Joining Two Steel Pipes

In each description we will list the different plumbing systems and which pipe joining methods apply and finally the benefits and drawbacks of each.

Joining two steel pipes.

Lines of 2 inch or larger are usually butt welded this being the most economic leak proof method. This is probably one of the easiest methods of joining pieces of metal or anything together. It is important to know the type of coupling to use for galvanized pipe and the fitting procedure so the pipe is leak free. Start by liberally coating the threads of the pipe with pipe dope or wrapping the threads with ptfe tape.

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. Screw both sections of pipe into their respective fittings. 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. The union nuts attach to the replacement sections of pipe where they join together. The union is a fitting that consists of three components. Coat all threaded pipe connections with pipe thread compound before assembly.

Two union nuts and a ring nut. 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. Even though push fittings are easy you still have to do your homework. Connecting together galvanized pipes that are non threaded uses a coupling that creates a sealed joint.

Smaller lines are usually joined by socket welding or screwing. 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. Pipe joining methods soldered this is the process of joining pipe by melting a filler metal with a low melting point into a joint.

Joining galvanized iron fittings to galvanized steel pipe requires pipe dope or ptfe tape and two pipe wrenches. Read down below to find out how to join two pieces of metal without welding. Push fittings haven t been around all that long but they are without a doubt the easiest way to join two pipes. There are numerous methods for joining metals without welding.

Insert the ring nut over one of the sections of pipe. The valve shown has 1 2 in. The photo shows how to use common plumbing parts to join a new ball valve and a flexible stainless steel connector to steel pipe.