The DongCheng HD072012 12-Inch (300mm) Water Pump Plier is built for heavy-duty industrial pipe fitting, maintenance, and high-torque mechanical operations. Designed with a long lever arm and deep-cut gripping jaws, this plier achieves a maximum clamping opening of up to 65mm (clamping range 12–65mm).
Manufactured from heat-treated forged alloy steel, the plier head is protected with a black anti-corrosion coating and precision polish. The multi-slot adjustable pivot allows rapid adjustments to different diameters while maintaining solid parallel clamping force. The two-color soft-grip handles ensure maximum leverage and comfortable, non-slip operation.
Key Features
- Extra-Wide Clamping Capacity: Handles large-diameter pipes with a 12–65mm clamping range and 65mm maximum opening.
- High-Leverage 12" Length: Longer handles provide increased leverage to loosen tightly seated fittings.
- Self-Locking Grip: Hardened jaw serrations bite into pipes and nuts to prevent slipping under heavy rotational loads.
- Corrosion-Resistant Surface: Black finish and polished surfaces guard against rust and abrasive wear.
- Dual-Color Soft Handles: Ergonomic handles absorb pressure and ensure non-slip grip during high-torque work.
Applications
- Large plumbing lines, commercial water pipelines, and heavy sanitary fittings
- Turning and tightening broad hex couplings, valves, and unions
- Heavy equipment maintenance, mechanical repairs, and agricultural machinery
- Industrial construction, HVAC ducting, and water pump overhauls
- General workshop fabrication and facility maintenance
Technical Specifications
| Parameter | Specification |
| Brand | DongCheng |
| Model Number | HD072012 |
| Tool Type | Water Pump Plier / Groove Joint Plier |
| Size / Length | 12 Inch / 300 mm |
| Max Clamping Opening | Up to 65 mm |
| Clamping Range | 12 – 65 mm |
| Surface Finish | Black finish and polish |
| Handle Type | Two-color soft handle |
| Packaging Type | Half double blister |
Size/Model-wise Table
| Model | Size | Clamping Range | Max Opening | Surface Finish | Handle Grip | Packaging |
| HD072012 | 12" / 300 mm | 12–65 mm | 65 mm |













