jcwwolk Pipe Fitting Inner Clamp, Flange Aligner, Stainless Steel 3 Jaw Centering Tool, 40-80mm / 80-170mm for to Welding

【3 Jaw Internal Alignment】: Three expandable jaws come into contact with the inner part of the pipe to provide controlled centering and positioning before welding, helping to align compatible pipes and flanges during assembly, assembly and fabrication stages. 【Two Size Options】: Choose 40-80mm (1.57-3.15 inch) option for inner pipe diameters within this range or 80-170mm (3.15-6.69inch) for larger pipe sizes. Measure the inner diameter of the tube before ordering to select the appropriate internal alignment clamp. 【Stainless Steel Construction】: Made with a stainless steel structure and contact components, this internal pipe alignment tool provides a rigid mechanical platform for repeated pipe assembly, flange alignment and welding preparation. 【3-Jaw Adjustable Expanding】: By rotating the adjustment screw, you can easily expand or retract the three jaws inside the tube. The three-point balanced contact helps establish internal centering while allowing for quick installation and removal during assembly. 【Model Size & Weight】: The 40-80mm option measures 260 x 45 x 45 mm (10.24 x 1.77 x 1.77 inches) and weighs 0.7 kg (1.54 lb); 3150-6.7 lb option. 693 in It measures 335 x 75 x 75 mm (13.19 x 2.95 x 2.95 inches) and weighs 2.1 kg (4.63 lbs).