Weld-Socket Pipe Fittings

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2,066 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.

Stainless Steel Unthreaded Pipe and Pipe Fittings

Low-Pressure Socket-Connect Stainless
Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slip the pipe into the socket and weld.

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Bolt two same-size flanges together with a gasket to create an access point within a pipe line.

Standard-Wall Stainless Steel
Unthreaded Pipe Nipples and Pipe

Typically used with standard-wall and low-pressure stainless steel unthreaded pipe fittings.

Thin-Wall Stainless Steel
Unthreaded Pipe Nipples and Pipe

Typically used with thin-wall stainless steel unthreaded pipe fittings.

High-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slip the pipe into the socket and weld.

Thick-Wall Stainless Steel Unthreaded Pipe

Typically used with thick-wall and high-pressure stainless steel unthreaded pipe fittings.

High-Pressure Stainless Steel
Unthreaded Pipe Flanges

Use these heavy duty forged flanges for high-pressure applications.

High-Pressure Stainless Steel
Unthreaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

Extreme-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

The strongest socket-connect fittings we offer, these heavy duty forged fittings are also known as Pressure Class 6000.

Extra-Thick-Wall Stainless Steel Unthreaded Pipe

Typically used with extreme-pressure stainless steel unthreaded pipe fittings.

Iron and Steel Pipe and Pipe Fittings

Standard-Wall Steel Threaded
Pipe Nipples and Pipe

Also known as Schedule 40, this steel pipe is designed for low-pressure applications.

Thick-Wall Steel Threaded Pipe Nipples and Pipe

Typically used with medium-pressure iron and steel threaded pipe fittings. Also known as Schedule 80.

Super-Thick-Wall Steel
Threaded Pipe Nipples and Pipe

Typically used with extreme-pressure iron and steel threaded pipe fittings. Also known as Schedule XXH.

Low-Pressure Steel Unthreaded Pipe Flanges

Bolt two flanges of the same size together with a gasket to create an access point in a pipe line.

Standard-Wall Steel Unthreaded
Pipe Nipples and Pipe

Typically used with standard-wall and low-pressure iron and steel unthreaded pipe fittings. Also known as Schedule 40.

Low-Pressure Steel Unthreaded
Pipe Flanges for Low Temperatures

Even in temperatures as low as -46°, these A350 LF2 steel flanges won’t become brittle, so they absorb impact better than other low-pressure steel flanges.

High-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slide the pipe into the socket and weld.

High-Pressure Steel Unthreaded Pipe Flanges

Forged for extra strength, these heavy duty unthreaded flanges can withstand high-pressure applications.

High-Pressure Steel Unthreaded SAE Pipe Flanges

Also known as Code 61 SAE hydraulic flanges.

Thick-Wall Steel Unthreaded Pipe Nipples and Pipe

Typically used with thick-wall and high-pressure iron and steel unthreaded pipe fittings. Also known as Schedule 80.

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Also known as Pressure Class 6000 fittings, these heavy duty forged fittings are the strongest steel fittings we offer.

Super-Thick-Wall Steel Unthreaded Pipe

Typically used with extreme-pressure iron and steel unthreaded pipe fittings. Pipe is also known as Schedule XXH .

Extreme-Pressure Steel Unthreaded Pipe Flanges

For excellent strength in extreme-pressure applications, choose these heavy duty Pressure Class 1500 flanges.

Standard-Wall Grooved-End
Steel Pipe Nipples and Pipe

This steel pipe has grooved ends that connect to fittings with a clamp (sold separately) for an easy way to install piping systems.

Aluminum Unthreaded Pipe and Pipe Fittings

Standard-Wall Aluminum
Unthreaded Pipe Nipples and Pipe

Typically used with standard-wall aluminum unthreaded pipe fittings.

Thin-Wall Socket-Connect
Aluminum Unthreaded Pipe Fittings

Socket-connect fittings are easier to weld than butt-weld fittings because the fitting doesn't need to align perfectly to the pipe. Slip the pipe into the socket and weld.

Thin-Wall Aluminum Unthreaded
Pipe Nipples and Pipe

Typically used with thin-wall aluminum unthreaded pipe fittings.

Thick-Wall Aluminum Unthreaded
Pipe Nipples and Pipe

Typically used with thick-wall aluminum unthreaded pipe fittings.

Copper-Nickel Unthreaded Pipe

Also known as Pressure Class 200 pipe.

Plastic Pipe and Pipe Fittings for Chemicals

UV-Resistant Polypropylene Pipe for Chemicals

This polypropylene pipe resists the damaging effects of ultraviolet light, so it’s suitable for outdoor use. It has the chemical resistance to withstand acids, solvents, and other harsh substances.

High-Purity Polypropylene Pipe
Fittings for Corrosive Chemicals

The inside of these fittings won’t leach contaminants into your line or accumulate particles—they’re polished to an ultra-smooth 12 Ra finish, which also makes it easy to clean. Made of polypropylene, they resist organic solvents, acids, and alkalis better than CPVC fittings.

High-Purity Polypropylene Pipe
Flanges for Corrosive Chemicals

The inside of these flanges won’t leach contaminants into your line or accumulate particles—they’re polished to an ultra-smooth 12 Ra finish, which also makes them easy to clean. Made of polypropylene, they resist organic solvents, acids, and alkalis better than CPVC pipe flanges.

High-Purity Polypropylene
Pipe for Corrosive Chemicals

The inside of this pipe won’t leach contaminants into your line or accumulate particles—it’s polished to an ultra-smooth 12 Ra finish, which also makes it easy to clean. Made of polypropylene, it resists organic solvents, acids, and alkalis better than CPVC pipe.

High-Purity PVDF Pipe Fittings
for Corrosive Chemicals

Made of PVDF that’s finished to a 12 Ra smoothness, these fittings handle some of the harshest chemicals without leaching contaminants into your line. Comparable to Kynar, they handle most organic solvents that would dissolve CPVC, and chlorine or nitric acid that would weaken polypropylene.

High-Purity PVDF Pipe for Corrosive Chemicals

Made of PVDF that’s finished to a 12 Ra smoothness, this pipe handles some of the harshest chemicals without leaching contaminants into your line.

Tube Fittings for Stainless Steel Tubing

High-Pressure Socket-Connect
Fittings for Stainless Steel Tubing

Use at pressures up to 4,300 psi.

Claw-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

An alternative to bolt-together fittings, these fittings handle larger tube OD sizes than quick-clamp fittings. Also known as ISO-K high-vacuum fittings, the clamps have claws that grab hold of fittings with flanged ends.

Bolt-Together High-Vacuum
Fittings for Stainless Steel Tubing

For high-vacuum systems with tube sizes too large for quick-clamp (KF) fittings, choose these bolt-together fittings.

Metal Cam-and-Groove Hose Couplings for Chemicals and Petroleum

Metal Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

Couplings are metal, which has better durability than plastic cam-and-groove hose couplings. They consist of a plug and a socket that connect and disconnect quickly. Use them if you need frequent access to a line. To connect, insert the plug into the socket and push the levers down.

On/Off Valves

Socket-Connect On/Off Valves for Fuel

Install these valves to start and stop the flow of diesel fuel, fuel oil, kerosene, and gasoline. Fire-tested to meet American Petroleum Institute (API) 607, these valves are designed to securely isolate fluid and prevent the spread of fire. Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection.

Socket-Connect On/Off Valves for Cryogenic Liquids

Designed to withstand extremely cold liquid gases, these valves are ideal for liquid nitrogen cooling systems and liquified gas storage. Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection.

Motor-Driven On/Off Valves with
Socket-Connect Fittings for Drinking Water

Insert unthreaded pipe into the socket ends and bond with PVC primer and cement to create a permanent, leak-tight connection.

Stainless Steel Unthreaded Pipe and Pipe Fittings

Low-Pressure Socket-Connect StainlessSteel Unthreaded Pipe Fittings

Low-Pressure Stainless SteelUnthreaded Pipe Flanges

Standard-Wall Stainless SteelUnthreaded Pipe Nipples and Pipe

Thin-Wall Stainless SteelUnthreaded Pipe Nipples and Pipe

High-Pressure Socket-ConnectStainless Steel Unthreaded Pipe Fittings

Thick-Wall Stainless Steel Unthreaded Pipe

High-Pressure Stainless SteelUnthreaded Pipe Flanges

High-Pressure Stainless SteelUnthreaded SAE Pipe Flanges

Extreme-Pressure Socket-ConnectStainless Steel Unthreaded Pipe Fittings

Extra-Thick-Wall Stainless Steel Unthreaded Pipe

Iron and Steel Pipe and Pipe Fittings

Standard-Wall Steel ThreadedPipe Nipples and Pipe

Thick-Wall Steel Threaded Pipe Nipples and Pipe

Super-Thick-Wall SteelThreaded Pipe Nipples and Pipe

Low-Pressure Steel Unthreaded Pipe Flanges

Standard-Wall Steel UnthreadedPipe Nipples and Pipe

Low-Pressure Steel UnthreadedPipe Flanges for Low Temperatures

High-Pressure Socket-ConnectSteel Unthreaded Pipe Fittings

High-Pressure Steel Unthreaded Pipe Flanges

High-Pressure Steel Unthreaded SAE Pipe Flanges

Thick-Wall Steel Unthreaded Pipe Nipples and Pipe

Extreme-Pressure Socket-ConnectSteel Unthreaded Pipe Fittings

Super-Thick-Wall Steel Unthreaded Pipe

Extreme-Pressure Steel Unthreaded Pipe Flanges

Standard-Wall Grooved-EndSteel Pipe Nipples and Pipe

Aluminum Unthreaded Pipe and Pipe Fittings

Standard-Wall AluminumUnthreaded Pipe Nipples and Pipe

Thin-Wall Socket-ConnectAluminum Unthreaded Pipe Fittings

Thin-Wall Aluminum UnthreadedPipe Nipples and Pipe

Thick-Wall Aluminum UnthreadedPipe Nipples and Pipe

Copper-Nickel Unthreaded Pipe

Copper-Nickel Unthreaded Pipe

Plastic Pipe and Pipe Fittings for Chemicals

UV-Resistant Polypropylene Pipe for Chemicals

High-Purity Polypropylene PipeFittings for Corrosive Chemicals

High-Purity Polypropylene PipeFlanges for Corrosive Chemicals

High-Purity PolypropylenePipe for Corrosive Chemicals

High-Purity PVDF Pipe Fittingsfor Corrosive Chemicals

High-Purity PVDF Pipe for Corrosive Chemicals

Tube Fittings for Stainless Steel Tubing

High-Pressure Socket-ConnectFittings for Stainless Steel Tubing

Claw-Clamp High-VacuumFittings for Stainless Steel Tubing

Bolt-Together High-VacuumFittings for Stainless Steel Tubing

Metal Cam-and-Groove Hose Couplings for Chemicals and Petroleum

Metal Cam-and-Groove HoseCouplings for Chemicals and Petroleum

On/Off Valves

Socket-Connect On/Off Valves for Fuel

Socket-Connect On/Off Valves for Cryogenic Liquids

Motor-Driven On/Off Valves withSocket-Connect Fittings for Drinking Water

Low-Pressure Socket-Connect Stainless
Steel Unthreaded Pipe Fittings

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Standard-Wall Stainless Steel
Unthreaded Pipe Nipples and Pipe

Thin-Wall Stainless Steel
Unthreaded Pipe Nipples and Pipe

High-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

High-Pressure Stainless Steel
Unthreaded Pipe Flanges

High-Pressure Stainless Steel
Unthreaded SAE Pipe Flanges

Extreme-Pressure Socket-Connect
Stainless Steel Unthreaded Pipe Fittings

Standard-Wall Steel Threaded
Pipe Nipples and Pipe

Super-Thick-Wall Steel
Threaded Pipe Nipples and Pipe

Standard-Wall Steel Unthreaded
Pipe Nipples and Pipe

Low-Pressure Steel Unthreaded
Pipe Flanges for Low Temperatures

High-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Extreme-Pressure Socket-Connect
Steel Unthreaded Pipe Fittings

Standard-Wall Grooved-End
Steel Pipe Nipples and Pipe

Standard-Wall Aluminum
Unthreaded Pipe Nipples and Pipe

Thin-Wall Socket-Connect
Aluminum Unthreaded Pipe Fittings

Thin-Wall Aluminum Unthreaded
Pipe Nipples and Pipe

Thick-Wall Aluminum Unthreaded
Pipe Nipples and Pipe

High-Purity Polypropylene Pipe
Fittings for Corrosive Chemicals

High-Purity Polypropylene Pipe
Flanges for Corrosive Chemicals

High-Purity Polypropylene
Pipe for Corrosive Chemicals

High-Purity PVDF Pipe Fittings
for Corrosive Chemicals

High-Pressure Socket-Connect
Fittings for Stainless Steel Tubing

Claw-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Bolt-Together High-Vacuum
Fittings for Stainless Steel Tubing

Metal Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

Motor-Driven On/Off Valves with
Socket-Connect Fittings for Drinking Water