... 36", 48".2) Hook jaw drop-forged with high quality carbon steel and heat-treated.3) Teeth induction quenched, cast iron handle4 ... CapacityActual Units Produced(Previous Year)Aluminum Pipe Wrench,rigid style,steel pipe clamps423,496 PCS per month4,024,642 PCS ... Strength TesterGP-504A14.0AcceptableMetallographic Specimen Inlaying MachineXQ-116.0Acceptable Heavy Duty Pipe Wrench steel pipe clamps