Steel Pipe | McMaster-Carr

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Compressed Non-Asbestos Synthetic Fiber

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Threaded on Both Ends

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High-Polish Quick-Clamp Fittings

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Compliant with Exemptions

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31,125 Products

Fluid Handling

Pipe and Pipe Fittings

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

14,294 products

Tubing

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

1,138 products

Tube Fittings

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

6,049 products

Hose and Hose Fittings

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

2,819 products

Duct Hose and Fittings

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

122 products

Pipe Joiners

Connect heavy and difficult-to-position gasketed pipe without powered equipment

1 product

Orifice Valves

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

447 products

On-Off Valves

Start and stop flow through a line

1,108 products

Sights

Observe and monitor the contents of pipes, tanks, and other containers

116 products

Gauge Siphon Tubes

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

24 products

Raw Materials

Steel

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

605 products

Stainless Steel

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

290 products

Heating, Ventilation, and Air Conditioning

Duct and Fittings

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

1,651 products

Chimney Pipe and Fittings

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

28 products

Diffuser Collars

Connect diffusers to duct

4 products

Duct Airflow Dampers

Regulate airflow to sections of duct

58 products

Duct Access Panels

Create an entry point for cleaning and inspecting duct; also known as cleanouts

24 products

Building and Machinery Hardware

Slip-On Framing and Fittings

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

8 products

Clamp-On Framing and Fittings

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

55 products

Weld-Together Framing and Fittings

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

18 products

Electrical

Conduit and Conduit Fittings

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

150 products

Lighting

Lamp Pipe

Connect lamp components and conceal wires when building or repairing lamps

18 products

Sealing

Pipe Gaskets

Form tight seals when connecting flanged pipe fittings

260 products

Facility and Grounds Maintenance

Sink Drain Tailpieces

Connect drains to P-traps and S-traps

3 products

Sink Drains

Empty liquids from sinks into sewer lines

25 products

Material Handling

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products

Fastening and Joining

Pipe Wrenches

Grasp and turn pipe, conduit, and fittings

96 products

Communication

Pipe Markers

Identify pipe contents and flow in a range of environments

3 products