Steam Pipe | McMaster-Carr

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System of Measurement

Pipe Size

Material

Stainless Steel

Pipe Schedule

Fitting Type

Expansion Joint

Reducing Adapter

Length

Threading

Threaded on Both Ends

Threaded on One End

Thread Type

UN/UNF (SAE Straight)

Shape

Side-Outlet Elbow

Side-Outlet Tee

Fitting Material

Stainless Steel

Fitting Connection

Spec Image

Push to Connect

Spec Image

Quick Disconnect

Spec Image

Pressure Class

Gender

OD

9/16" to 21/32"

Flange Material

Stainless Steel

ID

Pipe Material

Stainless Steel

Connects To

Specifications Met

ANSI/FCI 70-2 Class IV

British Standard

Construction

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

REACH

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14,437 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Pipe and Fittings

Iron and Steel Threaded Pipe and Fittings

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Low-Pressure Iron and Steel Threaded Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

For pressures up to 300 psi

Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Pair with medium-pressure fittings; also known as Schedule 80

Extra-Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Extra-Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 160

High-Pressure Iron and Steel Threaded Pipe Fittings

High-Pressure Iron and Steel Threaded Pipe Fittings

Strong enough for pressures up to 6,000 psi

Medium-Pressure Iron and Steel Threaded Pipe Fittings

Medium-Pressure Iron and Steel Threaded Pipe Fittings

For pressures up to 2,000 psi

Low-Pressure Iron and Steel Threaded Pipe Flanges

Low-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 285 psi; also known as Class 150 flanges

Ultra-Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Ultra-Thick-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Our strongest threaded pipe for handling extreme pressures; also known as Schedule XXH

Quick-Tighten Low-Pressure Iron and Steel Threaded Pipe Fittings

Quick-Tighten Low-Pressure Iron and Steel Threaded Pipe Fittings

Tighten both ends at the same time by turning with a wrench

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Keep various lengths of low-pressure pipe nipples and pipe on hand

Quick-Tighten Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Quick-Tighten Standard-Wall Iron and Steel Threaded Pipe Nipples and Pipe

Tighten both ends at the same time by turning with a wrench; also known as Schedule 40

Extreme-Pressure Iron and Steel Threaded Pipe Flanges

Extreme-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in extreme-pressure lines; also known as Class 1500 flanges

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Fittings

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Fittings

Connect threaded pipe in fire water mains and sprinkler systems

Extreme-Pressure Iron and Steel Threaded Pipe Fittings

Extreme-Pressure Iron and Steel Threaded Pipe Fittings

Our strongest iron and steel threaded fittings withstand pressures up to 7,500 psi

High-Pressure Iron and Steel Threaded Pipe Flanges

High-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 1,400 psi; also known as Class 300 or Class 600 flanges

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

Add an access point to fire water mains and sprinkler systems

High-Pressure Iron and Steel Threaded Pipe Fitting Assortments

High-Pressure Iron and Steel Threaded Pipe Fitting Assortments

Keep various sizes of high-pressure caps and plugs on hand

Stainless Steel Threaded Pipe and Fittings

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Low-Pressure Stainless Steel Threaded Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

For pressures up to 500 psi

Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Thick-Wall Stainless Steel Threaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe with Sealant

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

High-Pressure Stainless Steel Threaded Pipe Fittings

High-Pressure Stainless Steel Threaded Pipe Fittings

Strong enough for pressures up to 3,000 psi

Medium-Pressure Stainless Steel Threaded Pipe Fittings

Medium-Pressure Stainless Steel Threaded Pipe Fittings

For pressures up to 1,000 psi

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings

The tightest tolerances of our stainless steel fittings; also called instrumentation fittings

Premium Low-Pressure Stainless Steel Threaded Pipe Fittings

Premium Low-Pressure Stainless Steel Threaded Pipe Fittings

Cast in the U.S. and include certificate with traceable lot number

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe Assortments

Standard-Wall Stainless Steel Threaded Pipe Nipples and Pipe Assortments

Keep multiple lengths of low-pressure pipe nipples and pipe on hand

Low-Pressure Stainless Steel Threaded Pipe Fittings with Sealant

Low-Pressure Stainless Steel Threaded Pipe Fittings with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Our strongest stainless steel threaded fittings withstand pressures as high as 15,000 psi

Low-Pressure Stainless Steel Threaded Pipe Flanges

Low-Pressure Stainless Steel Threaded Pipe Flanges

Create an access point in lines up to 290 psi; also known as Class 150 flanges

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

Less than two inches to fit in medium-pressure lines with limited space

Premium Medium-Pressure Stainless Steel Threaded Pipe Fittings

Premium Medium-Pressure Stainless Steel Threaded Pipe Fittings

Cast in the U.S. and include certificate with traceable lot number

High-Pressure Stainless Steel Threaded Pipe Flanges

High-Pressure Stainless Steel Threaded Pipe Flanges

Create an access point in lines up to 1,200 psi; also known as Class 300 or Class 600 flanges

Iron and Steel Unthreaded Pipe and Fittings

Standard-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Standard-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in low-pressure lines

Ultra-Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Ultra-Thick-Wall Iron and Steel Unthreaded Pipe Nipples and Pipe

Our strongest unthreaded pipe for handling extreme pressures; also known as Schedule XXH

Medium-Pressure Iron and Steel Butt-Weld Pipe Fittings

Medium-Pressure Iron and Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in medium-pressure lines

High-Pressure Iron and Steel Socket-Connect Pipe Fittings

High-Pressure Iron and Steel Socket-Connect Pipe Fittings

Easier to weld than butt-weld fittings and withstand pressures up to 3,000 psi

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in high-pressure lines

High-Pressure Iron and Steel Unthreaded Pipe Flanges

High-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 1,400 psi; also known as Class 300 or Class 600 flanges

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

Mate with flat-surface flanges, pumps, and valves to add an access point in fire-protection systems

Extreme-Pressure Iron and Steel Socket-Connect Pipe Fittings

Extreme-Pressure Iron and Steel Socket-Connect Pipe Fittings

Our strongest iron and steel unthreaded fittings withstand pressures up to 6,000 psi

Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

Extreme-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in extreme-pressure lines; also known as Class 1500 flanges

FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges

FM-Approved Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Add an access point to fire water mains and sprinkler systems

Galvanized Iron and Steel Threaded Pipe and Fittings

Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

For pressures up to 300 psi

Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Pair with medium-pressure fittings; also known as Schedule 80

High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

High-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Strong enough for pressures up to 3,000 psi

Quick-Tighten Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Quick-Tighten Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Tighten both ends at the same time by turning with a wrench

Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

Medium-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

For pressures up to 2,000 psi

Extra-Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Extra-Thick-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 160

Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Low-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 285 psi; also known as Class 150 flanges

Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Standard-Wall Galvanized Iron and Steel Threaded Pipe Nipples and Pipe Assortments

Keep multiple lengths of low-pressure pipe nipples and pipe on hand; also known as Schedule 40

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings with Sealant

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings with Sealant

Male threads have sealant applied for extra leak protection in low-pressure lines

High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

High-Pressure Galvanized Iron and Steel Threaded Pipe Flanges

Create an access point in high-pressure lines; also known as Class 300 flanges

Stainless Steel Unthreaded Pipe and Fittings

Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Pair with high-pressure fittings; also known as Schedule 80

Extra-Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

Extra-Thick-Wall Stainless Steel Unthreaded Pipe Nipples and Pipe

The strongest stainless steel pipe we offer for extreme pressures; also known as Schedule 160

High-Pressure Stainless Steel Socket-Connect Pipe Fittings

High-Pressure Stainless Steel Socket-Connect Pipe Fittings

Easier to weld than butt-weld fittings and withstand pressures up to 3,000 psi

High-Pressure Stainless Steel Butt-Weld Pipe Fittings

High-Pressure Stainless Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in lines up to 3,000 psi

High-Pressure Stainless Steel Unthreaded Pipe Flanges

High-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 1,200 psi; also known as Class 300 or Class 600 flanges

Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings

Extreme-Pressure Stainless Steel Socket-Connect Pipe Fittings

Our strongest stainless steel unthreaded fittings withstand pressures up to 7,700 psi

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

Brass and Bronze Threaded Pipe and Fittings

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe

Pair with low-pressure fittings; also known as Schedule 40

Low-Pressure Brass and Bronze Threaded Pipe Fittings

Low-Pressure Brass and Bronze Threaded Pipe Fittings

For pressures up to 300 psi

Medium-Pressure Brass and Bronze Threaded Pipe Fittings

Medium-Pressure Brass and Bronze Threaded Pipe Fittings

For pressures up to 700 psi

Precision High-Pressure Brass and Bronze Threaded Pipe Fittings

Precision High-Pressure Brass and Bronze Threaded Pipe Fittings

The tightest tolerances of our brass pipe fittings; also known as instrumentation fittings

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe for Drinking Water

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe for Drinking Water

NSF/ANSI rated for drinking water systems; also known as Schedule 40

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe Assortments for Drinking Water

Standard-Wall Brass and Bronze Threaded Pipe Nipples and Pipe Assortments for Drinking Water

Keep various lengths of NSF/ANSI-rated pipe on hand

Easy-Install High-Pressure Brass and Bronze Threaded Pipe Fittings

Easy-Install High-Pressure Brass and Bronze Threaded Pipe Fittings

Install and remove with a socket wrench or hex key

Low-Pressure Brass and Bronze Threaded Pipe Flanges

Low-Pressure Brass and Bronze Threaded Pipe Flanges

Create an access point in lines up to 225 psi; also known as Class 150 flanges

Brass and Bronze Unthreaded Pipe and Fittings

Standard-Wall Brass and Bronze Unthreaded Pipe Nipples and Pipe

Standard-Wall Brass and Bronze Unthreaded Pipe Nipples and Pipe

Braze to low-pressure pipe and fittings for a strong, leak-free connection; known as Schedule 40

Low-Pressure Brass and Bronze Braze-Socket Pipe Fittings

Low-Pressure Brass and Bronze Braze-Socket Pipe Fittings

Braze to pipe for a strong connection in lines up to 200 psi; also known as Silbraze fittings

Low-Pressure Brass and Bronze Unthreaded Pipe Flanges

Low-Pressure Brass and Bronze Unthreaded Pipe Flanges

Create an access point in lines up to 225 psi; also known as Silbraze flanges

Copper Threaded Pipe and Fittings

Low-Pressure Copper Threaded Pipe Fittings

Low-Pressure Copper Threaded Pipe Fittings

For pressures up to 200 psi

Other Products

Pipe Traps

Create a seal that prevents the backflow of gas

Hose

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

Tube Fittings

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

Manual On/Off Valves

Manual On/Off Valves

Start and stop flow through a line

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

Pipe Expansion Joints

Pipe Expansion Joints

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

Gauge Siphon Tubes

Gauge Siphon Tubes

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

Sights

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

Rotary Joints

Transfer air, water, oil, and steam from supply lines to continuously revolving drums and rollers

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Air-Actuated On/Off Valves

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

Motor-Actuated On/Off Valves

Motor-Actuated On/Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

Solenoid On/Off Valves

Solenoid On/Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

Orifice Valves

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

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