Drop In Anchor ZP

Product Introduction and Designation

• Standard Designation: Drop-In Anchor (ZP).

• Alternative Designations: Internal Expansion Anchor, Internal Expansion Bolt, Pre-embedded Internal Expansion Anchor, Galvanized Internal Expansion Anchor.

• Product Definition: A post-installed internal expansion anchor specifically engineered for concrete. Installation requires pre-drilling a hole and inserting the anchor sleeve. Striking the matching core rod causes its wedge-shaped base to expand the sleeve, generating powerful expansion friction and mechanical interlocking within the hole wall for high-load-bearing fixation. Its “Drop-In” feature suits applications requiring flush-mounted bolts or connections below the surface.

Drop In Anchor ZP Key Features

• Zinc Plated (ZP): Provides basic rust protection and a bright silver finish, enhancing corrosion resistance,

  suitable for indoor or slightly damp environments.

• Internal Expansion Design: The cylindrical anchor body features internal threads and a tapered expansion

  groove at the bottom, allowing for expansion and fixation using a specialized installation tool, providing

  high holding power and pull-out resistance.

• Material and Strength: Commonly made of carbon steel, high-strength design, suitable for medium to

  heavy-duty fixing on solid substrates such as concrete.

• Various Specifications: Internal threads M6-M20, lengths 25-80mm, requires a matching installation tool.

• Advantages: Concealed installation, strong holding power, reusable threads, economical and practical,

  but requires a specialized expansion tool.

Working Principle

• Drilling and Insertion: Drill a hole of the appropriate diameter and depth in the concrete, and drop the

  anchor into the hole (head flush).

• Expansion Fixation: Using a specialized installation tool, tapping or rotating expands the bottom tapered

  section of the anchor body wall, gripping the hole wall tightly. 3. Threaded Application: Provides a

  permanent internal thread after expansion for bolt tightening; zinc plating enhances corrosion resistance.

• Load Distribution: Uniformly distributed expansion force provides high pull-out strength; the principle

  involves mechanical expansion and frictional grip.

Product Applications

• Ceilings and Piping: Secure hangers, light fixtures, or ventilation ducts to concrete ceilings for

  concealed practicality.

• Building Construction: Install railings, brackets, or curtain wall systems, providing a flush surface.

• Industrial Installations: Secure equipment bases or guardrails to concrete floors.

• Residential and Commercial: Secure shelves, signage, or cabinets; zinc plating is suitable for indoor

  visible applications.

• General Anchoring: Any project requiring high-strength internal thread anchoring.