Seamless Metals | McMaster-Carr

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991 Products

About Stainless Steel

Determine if stainless steel is the right material for you and which types will work best.

About Metal Tubing

Multipurpose 304 Stainless Steel

From cookware to chemical-processing equipment, 304 stainless steel is a good all-around choice for a wide range of applications.

Polished Multipurpose 304 Stainless Steel

Polished to either a brushed or mirror-like finish, this material is often used to fabricate decorative enclosures and industrial workstations.

Corrosion-Resistant 316 Stainless Steel

The addition of molybdenum gives 316 stainless steel excellent corrosion resistance. Use it in a variety of marine and chemical-processing applications.

Tight-Tolerance Hardened 440C Stainless Steel

With a diameter that’s held to a close tolerance, this material is hardened for increased wear and abrasion resistance.

Metal Tubing for Flow

Smooth-Bore Seamless Stainless Steel Tubing

This tubing has a seamless construction with no weld bead for unrestricted flow and is stronger than welded tubing.

Extreme-Pressure Stainless Steel Tubing

This tubing is suitable for extreme-pressure applications reaching 15,000 psi—the highest pressure rating of all the tubing we offer.

Mil. Spec. Stainless Steel Tubing

A titanium additive gives this tubing excellent strength and superior corrosion resistance. It meets MIL-T-8808.

Extra-Hard Stainless Steel Tubing

Compared to other stainless steel tubing, this tubing is harder, stronger, and more durable.

Stainless Steel Tubing for Corrosive Gases

A thin layer of silicon on the interior provides a smooth surface and offers protection against corrosive gases.

Cleaned and Capped Stainless Steel Tubing

This tubing comes cleaned and capped to prevent moisture and dirt from contaminating the inside.

Extreme-Pressure Miniature Stainless Steel Tubing

This tubing withstands high pressures up to 13,700 psi. It is also known as capillary tubing.

High-Polish Stainless Steel Tubing
for Pharmaceuticals with Certification

This premium-grade tubing is polished to a 20 Ra or 15 Ra finish on the inside to reduce particle buildup and allow for easy cleaning.

General Purpose Aluminum Tubing

Aluminum tubing is lightweight with good corrosion resistance and weldability.

Easy-Bend Aluminum Tubing

Bend this tubing into the shape you need without special tools or elbow fittings.

Vacuum-Rated Large-Diameter Aluminum Tubing

Move bulk material, exhaust gas, or suck up dust in powerful vacuum systems—this tubing is large enough to transfer pellets and debris and strong enough to withstand nearly perfect vacuum. Made of aluminum, it’s lighter weight than steel tubing, so it’s best when you need to reduce the weight of your system. It also resists corrosion from frequent rinsing, humidity, and rain.

Ultra-Corrosion-Resistant Aluminum Tubing

Commonly used in marine applications, this tubing contains magnesium for extra corrosion resistance.

Mil. Spec. Aluminum Tubing

This tubing meets MIL-T-7081 standards.

General Purpose Copper Tubing

Copper tubing has good corrosion resistance and excellent heat transfer qualities.

Low-Pressure Copper Tubing for Drinking Water

This Type M tubing has the thinnest walls of all our copper tubing for drinking water. It withstands pressures up to 980 psi.

Medium-Pressure Copper Tubing for Drinking Water

This Type L tubing has thicker walls than Type M tubing. It withstands pressures up to 1,500 psi.

High-Pressure Copper Tubing for Drinking Water

This Type K tubing has the thickest walls of all our copper tubing for drinking water. It withstands pressures up to 1,900 psi.

Cleaned and Capped Copper Tubing

This tubing comes cleaned and capped to prevent moisture and dirt from contaminating the inside. It is also known as refrigeration and air conditioning tubing.

Copper Tubing with Coated Interior

The inside of this tubing is lined with 99% pure tin for added corrosion resistance.

Insulated Copper Tubing

Often used in heating and cooling systems, this tubing insulates refrigerant to efficiently transfer heat between components.

Copper Tubing with Coated
Exterior for Natural and LP Gas

This tubing has special markings to identify it as a gas line.

Smooth-Bore Seamless Steel Tubing

Seamless construction with no weld bead gives this tubing an interior with unrestricted flow. It can be flared without splitting.

Corrosion-Resistant Steel Tubing

A thin layer of zinc yellow-chromate gives this tubing extra corrosion resistance, making it an economical alternative to stainless steel.

Brass Tubing

A soft metal frequently used with air, gasoline, natural gas, propane, and plumbing applications. Tubing is not as corrosion resistant as stainless steel.

High-Temperature Nickel Tubing

This tubing can withstand temperatures up to 1200° F—the highest temperature rating of all the non-stainless steel tubing we offer. It is also known as Inconel.

Acid-Resistant Nickel Tubing

This tubing won't degrade, even when used with harsh acids. It is also known as Monel.

Super-Corrosion-Resistant Nickel Tubing

Run corrosive substances through this tubing without worrying about pitting and stress cracking. It is also known as Hastelloy.

High-Pressure Smooth-Bore
Seamless Titanium Tubing

Seamless construction with no weld bead gives this tubing an interior with unrestricted flow. It is stronger than welded tubing and can be flared without splitting.