How To Join Two Steel Pipes Without Welding

Are you tired of searching for skilled labor to weld your steel pipes? I bet you are because why else would you be here anyway? Well, folks, I have a piece of news for you. You can finally put that long-haul search to rest because I have bought you some inspiring alternative ways that will help you say goodbye to welding forever. But that does mean that welding is about to go extinct; it just means that you can use other easier and safer alternatives where possible.

Speaking from personal experience, I have always found welding a very scary task. The wayward electric sparks flying haywire sent goosebumps up and down my spine, and I couldn’t help but feel sorry for the people doing it, let alone doing it myself. That extreme terror led me to discover other welding-free options to join my own steel pipes. The information was readily available to my utter surprise, and I grabbed on the opportunity to learn as always.

All that research and grueling long hours I spent absorbing information from different platforms paid off, and now here I am, as always, with all my knowledge and expertise to share with you guys. I suggest that you read each and every alternative carefully and use the one that you like best. But whatever you do, I suggest that you do it carefully because every method holds its own risks, and only you are responsible for your safety. So now, without any more of your time, let’s dive into the details.

How To Join Two Steel Pipes Without Welding

1. Using Adhesives

One method that I prefer the most when joining steel pipes is using adhesives. It is the cheapest and safest alternative to welding. For this purpose, you can use Epoxies, Glues, and even Plastic agents. These adhesives contain bonding materials dissolved in a highly evaporative solvent. The mechanics behind this alternative is that when you apply a layer of adhesive to steel pipes, the solvent evaporates, leaving the bonding material to harden.

Using Adhesives

The hardening adhesive substances create strong bonds with the molecules of the steel pipes; the solvent present in the adhesives quickens this bond formation process. And when the solvent evaporates, the bonds become harder and harder until the two ends of the steel pipes are appropriately joined together. This whole process takes about twenty-four hours to complete. However, this method is not totally reliable because the glue can wear off after a certain time limit.

Moreover, adhesives are less likely to leave any sort of discoloration and corrosion on any kind of metal surface, while welding is not as immune to that. Besides, you won’t even have to clean up the metal surfaces as much as you would have to after you weld the metals. However, there are certain limitations associated with this method, such as it is slow and less reliable than welding.

2. Mechanical fastening

Mechanical fastening is yet another excellent but temporary alternative for joining two steel pipes without welding. In this method, a mechanical fastener with certified holding properties joins the pipes together, keeping them in a fixed position. These mechanical fasteners include bolts, nuts, and screws other than shrink fits, seams, and crimps. Using this method, you can join any material together but will require a certain level of expertise and knowledge with the fasteners.

Mechanical fastening

You will be required to adjust the screws and nuts in the proper place, and for this purpose, you might need professional help. However, if the pipes are already marked with the spots for fasteners, then you will be able to screw the nuts in place. But all things aside, the most significant benefit of mechanical fasteners is that you can save a lot of cost and time that you would otherwise have to spend on welding.

3. Soldering

The most significant difference between welding and soldering is that two or more metals are melted and fused together using high heat in welding. In other words, a mechanical connection is formed between the metals in welding, whereas soldering requires less heat, and an electrical connection is formed between the metals. As the name suggests, this method involves an alloy known as solder, which melts when placed on a hot surface.

Soldering

Solder is an alloy composed of approximately 99 percent tin and one percent of many other metals such as Zinc, Copper, silver, etc. This process is safer than welding on many different levels other than the fact that a lot less temperature is required for bonding the two ends of the steel pipes. However, the bond formed through soldering is much weaker than that created by welding, which is why you can only use soldering for smaller tasks.

4. Brazing

Brazing is considered to be the most suitable alternative to welding as it uses a high temperature to melt a filler metal that joins the two steel pipes together. This filler metal may be cobalt, nickel, or silver. These metals have a higher melting point than tin, so naturally, they use higher temperatures than soldering but not so much as required in welding. However, a mechanical bond is formed between the metals just like that formed in welding but a lot less robust. Also, have a look at the difference between brazing and welding.

Brazing

FAQs

Is it possible to join two steel pipes without welding?

Yes, it is absolutely possible to join two steel pipes without welding. There are specific simple ways in which you can do it, such as using glue, mechanical fastening, adhesive bonding, soldering, etc. It is up to you which method you choose, but whichever you choose, you must stick to it because the change of methods is more likely to weaken the bonding between the steel pipes. So the next time you have to weld your pipes, you will have other less expensive options to consider as well.

What is the most powerful adhesive that can connect two steel pipes without welding?

Although there are many adhesives that you can use to join steel pipes, Epoxy adhesives are considered the best among all others. This is because Epoxy adhesives consist of two parts, one is adhesive, and the other is the hardener. The combination of the two makes up to create the most powerful and most long-lasting bond ever. These Epoxy adhesives not only join steel pipes but are also very effective in sticking many other metals together or to a concrete surface.

What kind of glue works on steel?

There are certain adhesives that you can use to stick together two steel pipes which enable you to avoid costly and possibly dangerous welding procedures. These include Polyurethane, Epoxies, and Cyanoacrylate based adhesives. You are guaranteed a satisfying, long-lasting effect using all the above-stated adhesives; however, Epoxy adhesives are infamous for their most prolonged and powerful effect on metal surfaces. Besides, these adhesives are the most wear and weather resistant.

Can Gorilla glue be used to join two steel pipes?

Yes, you can use Gorilla glue to join your steel pipes. It has particularly very powerful adhesive capabilities that will stick your steel pipes like they were never apart. Other than that, it is water-resistant, which means that you can avoid the most severe problem of water leakage through the pipes using this adhesive. You can also use it to bind many other metals, ceramics, as well as metals to concrete. So, if you are looking for welding alternatives, then you must consider Gorilla glue.

How long does super glue take to dry on steel?

The time super glue takes to dry on steel depends upon environmental conditions as well as the amount used on the steel surface. For example, applying a thin layer of super glue on the steel and letting a fan dry it out will probably dry out much quicker than applying a thick layer and letting it dry out without a fan. But in any case, it should not take more than twenty-four hours to dry the super glue on the steel completely. The same goes for the superglue in the bottle; if exposed to air, it will dry out quickly.

Final Thoughts

Assuming that you read my article very carefully and found it as helpful as I felt writing it, you are now fully aware of all the best alternatives to welding. But let me give you a little disclaimer before you go ahead and select a technique for yourself. All these techniques have certain limitations, which can prove to be very disastrous if there are any misselections on your part. You must assess the strength of the joint and the bond you need to keep the two steel pipes together. The best selection would give the best possible results.

About Dave Walker

Dave Walker, a professional welder who has been welding from an early age. Now aims to help others by making them learning skills and finding them new opportunities. He has written for many welding blogs and helped many pursue their welding goals by helping them in choosing the best welding tools of the time.