Ningbo Sardis Hardware Products Co., Ltd. is a major enterprise specializing in the production of self-tapping screws. With a facility covering over 10,000 square meters, our company is strategically located in Shangyu, Zhejiang, offering convenient transportation access.

Production Capacity and Equipment

Our monthly production capacity is approximately 500 tons. We are equipped with 80 cold heading machines, 80 threading machines, and 8 injection molding machines. Our main products include:

Umbrella Rib Expansion Screws

Self-Tapping Screws

Fiberboard Screws

Drywall Screws

Wood Screws

Plastic Expansion Tubes

We also offer custom screw and plastic expansion tube manufacturing according to customer drawings. Our products range in diameter from 3mm to 10mm and in length from 6mm to 200mm. With strong technical capabilities, we can produce screws and expansion tubes to various national standards, specializing in the manufacture of drywall screws and fiberboard screws. Currently, all our products are exported overseas, ensuring stable quality and performance. We have passed the ISO9001/2000 international quality system certification and are committed to creating a bright future together with our industry peers.

Global Market Reach

Our products are mainly exported to countries such as the United States, the United Kingdom, Poland, Russia, and Australia. We uphold the company philosophy of "Quality First, Integrity as Reputation," and are dedicated to providing excellent products and services to both new and existing customers.

Plastic Expansion Tube Products

We produce a wide range of plastic expansion tubes, including:

Plastic Expansion Screws

Plastic Wall Plugs

Plastic Washers

Nylon Expansion Products

Our products are made from high-quality raw materials such as PE, PA6, PP, and PA66. They feature excellent quality, high load capacity, wide applicability, accurate and quick installation, and improved work efficiency and installation quality. The products are cost-effective, with good toughness, strong pull strength, impact resistance, no cracking, high hardness, rust resistance, corrosion resistance, and aging resistance. They are suitable for a wide temperature range (-40°C to +80°C).

These plastic expansion tubes are widely used in various applications, including:

Concrete and Dense Natural Stone

Solid and Hollow Bricks

High-Porosity Bricks

Aerated Concrete

Gypsum Boards and Hardboard

Baseplates, Support Plates, Brackets, Railings, Windows, Doors, Curtain Walls, Staircases, and Exterior Wall Cladding

The standard color for plastic expansion tubes is gray, but we can also produce them in colors specified by customers. These tubes are commonly used in construction and decoration. Nylon products offer a longer service life and are priced accordingly.

We look forward to serving you with our high-quality products and excellent service.