Plastic-coated Handle Heavy-duty Pipe Wrenches

BOSI's Plastic-coated Handle Heavy-duty Pipe Wrenches feature high-quality forged carbon steel heads, heat-treated for uniform hardness and wear resistance. The precision-designed teeth prevent slippage when gripping pipes, providing a strong grip. The ergonomically designed, plastic-coated handle is non-slip and effortless, reducing fatigue even during extended use. Available in eight sizes from 8 inches (200mm) to 48 inches (1200mm), with maximum openings ranging from 27mm to 141mm. Complies with standard QB/T2508. Suitable for tightening and loosening large-diameter pipes in household plumbing repairs, industrial pipeline installations, petrochemical projects, and municipal engineering.

Product Advantages

Old-style pipe wrenches suffer from problems such as slipping jaws, uncomfortable handles, and insufficient opening size. BOSI's Plastic-coated Handle Heavy-duty Pipe Wrenches are professional-grade piping tools.

Their 48-inch wrenches have a maximum opening of 141mm, allowing direct clamping of DN100 (approximately 114mm outer diameter) main pipes; the plastic-coated handles prevent slippage in rainy conditions; and the precision-engraved teeth ensure a secure grip even on rusted pipe surfaces.

Production Process 

High-quality carbon steel bar stock → Heated forging of wrench head → Edge trimming and shaping → Milling of teeth (precision meshing teeth) → Overall heat treatment → Assembly of plastic-coated handle → Opening size calibration → Sampling inspection of clamping force → Rust-preventive oil spraying → Packaging and warehousing.

Quality Inspection Items 

Each batch is sampled for inspection: pliers head hardness (HRC 45-50, conforming to QB/T2508); no slippage in the tooth engagement; the bonding force between the plastic-coated handle and the pliers body is ≥50N; the opening size tolerance is ±2mm; and the surface is free of rust and burrs.

Sample Policy

Free Sample: Large-volume potential customers can apply for one free sample (shipping costs to be borne), details to be discussed with sales.

Paid Samples: Purchase at retail price; sample fee fully refunded after a certain order amount.

Customized Samples: Sample fee required; deductible after bulk order.