Pipe Joining and Welding Clamps
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.
For Pipe | ||||
|---|---|---|---|---|
| OD | Size | Body Material | Each | |
External Clamp—Thumb Screws | ||||
| 1"-2 1/2" | 3/4-2 | Steel | 0000000 | 0000000 |
| 2"-6" | 2-5 | Steel | 0000000 | 000000 |
| 5"-12" | 5-10 | Steel | 0000000 | 000000 |
External Clamp—Self-Centering | ||||
| 1/8"-3" | 1/8-2 1/2 | Stainless Steel | 0000000 | 000000 |
| 1 1/2"-5" | 1 1/4-4 | Stainless Steel | 0000000 | 000000 |
Internal Clamp—Self-Centering | ||||
| 2"-6" | 2-5 | Stainless Steel | 0000000 | 000000 |
| 4"-8" | 3 1/2-7 | Stainless Steel | 0000000 | 000000 |
| 6"-14" | 6-14 | Stainless Steel | 0000000 | 000000 |
Heavy Duty Chain Clamps for Pipe Joining and Welding
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°.
Bench Vise Jaws
Replace worn flat and V jaws.
V Jaws (also known as pipe jaws) securely grip pipe and other round objects.
Jaw | Overall | |||||||
|---|---|---|---|---|---|---|---|---|
| For Manufacturer Model Number | Material | Texture | Wd. | Ht. | Thick. | Mounting Fasteners Included | Each | |
Wilton | ||||||||
Flat Jaws | ||||||||
| 10006, 10056, 300N, 300S | Steel | Serrated | 3" | 3/4" | 1/2" | Yes | 0000000 | 0000000 |
| 10011, 10066, 10200, 350N, 350S, C-0 | Steel | Serrated | 3 1/2" | 1 1/4" | 5/8" | Yes | 0000000 | 000000 |
| 10016, 10076, 400N, 400S | Steel | Serrated | 4" | 1 1/4" | 5/8" | Yes | 0000000 | 000000 |
| 10021, 10086, 10225, 450N, 450S, C-1 | Steel | Serrated | 4 1/2" | 1 1/4" | 5/8" | Yes | 0000000 | 000000 |
| 10026, 10096, 500N, 500S | Steel | Serrated | 5" | 1 1/4" | 5/8" | Yes | 0000000 | 000000 |
| 10031, 10107, 600N, 600S | Steel | Serrated | 6" | 1 1/2" | 1" | Yes | 0000000 | 000000 |
| 10036, 10116, 800N, 800S | Steel | Serrated | 8" | 1 1/2" | 1" | Yes | 0000000 | 000000 |
| 10250, C-2 | Steel | Serrated | 5" | 1" | 5/8" | Yes | 00000000 | 000000 |
| 10275, C-3 | Steel | Serrated | 6" | 1 3/8" | 9/16" | Yes | 00000000 | 000000 |
| 11126, 674 | Steel | Serrated | 4 1/2" | 15/16" | 1/2" | Yes | 0000000 | 00000 |
| 11127, 675 | Steel | Serrated | 5 1/2" | 3/4" | 3/8" | Yes | 0000000 | 00000 |
| 11128, 676 | Steel | Serrated | 6 1/2" | 3/4" | 7/8" | Yes | 0000000 | 00000 |
| 14500, 4500 | Steel | Serrated | 5 1/2" | 3/4" | 1/2" | Yes | 0000000 | 00000 |
| 1550, 21400, 63187, 745 | Steel | Serrated | 5" | 3/4" | 1/2" | Yes | 0000000 | 00000 |
| 1560, 21500, 63188, 746 | Steel | Serrated | 6" | 1" | 5/8" | Yes | 0000000 | 00000 |
| 1745, 63199 | Steel | Serrated | 4 1/2" | 3/4" | 1/2" | Yes | 0000000 | 00000 |
| 1755, 63200 | Steel | Serrated | 5 1/2" | 3/4" | 1/2" | Yes | 0000000 | 00000 |
| 1765, 63201 | Steel | Serrated | 6 1/2" | 1" | 5/8" | Yes | 0000000 | 000000 |
| 1780, 1780A, 63202 | Steel | Serrated | 8" | 1" | 5/8" | Yes | 0000000 | 000000 |
| 191, 656HD | Steel | Serrated | 6 1/8" | 1" | 1/2" | Yes | 0000000 | 00000 |
| 21300, 744 | Steel | Serrated | 4" | 3/4" | 1/2" | Yes | 0000000 | 00000 |
| 21800, 748A | Steel | Serrated | 8" | 1" | 1/2" | Yes | 0000000 | 00000 |
| 63198, 63244, CBV-65, SBV-65 | Steel | Serrated | 2 1/2" | 1/2" | 1/4" | Yes | 0000000 | 00000 |
| 63247, 63248, CBV-100, SBV-100 | Steel | Serrated | 4" | 7/8" | 1/2" | Yes | 0000000 | 00000 |
| 63300, WS4 | Steel | Serrated | 3 7/8" | 3/4" | 3/8" | Yes | 0000000 | 00000 |
| 63301, WS5 | Steel | Serrated | 4 7/8" | 13/16" | 7/16" | Yes | 0000000 | 00000 |
| 63302, WS6 | Steel | Serrated | 5 15/16" | 13/16" | 1/2" | Yes | 0000000 | 00000 |
| 63304, WS8 | Steel | Serrated | 7 7/8" | 1 1/8" | 5/8" | Yes | 0000000 | 00000 |
V Jaws | ||||||||
| 10200, 1780, 63202, 63402, C-0 | Steel | Serrated | 1" | 2 1/4" | 1 1/2" | Yes | 0000000 | 000000 |
| 10225, C-1 | Steel | Serrated | 1 1/8" | 2 3/4" | 1 3/4" | Yes | 00000000 | 000000 |
| 10250, C-2 | Steel | Serrated | 1 1/4" | 3 1/4" | 1 3/4" | Yes | 00000000 | 000000 |
| 10275, C-3 | Steel | Serrated | 1 1/4" | 3 1/4" | 2" | Yes | 00000000 | 000000 |
| 1550, 1560, 21300, 21400, 21500, 21800, 63187, 63188, 744, 745, 746, 748A | Steel | Serrated | 9/16" | 1 3/4" | 1 1/8" | Yes | 0000000 | 00000 |
| 1740, 1745, 1750, 1755, 1760, 1765, 2040, 2050, 63199, 63200, 63201 | Steel | Serrated | 9/16" | 1 3/4" | 1 1/8" | Yes | 0000000 | 00000 |
Yost | ||||||||
Flat Jaws | ||||||||
| 103-1/2, 131C, 203-1/2, 31C | Steel | Serrated | 1" | 3 1/2" | 1/2" | Yes | 00000000 | 00000 |
| 104-1/2, 132C, 204-1/2, 32C | Steel | Serrated | 1" | 4 1/2" | 1/2" | Yes | 00000000 | 000000 |
| 105, 133C, 205, 33C | Steel | Serrated | 1" | 5" | 1/2" | Yes | 00000000 | 000000 |
| 45C | Steel | Serrated | 4 1/2" | 1" | 1/2" | Yes | 0000000 | 00000 |
| 55C | Steel | Serrated | 5 1/2" | 1" | 1/2" | Yes | 0000000 | 00000 |
| 65C | Steel | Serrated | 6 1/2" | 1" | 1/2" | Yes | 0000000 | 00000 |
| 904-AS, 904-HV-AS, WRBV-4 | Steel | Serrated | 4" | 3/4" | 3/8" | Yes | 0000000 | 00000 |
| 905-AS, 905-HV-AS, WRBV-5 | Steel | Serrated | 5" | 7/8" | 1/2" | Yes | 0000000 | 00000 |
| 906-AS, 906-HV-AS, WRBV-6 | Steel | Serrated | 6" | 7/8" | 1/2" | Yes | 0000000 | 00000 |
| 908-AS, 908-HV-AS, WRBV-8 | Steel | Serrated | 8" | 7/8" | 1/2" | Yes | 0000000 | 00000 |
| 910-AS, 910-HV-AS, WRBV-10 | Steel | Serrated | 10" | 7/8" | 1/2" | Yes | 0000000 | 00000 |
V Jaws | ||||||||
| 131C, 132C, 31C, 32C, 45C, 55C, 65C | Steel | Serrated | 2 1/2" | 2" | 1/2" | Yes | 00000000 | 000000 |
| 133C, 33C, 80C | Steel | Serrated | 2" | 3 1/4" | 1/2" | Yes | 0000000 | 000000 |
| 133C, 33C, 80C | Steel | Serrated | 3 1/4" | 2" | 1/2" | Yes | 00000000 | 000000 |
| 134C, 34C | Steel | Serrated | 4 1/2" | 2" | 3/4" | Yes | 00000000 | 000000 |
Morgan-Milwaukee | ||||||||
Flat Jaws | ||||||||
| 130, 30 | Steel | Serrated | 3" | 1" | 1" | Yes | 0000000 | 000000 |
| 135, 35 | Steel | Serrated | 3 1/2" | 1" | 1" | Yes | 0000000 | 000000 |
| 140, 40 | Steel | Serrated | 4" | 1 1/4" | 1" | Yes | 0000000 | 000000 |
| 145, 45 | Steel | Serrated | 4 1/2" | 1 1/4" | 1" | Yes | 0000000 | 000000 |
| 150, 50 | Steel | Serrated | 5" | 1 1/4" | 1" | Yes | 0000000 | 000000 |
| 160, 60 | Steel | Serrated | 6" | 1 3/8" | 1/2" | Yes | 0000000 | 000000 |
| 180, 80 | Steel | Serrated | 8" | 1 1/2" | 1/2" | Yes | 0000000 | 000000 |
High-Visibility Bench Vises
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.
Vises | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flat Jaw | Overall | Mounting Holes | Replacement Flat Jaws | ||||||||||||||
| Wd. | Max. Opening | Material | Texture | V Jaw For Dia. | Throat Dp. | Lg. | Wd. | Ht. | Wt., lbs. | Mounting Fasteners Included | No. of | Dia. | Specifications Met | Each | Each | ||
With Flat and V Jaws | |||||||||||||||||
360° Swivel Base | |||||||||||||||||
| 4" | 4" | Steel | Serrated | 1/4"-1 1/2" | 2 1/4" | 12 1/2" | 5 1/2" | 6" | 17 | No | 3 | 1/2" | OSHA Compliant 29 CFR 1910.144 | 0000000 | 0000000 | 0000000 | 000000 |
| 5" | 5" | Steel | Serrated | 1/2"-1 1/2" | 2 5/8" | 14 1/2" | 6 1/2" | 6 3/4" | 24 | No | 3 | 9/16" | OSHA Compliant 29 CFR 1910.144 | 0000000 | 000000 | 0000000 | 00000 |
| 6" | 6" | Steel | Serrated | 1/2"-2" | 3" | 17" | 6 3/4" | 7 1/2" | 33 | No | 3 | 9/16" | OSHA Compliant 29 CFR 1910.144 | 0000000 | 000000 | 0000000 | 00000 |
| 8" | 8" | Steel | Serrated | 3/4"-2 1/4" | 3 1/2" | 19 1/2" | 8" | 8" | 49 | No | 3 | 5/8" | OSHA Compliant 29 CFR 1910.144 | 0000000 | 000000 | 0000000 | 00000 |
| 10" | 10" | Steel | Serrated | 7/8"-2 3/4" | 4" | 22 1/2" | 10" | 8 1/2" | 56 | No | 3 | 5/8" | OSHA Compliant 29 CFR 1910.144 | 0000000 | 000000 | 0000000 | 00000 |
Pipe Flange Aligner Pins
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.
Pipe Flange Alignment Kits
Align flanges on heavy pipes when alignment pins don't fit through the flange holes. Often used for pipefitting, welding, and maintenance, these kits make it possible to correct angular and offset misalignment on a range of pipe sizes.
Choose an alignment mechanism based on how much force you need to move the pipe. If you're not sure, measure the flange hole diameter—it correlates to the pressure class and size of your pipe. Larger pipes typically require more force.
Hand-crank aligners are best for routine maintenance and quick repairs. As you turn the hand crank, it moves the pipe.
Ratchet aligners produce four times as much force as hand crank aligners. Position the tool's arm through a flange hole on the pipe you plan to move, and place the lead screw on the edge of the stationary pipe's flange. Wrap the strap around the pipe you plan to move. As you rotate the lead screw with a wrench, the misaligned pipe moves into position.
Hydraulic aligners are best for severe misalignment—they generate over twice as much force as ratcheting aligners. Position the tool's arm through the flange hole on the pipe you plan to move, and place the lead screw on the edge of the stationary pipe's flange. Wrap the strap around the pipe you plan to move. As you press down on the hand pump connected to the lead screw, the pipe moves.
| Alignment Mechanism | Capacity, lbs. | For Min. Flange Hole Dia. | Includes | Container Type | Each | |
| Hand Crank | 2,400 | 5/8" | Strap | __ | 0000000 | 000000000 |
| Ratchet | 9,900 | 1" | Socket, Strap, Wrench | Plastic Carrying Case | 0000000 | 00000000 |
| Hydraulic | 22,200 | 1 3/8" | Hand Pump with Gauge, Hydraulic Cylinder, Hydraulic Hose, Strap | Plastic Carrying Case | 0000000 | 00000000 |
Pipe Flange Aligner Pins with Horizontal Level
Ensure horizontal alignment of pipe flanges with a level rod that runs between two alignment pins. One pin in each pair has a level for vertical alignment. Insert these nut-and-bolt pins into adjacent flange holes and tighten to align flanges before connecting two pipes.
Stepped Pipe Flange Aligner Pins
Each step on these aligner pins matches common bolt holes on pipe flanges, so they're more precise than conical aligner pins and don’t require nuts. Press the pair of pins into mated flanges to make sure the flanges are aligned. Once two sets of holes are aligned, you'll know the rest of the holes are as well. Made of durable chrome-plated steel, they'll hold their shape over time and resist rust.
Pipe Flange Aligners with Protractor
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.
| For Flange Hole Dia. | Angle Measuring Range | Graduation Marks (Numeric Increments) | For Distance Between Bolt Holes | Each | |
Aluminum | |||||
|---|---|---|---|---|---|
| 3/16"-1 3/4" | 0°-90° | 2.5° (2°) | 2"-5 1/2" | 0000000 | 0000000 |
Magnetic Pipe Flange Aligners with Level
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.
| For Flange Hole Dia. | For Max. Ctr-to-Ctr Flange Hole Distance | Level Lg. | Includes | Cone Material | Magnet Material | Container Type | Each | |
Aluminum Body | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2"-2" | 9 1/2" | 10 1/2" | Threaded Cones | Steel | Neodymium | Carrying Case | 0000000 | 0000000 |
Magnetic Pipe Flange Aligner Pins
Swiftly and accurately align pipe flange bolt holes without the hassle of threads. These pins have strong magnets that snap together. Insert them into adjacent bolt holes to help make sure flanges are parallel before connecting pipes. Also known as two-hole pins.
Pins for 2 3/4″ thick flanges can be used with extensions (sold separately) to lengthen their reach for flanges up to 3 1/2″ thick.