Pipe Expanders | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD

	For Use On For Use On

	For Square Drive Size For Square Drive Size

3/8"

1/2"

3/4"

	Power Source Power Source

	For Maximum Wall Thickness For Maximum Wall Thickness

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Drive Style Drive Style

External Hex

Square

	Pipe Size Pipe Size

1 1/2
2
2 1/2
3
4
5
6
8
10
12

	Material Material

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Length Length

	Type Type


Connector	Expansion Joint

	For Flare Angle For Flare Angle

37°

45°

	Drive Size Drive Size

3/8"

1 1/8"

	Connection Style Connection Style

Flanged

Clamp On

Butt Weld

	For Use With For Use With

Sodium Carbonate
(20% in Water)

Steam

Water

	For Copper Tube Size For Copper Tube Size

	For EMT Conduit Trade Size For EMT Conduit Trade Size

1/2

3/4

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Maximum Temperature Maximum Temperature

	Number of Bolt Holes Number of Bolt Holes

	Bolt Hole Type Bolt Hole Type

183 Products

Selecting and Measuring Expansion Joints

For information about selecting pipe size, see Selecting and Measuring Pipe & Fittings.

Tube Expanders for Impact Wrenches

Use the power of an impact wrench to stretch the ends of metal tubing, allowing another tube with the same diameter to fit inside.

Tube Expanders

Enlarge the end of a tube to allow a second piece of the same diameter to fit inside.

Hammer-Driven Tube Expanders

Using a hammer, tap these expanders into the end of a tube to allow a second piece of the same diameter to fit inside.

Tube Expanders for Condensers,
Heat Exchangers, and Boilers

Designed for building and maintaining equipment with tubes that pass through perforated metal sheets, these expanders have rollers and tapered noses to ensure uniform tube tightness.

Expanding Pliers for Soft Tubing

Stretch the end of soft plastic and rubber tubing to make room for fittings with the same or slightly larger diameter.

Hammer-Driven Tube Flarers for 45° Flares

Tap this tool with a hammer to quickly form 45° flared ends in copper tubing.

Hand-Held Tube Flarers for 45° Flares

Form 45° flares in aluminum, brass, or copper tubing so it’s compatible with flared tube fittings often used in low-pressure plumbing, air conditioning, and refrigeration systems.

Hand-Held Tube Flarers for
Single and Double 45° Flares

Double flares roll the end of tubing in on itself then flare both layers for applications such as brake lines.

Vise-Mount Tube Flarers for 37° Flares

Use these tools to flare both soft and hard metal tubing.

Vise-Mount Tube Flarers and Reamers for 37° Flares

Ream and flare both soft and hard metal tubing with these tools.

Hand-Held Tube Flarers for 37° Flares

Flare soft metal tubing.

Vise-Mount Tube Flarers for 37° and 45° Flares

Mount these flarers in a vise and create single and double 37° and 45° flares.

Tube Flarers and Expanders for 45° Flares

Create 45° flares for low-pressure applications.

Hammer-Driven Tube End Reshapers

Restore tube ends with a few light blows of a hammer.

Hammer-Driven Thin-Wall (EMT) Conduit End Reshapers

Hammer-Driven Thin-Wall
(EMT) Conduit End Reshapers

Repair ends of thin-wall (EMT) conduit that have been warped by cutting.

Expansion Joints

High-Temperature All-Metal
Expansion Joints with Flanged Ends

These all-metal expansion joints can handle high temperatures up to 800° F.

Expansion Joints with Flanged Ends

The flanged ends on these expansion joints rotate for easy bolt hole alignment during installation.

Chemical-Resistant Expansion Joints with Flanged Ends

The PTFE body on these expansion joints has a super-smooth surface that stands up to corrosive chemicals.

Expansion Joints with Flanged Ends for High Vibration

These expansion joints have a double-bulb design for extra movement and vibration absorption.

Expansion Joints with Sealing
Flanged Ends for Metal Pipe

Expansion Joints with Sealing
Flanged Ends for Plastic Pipe

Clamp-On Expansion Joints for Drain, Waste, and Vent

These joints are designed for vertical use in drain, waste, and vent systems.

Clamp-On Expansion Joints

Slip these joints over your pipe ends and tighten the band clamps for a secure hold.

Expansion Joints with Butt-Weld Ends

These joints weld to unthreaded pipe or another butt-weld fitting for a leak-resistant permanent connection.