Building Material Galvanized Steel Wedge Pin Stub Pin for Formwork System

Product Description

                   Building Material Galvanized Steel Wedge Pin Stub Pin for Formwork System

Product Description

To meet various requirements for corrosion resistant or strength,Wedge Pins could be further treated such as heating, black oxide, zinc coating,hot dipper galvanizing, black zinc coating, brass coating.
The length from 50 mm to 190 mm and our pin products are hollow and solid.We can meet all your needs in price, model and quality.

 

Our Advantages

      1. We are ODM&OEM, design according to your drawing.
      2. Rich experience and good technology support.
      3. Manufacturer and Trade Company.
      4. Low MOQ is accepted.
      5. 100% inspection before delivery.
      6. Competitive price with high quality.
      7. Convenient transportation. 

 

Product features

♦ Surface treatment: Galvanized.
♦ Certificate: ISO 9001, SGS.
♦ Package: By Pallet suitable for sea transportation or as requested.
♦ OEM service available.
♦ Samples are available.

Product Parameters

 

process	Pressed
Surface	Mill or galvanised
Size	M16×50mm  M16×54mm  M16×130mm  M16×135mm  M16×175mm   M16×190mm
Color	Black, Silver, Yellow
Feature	High Tensile
Application	construction formwork
Packing	by waven bag, cartons, pallets

Production process

        1. Tooling (Mold) design and Manufacture.
        2. Manufacture the parts according to the Stamping Machine.
        3. Riveting, Welding or Screw tap according to Customer's require.
        4. After finish manufacture process we will test the parts by the Image measurement instrument, Caliper,
        Angel Gage etc.
        5. After make sure all the dimension can reach customer's require, we will make the surface treatment 
        process.
        6. After finish surface treatment we will testing all the parts by worker so that we can make sure the 
        parts which we sell is 100% qualified.
        7. After finish testing we will pack the parts by Vacuum Package Machine.

Quality control

         * We have specialized QC testers to check the quality of the products according to different customers
         requirement. Usually, it's a random inspection, and we also offer 100% inspection at a reasonable price
         if required.
         * We have IQC to check the dimensions and surface of the incoming material
         * We have PQC to inspect full-course during the manufacturing processing
         * We have FQC to inspect all the anodizing/plating and other finishes products from our supplier and
         proceed with the professional quality and appearance inspection before shipping.

Delivery:
1. Production: For full container, normally we need 20-30 days after receiving the customer's down payment.
2. Transportation: It depends on the destination charge port.
3. Negotiation is needed for special requirements. 

 

FAQ

 

1. What is a wedge pin?

A wedge pin is a simple yet highly effective mechanical fastener consisting of a tapered pin that is driven into a matching hole or between two components to lock them together. The taper creates a powerful frictional and mechanical lock that tightens under load, making it resistant to vibration and shock.

2. How does a wedge pin work?

The principle is based on controlled taper interference:

• The pin has a slight taper (typically 1:100 to 1:20 ratio)

• When driven into a straight hole or between parts, the taper forces material outward

• This creates radial pressure and friction, locking the pin in place

• Unlike a straight pin, it becomes tighter when pulled or loaded

3. What are the main types of wedge pins?

• Standard Taper Pins: Simple cylindrical pins with uniform taper

• Slotted Wedge Pins: Have a longitudinal slot allowing slight compression during insertion

• Grooved Wedge Pins: Feature circumferential grooves that deform material for extra locking

• Threaded Wedge Pins: Combine taper with threads for adjustable preload

• Quick-Release Wedge Pins: Include a retention ring or spring mechanism (often called "linch pins")

4. What are the key advantages of wedge pins?

• Vibration Resistance: Actually tightens under dynamic loads

• Easy Installation/Removal: Can be installed with simple hammering; removed with a drift punch

• No Threads to Strip: Eliminates thread wear issues

• Shear Strength: Excellent for transmitting shear loads

• Self-Aligning: Helps align mating components during assembly

• Reusable: Can be used multiple times in same application

5. Where are wedge pins commonly used?

• Heavy Machinery: Connecting linkages, lever arms, and control rods

• Construction Equipment: Bucket teeth, blade attachments, boom connections

• Railway Systems: Track fastening, coupler mechanisms

• Agricultural Machinery: Implement attachments, tillage components

• Tooling & Fixtures: Securing cutter heads, die sets, mold components

• Structural Steel: Temporary bracing and alignment during erection

• Traditional Woodworking: Furniture joinery and timber framing

6. How do you select the right wedge pin size?

Key parameters:

• Diameter: Usually specified at the large end of the taper

• Taper Ratio: Common standards: 1:50 (metric), 1:48 (ANSI), or 1:20 (quick taper)

• Length: Must be appropriate for material thickness

• Material: Based on strength requirements and corrosion resistance

• Fit: Class of fit (precise vs. general purpose) for the application

Rule of thumb: The pin should protrude enough to allow proper driving and removal, but not so much that it interferes.

7. What materials are wedge pins made from?

• Carbon Steel: Most common, suitable for general applications

• Alloy Steel: Heat-treated for high-strength applications (4140, 4340)

• Stainless Steel: For corrosion resistance (304, 316)

• Brass/Bronze: Non-sparking or where galling is a concern

• Aluminum: Lightweight applications with lower strength needs

8. How do you properly install a wedge pin?

1. Prepare Hole: Ensure clean, burr-free mating holes

2. Align Components: Parts must be properly aligned before insertion

3. Insert Pin: Start small end first; some designs work either direction

4. Drive Home: Use a soft-faced hammer; strike squarely

5. Check Fit: The pin should be tight with slight protrusion

6. Secure (if needed): Some applications use a cotter pin or keeper through the small end

Important: Do not overtighten! Excessive force can distort components.

9. How do you remove a wedge pin?

1. Identify Driving Direction: Usually drive out from small end to large end

2. Support Components: Prevent damage from falling parts

3. Use Proper Drift Punch: Select punch slightly smaller than pin's small end

4. Apply Force: Strike squarely with hammer; use penetrating oil if corroded

5. Clean: Remove all burrs from hole before reinstallation

10. What are common failure modes?

• Shear Failure: When loads exceed pin's shear strength

• Brinelling/Galling: Surface damage from improper installation/removal

• Corrosion Seizing: Permanently locked due to rust/corrosion

• Hole Elongation: Wear from repeated installation/removal

• Fatigue Cracking: From cyclic loading (less common with proper fit)

11. What are alternatives to wedge pins?

• Straight Dowel Pins: For precision alignment without taper

• Taper-Lok® Pins: Proprietary pins with compound tapers

• Clevis Pins with Cotter Pins: For pivot joints

• Bolted Connections: Where disassembly is frequent

• Roll Pins (Spring Pins): For lighter duty applications

12. What safety precautions are necessary?

• Always wear eye protection when installing/removing

• Ensure components are properly supported before removal

• Use the correct size punch to avoid mushrooming pin ends

• Never modify pins by grinding or welding

• Inspect regularly for wear, corrosion, or deformation

• Follow manufacturer's torque/installation specifications

13. How do you calculate the holding force?

Holding force depends on:

• Taper angle

• Material strength

• Surface finish

• Installation force

• Friction coefficient

         If you are interested in our products, please send a message to us! 

      Quality First, Price Best, Service Foremost!
      We assure you of our best services at all times!