Steel Metric Pipe | McMaster-Carr

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Stainless Steel

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Threaded on Both Ends

Threaded on One End

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Expansion Joint

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OD

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

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Fitting Material

Stainless Steel

Fitting Connection

Expand to Connect

Interlocking Bracket

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For Use With

High-Polish Quick-Clamp Fittings

Nonabrasive Slurries

Organic Solvents

Flange Material

Stainless Steel

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Stainless Steel

Export Control Classification Number (ECCN)

DFARS Specialty Metals

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Compliant with Exemptions

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Internal Reinforcement

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23,266 Products

Fluid Handling

Pipe Nipples and Pipe

Pipe Nipples and Pipe

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

Pipe Flanges

Create an access point in a line by bolting two same-size flanges together with a gasket

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Expansion Joints

Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

Tubing

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Duct Hose and Fittings

Duct Hose and Fittings

Connect to blowers and vacuums to move air, fumes, dust, chips, and liquids

Hose and Hose Fittings

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Gauge Siphon Tubes

Gauge Siphon Tubes

Fill with water to protect dry gauges from steam and high-temperature liquids; also called pigtails

Heat Pipes

Protect equipment from damage by routing heat away, toward a heat sink

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

Raw Materials

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Plastic

A lightweight alternative to metal and glass

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

Brass

More machinable than copper and bronze—all with material certificates for traceability

Building and Machinery Hardware

Slip-On Framing and Fittings

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

Flush-Fit Framing Rails

Flush-Fit Framing Rails

Join flush-fit framing rails to build smooth stair and platform railings

Weld-Together Framing and Fittings

Weld-Together Framing and Fittings

Permanently join rails and fittings to assemble heavy duty racks, shelving, and work tables

Heating, Ventilation, and Air Conditioning

Duct and Duct Fittings

Duct and Duct Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

Chimney Pipe and Fittings

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

Diffuser Collars

Diffuser Collars

Connect diffusers to duct

Electrical

Conduit and Conduit Fittings

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)