Plastic Expansion Pipe Tube

Plastic Expansion Pipe Tube

The Duojia “Plastic Expansion Pipe Tube,” also known as an Anchor Wall Plug, is a fundamental light-duty fastener designed to provide a secure and reliable anchor point for screws in various base materials. Manufactured from durable plastics like high-density polyethylene or polypropylene, these plugs are essential for both professional contractors and DIY enthusiasts. They are ideal for securely mounting items such as pictures, shelves, and light fixtures to walls made of drywall, concrete, brick, and other masonry.

Clarification on Product Type and Design

This fastener is a simple yet effective friction-based anchor. It is a small, hollow plastic tube, often featuring external ribs or “fins” and slits along its body. The fins prevent the plug from rotating in the drilled hole during screw installation, while the slits allow the body to expand.

Important Clarification on Product Parameters:
It is critical to note that the product parameters listed on the source page contain significant inaccuracies that are inconsistent with the nature of a plastic wall anchor.

  • Grade: The listed strength grades (e.g., 4.8, 8.8, 10.9) are international standards for the mechanical properties of steel bolts and screws. These grades are not applicable to plastic anchors. The holding strength of a plastic plug is determined by its design, the quality of the plastic, and the integrity of the base material, not by a steel grade.
  • Application: The application listed as “Heavy Industry” is incorrect. As confirmed by the product’s own introductory text (“hanging pictures, shelves, or light fixtures”), these plugs are intended for light to medium-duty applications. They are not suitable for heavy industrial loads or structural connections.
  • Size: The general “Size” range of M6-M20 is misleading. This range refers to the nominal screw size the plug is designed to accept, not a metric thread on the plug itself. The dimensional table on the page provides more accurate and specific sizing information.

Product Mechanism and Installation

The anchor functions on the principle of expansion and friction. When a screw is driven into the hollow center of the plug, its threads engage the inner walls and force the split sections of the plug to expand outwards. This expansion presses the plug’s ribbed body firmly against the inside of the drilled hole, creating a strong frictional grip that resists pull-out forces.

  • Installation Process:
    1. Drill the Hole: Using a drill bit that matches the nominal diameter of the anchor plug, drill a hole into the wall. The depth of the hole should be slightly longer than the plug itself.
    2. Insert the Plug: Push the plastic expansion tube into the hole until it is fully seated and flush with the wall surface.
    3. Fasten the Object: Place your fixture (e.g., a bracket) over the plug, align the mounting hole, and drive the correct size screw into the center of the plug.
    4. Tighten Securely: As you tighten the screw, the plug will expand and grip the wall. Be sure to choose the correct anchor size for the weight of the object and avoid over-tightening.

Product Parameters

Parameter ItemSpecification Description
Product NameAnchor Wall Plug Plastic Expansion Pipe Tube
Brand NameDuojia
Place of OriginHebei, China
MaterialPlastic (e.g., High-Density Polyethylene, Polypropylene)
Surface TreatmentPlain / Original (Natural plastic finish)
Available SizesM6-M20 (Refers to compatible screw size; see table below for specifics)
GradeNot Applicable (Steel grades do not apply to plastic anchors)
Measurement SystemMetric
ApplicationLight to Medium-Duty Fastening (DIY, Home, Commercial)
CertificationsISO9001, ISO14001, ISO45001, SGS
Packaging OptionsSmall Pack+Carton+Pallet; Bag/Box with Pallet

Dimensional and Sizing Information

The following table from the product page provides specific sizing for the anchor plugs. The “Nominal Diameter” corresponds to the required drill bit size.

Nominal Diameter (mm)Length (L) – Type A (mm)Length (L) – Type B (mm)Recommended Screw Diameter (mm)
631363.5, 4
848424, 4.5
1059465, 5.5
1260645.5, 6

Key Features

  • Versatile Use: Effective in a wide range of base materials, including drywall, concrete, and brick.
  • Expansion Grip: Slits and fins allow the plug to expand and create a firm, reliable hold.
  • Corrosion-Proof: Being made of plastic, the anchor will not rust or corrode, ensuring long-term durability.
  • Economical Fastening: An inexpensive and effective solution for a multitude of light-duty hanging tasks.
  • Easy to Install: Requires only basic tools (a drill and a screwdriver), making it perfect for professionals and DIY users alike.

Common Applications

  • Hanging pictures, mirrors, and clocks.
  • Installing shelving, small cabinets, and brackets.
  • Mounting light fixtures, smoke detectors, and curtain rods.
  • Securing bathroom and kitchen accessories.