Import Borosilicate Glass Casserole — Buy in Bulk from Supplier in China

The borosilicate glass casserole from SJZ Jinxuan Trading Co., Ltd. is manufactured using a high-silica borosilicate composition with a thermal expansion coefficient of approximately 3.3 x 10⁻⁶ /°C, enabling resistance to thermal shock from oven to freezer. Each piece is formed via mechanical pressing using electric melting furnaces, with wall thicknesses ranging from 3.5 mm to 5.2 mm depending on size, ensuring structural integrity under repeated temperature cycling. The base is flat and reinforced for even heat distribution, and the lids feature a tempered glass knob designed for safe handling at temperatures up to 150°C.

Standard material grade follows ISO 3585 or USP Class VI compliance for food contact, with no lead or cadmium detected in leaching tests. Typical capacities range from 0.8L to 4.5L, with diameters from 14 cm to 24 cm and heights from 8 cm to 12 cm. Surface finish is polished to reduce micro-scratches that can compromise durability, and edges are ground smooth to prevent chipping. These are not hand-blown items but precision-pressed, ensuring consistency in volume and wall uniformity across batches.

These casseroles are primarily sourced by commercial kitchens, catering services, and wholesale distributors in Europe and North America for use in baking, roasting, and food storage. Buyers commonly order in cartons of 6, 12, or 24 pieces, packed with foam inserts and corrugated dividers. Standard packaging is export-grade cardboard with printed labels. Lead times average 25 to 35 days after deposit, and FOB Tianjin or CIF port terms are typical. MOQ is usually 500 pieces per size, but this should be confirmed directly with the supplier.

SJZ Jinxuan Trading Co., Ltd. operates from Shijiazhuang, Hebei Province, China, and functions as a sourcing agent for manufacturing facilities that produce pressed borosilicate glassware. The supplier does not own the factory but coordinates production through a partner with an electric melting furnace, three mechanical arm pressing machines, and one automatic pressing line. The facility employs approximately 200 staff, including around 120 technicians and designers, indicating a focus on technical production rather than general assembly.

There is no public information confirming certifications such as FDA, LFGB, or BPA-free claims, nor any verified data on annual output volume beyond the stated 10 tons per day. The supplier's response rate is listed as 0.00%, and average response time is unrecorded, suggesting limited direct communication capacity. Buyers should treat this as a production coordinator, not a direct manufacturer, and verify all technical claims through sample testing before bulk orders.