A bright yellow vise body stands out on the shop floor. In addition to flat jaws, these vises have V jaws (also known as pipe jaws) that securely grip pipe and other round objects. The base swivels 360° and can be locked in place.

Hold pipe and fittings together for tack welding. These clamps can be used to join or weld two pipes of similar or different diameters, or they can be used to join a pipe to a flange. With a rugged build, they’re designed for use with heavy pipe.

External clamps work well when you can’t access the inside of your pipe. However, you may need to rotate them during welding to move them out of the way.

Internal clamps don’t obstruct joining or welding, making the process faster and simpler. One side of these two-part clamps expands with a knob while the other expands with a hand bar, so you can set them at different diameters to join pipe and flanges of varying sizes.

Clamps with thumb screws hold fittings or flanges at three separate points—adjust them manually to center the two pieces being joined.

Self-centering clamps consist of two clamps that share a center line even as you attach each to a different piece of pipe, so the pipes stay aligned with no manual adjustment needed.

The open clamp design permits welding around almost the entire pipe circumference. Secure components with chains and tighten the handles.

Aluminum clamps are lighter in weight than iron clamps. Iron clamps are more durable than aluminum.

Straight clamps are for use with two lengths of straight pipe and with reducers. Flange clamp is for flanges and straight pipe. Adjustable clamp is for use with straight pipe, elbows, tees, reducers, and risers. It pivots on a hinge to hold components at any angle from 90° to 180°.

Insert a pair of these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes. One pin in each pair has a level for vertical alignment. Use a separate level to align the flange horizontally. Also known as two-hole pins.

Pins with a 4 ½” length extension let you increase the length of your pins to align thicker flanges. Use the included couplings to connect the extension to your pins.

Line up two pipe flanges and determine pipe angle with the included nut-and-bolt pins, level, and protractor. Flange holes align as you tighten the pins.

Ensure an even seal around your flange—these tools align and level flanges in a single step. The strong magnets make sure your bolt holes are perfectly inline horizontally and that your flange isn’t tilted. If your flange is made of stainless steel or another nonmagnetic material, secure these aligners using the included threaded cones.