Joining Two Steel Pipes

Read down below to find out how to join two pieces of metal without welding.

Joining two steel pipes.

The valve shown has 1 2 in. Even though push fittings are easy you still have to do your homework. Coat all threaded pipe connections with pipe thread compound before assembly. Pipe joining methods soldered this is the process of joining pipe by melting a filler metal with a low melting point into a joint.

Push fittings haven t been around all that long but they are without a doubt the easiest way to join two pipes. There are three main methods of joining pipes together and attaching fittings to them. When the filler metal cools it bonds the two pieces of metal. Lines of 2 inch or larger are usually butt welded this being the most economic leak proof method.

It is important to know the type of coupling to use for galvanized pipe and the fitting procedure so the pipe is leak free. Two union nuts and a ring nut. The ring nut acts to join the two pieces. The union is a fitting that consists of three components.

Committee of stainless steel producers american iron and steel institute 1133 15th street nw washington dc 20005 u s a in co operation with asm international formerly american society of metals metals park oh 44073 u s a. There are numerous methods for joining metals without welding. The photo shows how to use common plumbing parts to join a new ball valve and a flexible stainless steel connector to steel pipe. In each description we will list the different plumbing systems and which pipe joining methods apply and finally the benefits and drawbacks of each.

Subsequent to the symposium asm international published a book joining of stainless steels. Female gas pipe threads on both sides. Some of these alternatives to welding methods require heat while some don t require heat at all. Make sure the pipe joint compound or tape go into the threads to ensure a water tight connection.

Galvanized pipe has a zinc coating that is either rough or smooth depending on the type of zinc and steel heating process. This is probably one of the easiest methods of joining pieces of metal or anything together. Joining galvanized iron fittings to galvanized steel pipe requires pipe dope or ptfe tape and two pipe wrenches. Smaller lines are usually joined by socket welding or screwing.

Read the instructions on the type of fitting you re using to see how far the pipe needs to be inserted and make a mark on the pipe at that length to ensure. The union nuts attach to the replacement sections of pipe where they join together. Insert the ring nut over one of the sections of pipe.