The DongCheng HD071112 12-Inch (300mm) Heavy-Duty Straight Pipe Wrench is engineered for plumbing maintenance, industrial pipeline installations, gas fitting, and high-torque mechanical pipe assemblies. Built with a mobile jaw drop-forged from high-grade carbon steel, the induction-hardened, self-cleaning hook and heel teeth provide biting traction on smooth, threaded, and cylindrical metal pipe surfaces.

The wrench features an inactivate anti-rust surface treatment that shields the body against shop chemicals, oils, and workplace moisture. Reinforced with a high-shear solid rivet pivot and a knurled adjustment ring, it maintains jaw tracking under heavy rotational torque. With a maximum clamping capacity of up to 40mm (approx. 1-1/2" pipe), its ductile cast handle provides balanced manual leverage without excessive weight. Packed on a protective hanging paper card for workshop organization.

Key Features

Drop-Forged High-Carbon Steel Mobile Jaw: Heat-treated hook jaw resists tooth wear, chipping, and deformation under severe torque loads.
40mm Maximum Clamping Capacity: Securely grips threaded and black iron pipes, conduit, and round fittings up to 40mm diameter.
Inactivate Anti-Corrosion Treatment: Specialized surface finish provides protection against rust, oxidation, and plumbing moisture.
Solid Rivet Reinforcement: High-shear solid rivet pivot assembly ensures structural alignment and prevents jaw wobble.
Smooth Knurled Adjustment Nut: Heavy-duty threaded collar allows fast, one-handed jaw adjustments and continuous grip sizing.
Balanced 300mm (12") I-Beam Handle: Delivers mechanical leverage for tight plumbing joints while fitting easily in jobsite toolbags.
Paper Card Packaging: Shipped mounted on a branded card for easy hanging and display.

Applications

Industrial pipe fitting, commercial plumbing, and municipal water line installations
Fastening and loosening galvanized iron, black iron, and carbon steel threaded pipes
Gas line assemblies, meter fittings, valve maintenance, and HVAC piping
Pump casing servicing, boiler room infrastructure, and compressor airline work
Heavy plant maintenance, mechanical fabrication, and site construction utility tasks

Technical Specifications

Parameter	Specification
Brand	DongCheng
Model Number	HD071112
Tool Type	Heavy-Duty Straight Pipe Wrench
Size / Length	12 Inch / 300 mm
Max Clamping Diameter	40 mm
Mobile Jaw Material	Drop-Forged High-Quality Carbon Steel
Surface Treatment	Inactivate Anti-Rust Treatment
Assembly Structure	Solid Rivet Reinforcement
Adjustment Mechanism	Knurled Threaded Adjustment Ring
Packaging Type	Packed by paper card

Size/Model-wise Table

Model	Size	Max Clamping Diameter	Mobile Jaw Material	Surface Treatment	Structure	Packaging
HD071112	12" / 300 mm	40 mm	Drop-Forged Carbon Steel	Inactivate Treatment	Solid Rivet	Paper Card

DongCheng HD071112 12" / 300mm Industrial Heavy-Duty Straight Pipe Wrench with Drop-Forged Carbon Steel Jaws (40mm Capacity)

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