Import 3-19mm Toughened Glass — Buy in wholesale FOB from Supplier in China

Qingdao Globalstar Glass Co., Ltd. supplies fully toughened safety glass in thicknesses spanning 3 mm to 19 mm, manufactured through thermal tempering processes that induce high surface compression. The glass undergoes heating to approximately 620°C followed by rapid air quenching, creating a stress profile where surface compression typically exceeds 69 MPa and centre tension balances the forces. This processing yields mechanical strength four to five times greater than annealed float glass of equivalent thickness, with the characteristic cubic fragmentation pattern that defines safety glass performance. The 3-19 mm range accommodates applications from lightweight balustrade infill panels to heavy-duty structural flooring, with thicker options providing enhanced load-bearing capacity. The clear, polished finish preserves optical clarity for applications where aesthetic integration matters alongside structural performance.

The thermal tempering process creates permanent stress equilibrium within the glass section, meaning the strength enhancement cannot be separated from the material itself. Standard processing achieves edge compression values of 67 MPa or greater and surface compression of 69-150 MPa depending on thickness and furnace parameters. All fabrication, including edge work, hole drilling, notching, and surface treatments, must be completed before tempering, as post-processing would shatter the panel. The 3 mm minimum thickness represents the practical lower limit for reliable tempering without excessive breakage, while 19 mm approaches the upper threshold for conventional convection furnace processing. Colour and coating options beyond clear include tinted substrates, low-emissivity coatings, and reflective finishes, though these require confirmation of tempering compatibility with the supplier.

Applications span architectural glazing, automotive components, interior design elements, and furniture where human impact or thermal stress creates safety imperatives. The small, blunt fragmentation pattern upon breakage satisfies building code requirements for overhead glazing, door assemblies, and shower enclosures in most jurisdictions. Buyers should confirm compliance with specific national standards, whether EN 12150, ASTM C1048, or GB 15763.2, as furnace calibration and testing protocols vary between certification schemes. Trade terms from Qingdao port typically offer FOB or CIF options, with packaging in export-grade plywood crates and polyethylene interleaving to prevent surface scratching during ocean transit. The imported supplier tier and harbor trust designation suggest established export operations, though the zero platform response rate indicates direct communication channels may prove more reliable than inquiry-based messaging.

Qingdao Globalstar Glass Co., Ltd. maintains its registered address at No.2 Minjiang Road, Qingdao 266071, Shandong Province, China, a location in the country's northern coastal manufacturing belt with established port infrastructure for glass export. The supplier holds an imported tier designation alongside harbor trust status, suggesting some combination of foreign trade registration, export licence, or cross-border operational history, though specific verification details are not itemised in the profile. The zero response rate and zero average response hours indicate either inactive inquiry management through the platform channel or preferential use of direct communication methods outside the marketplace system. No on-site audit, trade assurance deposit, or third-party certification verification appears attached to this listing.

The company's product focus centres on value-added tempered glass rather than primary float glass manufacturing, positioning it within the processing and trading segment of the supply chain. The technical description references ISO and CE certification claims, though buyers should independently verify current certificate validity, scope, and issuing body accreditation, as platform listings may not distinguish between historical, pending, and active certifications. The mention of flexible minimum order quantities and comprehensive shipping options suggests operational experience with export documentation and logistics coordination. Direct verification of factory ownership, production capacity, and quality control staffing would strengthen procurement confidence beyond the limited platform signals available.