Import Drywall Screws, Self Drilling Screws — Buy in Bulk from Supplier in China

Zhejiang Sansega Industrial Co., Ltd. supplies drywall screws that are also self‑drilling, manufactured from steel for industrial‑grade use. The product line includes four diameter options - 3.5 mm, 3.9 mm, 4.2 mm and 4.8 mm - each offered with a bugle‑head profile and selectable coarse or fine thread. These screws are designed to form their own pilot hole, eliminating the need for pre‑drilling in typical construction substrates. The supplier lists ISO certification as part of its quality assurance.

In the fastener market, steel self‑drilling screws commonly exhibit a tensile strength of around 800 MPa, and the lengths usually range from 20 mm to 100 mm depending on application; both values are typical for this class of hardware. A zinc plating finish is typical to improve corrosion resistance, although the exact coating is not specified by the supplier. The bugle head provides a flush finish that reduces surface irregularities on drywall panels. Such specifications align with standard practices for residential and commercial building projects.

These screws are widely used by builders, contractors and woodworking firms for drywall installation, framing and light‑metal fixing. Zhejiang Sansega offers flexible minimum order quantities and ships under FOB or CIF terms, but exact MOQ and lead time should be confirmed directly. Prospective importers are advised to request the supplier’s ISO certificate and any material test reports before finalising the purchase.

Zhejiang Sansega Industrial Co., Ltd. is located at No.1 Tonggang Road, Yuanton Sales & Marketing Centre, Room 302, Building 7, Shanghai 200335, China. The company operates as an imported‑tier supplier with a harbour trust tier, indicating it is verified for international trade. Its response rate is currently recorded as 0 percent, with no average response time reported, reflecting a need for direct communication. The firm’s primary focus is the manufacture and export of fasteners such as drywall and self‑drilling screws.

The listing confirms that the products are covered by ISO certification, though the specific certificate number is not disclosed. Zhejiang Sansega states that it can arrange shipping on FOB or CIF basis, providing flexibility for overseas buyers. No explicit minimum order quantity or lead‑time is published, so buyers should request these details during negotiation. The supplier’s profile does not include information on client references or revenue.