Import Borosilicate 5.0 Glass Tubes — Buy in wholesale FOB from Supplier in China

Borosilicate 5.0 glass tubes are precision-engineered tubular products made from a silica-based glass composition with approximately 5.0% boron trioxide, offering low thermal expansion and high chemical resistance. These tubes are available in outer diameters ranging from 4 mm to 300 mm, with wall thicknesses typically determined by application requirements. The material is transparent, allowing clear visual monitoring of contents during laboratory or industrial use, and exhibits resistance to thermal shock up to 160°C differential temperature changes.

The glass composition conforms to the standard borosilicate 5.0 classification, which is distinct from the more common borosilicate 3.3 grade. While borosilicate 3.3 is widely used in laboratory glassware, borosilicate 5.0 is often selected for applications requiring slightly higher thermal stability under repeated heating cycles, such as in chemical reactors or high-temperature fluid transfer systems. Surface finish is typically smooth and free of visible imperfections, with cut edges deburred to prevent chipping during handling.

These tubes are primarily sourced by pharmaceutical manufacturers, chemical processing facilities, and research laboratories in Europe, North America, and Southeast Asia. Buyers commonly use them for constructing custom distillation apparatus, gas sampling lines, and sealed reaction chambers. Packaging is done in sturdy cardboard crates with internal foam dividers to prevent breakage. Trade terms include FOB Shanghai and CIF destination ports, with minimum order quantities typically starting at 100 meters per size, though exact figures should be confirmed directly with the supplier.

China Four Stars New Material Co.,ltd. is based in the Pudong High-Tech Development Industrial Zone in Shanghai, with a focus on manufacturing precision glass tubing for industrial and laboratory applications. The company is registered as a manufacturer and exporter, with a harbor-tier trust score indicating verified business registration and export history. There is no public data on years in operation, workforce size, or client list, and response metrics are not available on the listing.

The supplier does not claim certifications such as ISO, SGS, or USP, nor does it specify production capacity or lead times. All claims about quality or compliance must be verified directly with the supplier. The listing does not indicate whether the company holds in-house testing equipment or conducts batch-level quality control, so buyers should request material certificates and test reports for each order.