandong Province, China, with a distinctive deep blue-grey hue and subtle veining. The material has a compressive strength of approximately 120 MPa, a bulk density of 2.65 g/cm³, and water absorption below 0.8%, based on standard test methods. Surface finishes include honed, flamed, and polished, each suited to different architectural applications. Dimensions are typically cut to order in slabs of 20mm to 30mm thickness or tiles up to 600mm x 1200mm, with tolerances within ±1.5mm.

This stone is classified as a calcareous limestone with a calcium carbonate content above 90%, making it durable under moderate weathering conditions. It is not recommended for high-acid environments or freeze-thaw zones without proper sealing. The surface texture is naturally slip-resistant, particularly when flamed or honed, and it resists staining better than lighter stones when sealed with a breathable impregnator. Typical industry standards for such stone include EN 1341 for physical properties and ASTM C503 for classification.

Blue limestone is commonly used in high-end residential flooring, commercial façades, and public landscaping projects across Europe and North America. Buyers include architects, interior designers, and civil contractors sourcing for projects requiring aesthetic consistency and structural integrity. Trade terms are typically FOB Qingdao Port, with minimum order quantities starting at one 20-foot container. Packaging is in wooden crates with foam padding, and custom cutting is available upon request.

Qingdao Winstone Construction Material Co., Ltd operates from Qingdao, Shandong, and is registered as an exporter of natural stone products. The company is listed as a harbor-tier supplier, indicating verified export activity and customs compliance. There is no public information on factory size, workforce, or years in operation. The listing confirms export capability but does not state certifications, client names, or production capacity.

The supplier's profile does not indicate in-house quarrying or processing facilities, suggesting it may act as a trading intermediary sourcing from regional quarries. Response metrics show no recorded communication activity, which may indicate limited buyer engagement or automated systems. Buyers should request documentation of origin, processing methods, and export history directly before placing orders.