Soldering Copper

What Are Wrought Copper Fittings? Let's Break It Down

So, you've probably heard the term "wrought copper fittings" thrown around at plumbing supply stores or maybe even on job sites. Sounds a bit high-tech, right? But what’s the real deal here?

Let’s simplify it and get right to the point—Plumb-style.

What Exactly Are Wrought Copper Fittings?
Wrought copper fittings are these seamless, factory-made connectors that you use to join copper pipes in your plumbing setup. The term "wrought" just means that the copper has been worked on—pressed, rolled, and shaped using some heavy-duty machinery.

In simpler words: it’s copper shaped into things like elbows, tees, and couplings—not just melted and poured like you would with cast fittings.

What Sets Them Apart from Cast Fittings?
Let’s do a quick comparison, shall we?

When it comes to choosing the right copper fittings for your plumbing system, understanding the difference between wrought copper fittings and cast fittings (such as brass or bronze)

Ever hear the term capillary fitting and wonder if it had something to do with blood vessels? Don’t worry—it’s strictly plumbing. But it does involve a tight connection. Let’s talk about copper capillary fittings and why they’ve stood the test of time.

 
What Are Copper Capillary Fittings?
Copper capillary fittings are soldered pipe connectors that rely on a process called capillary action. That’s when molten solder flows into the narrow gap between the fitting and the pipe by surface tension.

Here’s how it works:

Heat the joint
Apply solder to the edge
The solder is drawn into the joint, creating a sealed connection
It’s a strong, watertight bond—no screws, clamps, or compression needed.

What Makes a Fitting “Capillary”?
The design is what makes these fittings so effective:

The fitting has an internal socket slightly larger than the pipe
When heated, this tight gap allows solder to flow in naturally
The result is a clean, compact, and permanent joint
Capillary fittings are also called

Hiya, it’s Plumb—your favorite plumbing mascot with a heart of gold and a toolkit full of wisdom. Today, we’re diving into a classic plumbing essential: copper fittings. Whether you're a seasoned pro or a first-time fixer-upper, this one's for you.

So, what are copper fittings? Let’s start with the basics.

What Exactly Are Copper Fittings?
Copper fittings are the connectors used to join pieces of copper pipe together in a plumbing system. They're the elbows, tees, couplings, and adapters that help your water go where it's supposed to—without leaks or drama.

They're made from copper, a metal known for its strength, corrosion resistance, and ability to carry hot and cold water safely.

Think of copper fittings as the joints in a skeleton: they let everything bend, turn, and flow naturally.

What Types of Copper Fittings Are There?
Copper fittings come in many shapes and sizes. Here are the most common ones:

Elbows – Change direction (usually 45 or 90 degrees)

Tees – Split flow into three directions

Copper fittings are typically made from a type of copper alloy, which means they’re almost entirely copper with small amounts of other elements mixed in.

Why? Because pure copper is too soft to handle the pressure of your plumbing system.

 
What Are Copper Fittings Made Of?

Most plumbing copper fittings are made from deoxidized high phosphorus copper C12200. That’s about 99.9 percent copper with just a touch of phosphorus. This improves weldability and corrosion resistance.

Strong enough to withstand water pressure
Flexible enough to shape and join easily
Resistant to corrosion and scaling
You might also hear about:

Type L or M copper used in pipes Type L is thicker
Wrought copper used in elbows, tees, and couplings
So no, you’re not getting 24 karat jewelry level purity, but you are getting fittings built to last decades.

 
Why Not Use 100 Percent Pure Copper?
Pure copper is soft. Really soft. That makes it great for sculptures and wires but not so great for fittings under pressure.

Adding