What is ERW pipe?

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ERW stands for Electric Resistance welded pipe. A plate rolled to become a pipe and welded using Electric Resistance Welding process. Usully for for high diemeter. (cheapest process avaiable)

ERW tubing or Electric Resistance Welded tubing is not as strong as DOM tubing or Drawn Over Mandrel tubing. Usually when tube is made, it starts off as a flat sheet and this is rolled up into a tube and welded. DOM tubing is usually made the same way but there is an extra process where this tube is drawn through a die along with a mandrel to control the outer and inner diameters of the tube. This extra process strengthens the steel since it is cold formed by up to 20%. Another type of common tubing is Chrome-Moly also known as Chromium / Molybdenum Steel. This type of steel also uses the same process but has these additional elements within the steel alloy which increase strength even more. Chrome-Moly is usually used in tubing for cars and other applications over 3500 lbs.

Motorcycle Frames and ERW Steel Tubing...
Motorcycle frames are made with both ERW tubing and DOM tubing. For small engines with not a tremendous amount of horse power a 1" x 1/8" mild steel ERW tube should be fine. Modern engines with a lot more horsepower as well as stretched frames require at least 1 1/4" x 1/8" wall thickness at a minimum. Bigger choppers even use 1 3/8" x 1/8" walls. More on the overkill side done for design or aesthetics is 1 1/2" tube with 1/8" wall. All applications under 3500 lbs pretty much can get away with using ERW. Roll cages and dune buggies, car frames are almost always made with DOM tubing.

All three, Chrome-Moly, DOM and ERW tubing weigh about the same but it is important to note that Chrome-Moly is the strongest, followed by DOM and finally ERW being the weakest of the three. You can take advantage of this by replacing a larger diameter tube with a smaller diameter tube of stronger material. For example, you can replace a 1 1/2" ERW tube with a 1 1/8" DOM or Chrome-Moly tube.

The advantage here is that you can reduce your frame weight by making such a change. It is very critical to confirm that it is ok to make this kind of change on your frame. Each frame has a different geometry and different loads that will bend and twist the steel in various ways. Finite Element Analysis (FEA) conducted by a qualified engineer can provide you with correct tube diameters and wall thickness that can be replaced for your specific frame design.
ERW has the weld seam on the inside of the tube (see image above). DOM, although made the same way has the additional process of being drawing and the mandrel removes this seam and provides a nice smooth surface on the inside of the tube.

The image and diagram is courtesy of the fabricator.
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What are pipe standarts?

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What is seamless pipe?


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Length varies widely with regard to tribe and probably indevidual craftsman. Plains natives seem to make the longest - some more than 1 1/2 feet long. Some southwestern tribes made simple clay and soapstone pipes 3,4,5 inches long. Personally, I have made functional pipes 2 - 2 1/2 inches long.

Where can you buy a pipe?

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Difference between ERW and SAW welding?

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What is the difference of efw and erw?

EFW: Electric Fusion Welding is a more general term which includes Electric resistance welding (ERW) and other types of welding such as Arc welding.

What is difference between ERW and CRW Pipes?

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That big pipe on the bottom of your car with the cat and muffler on it, ends in a tail pipe, squirts pixie dust.

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What is ACR pipe?

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What is a Pipe Hitter?

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What is pipe fitting?

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What does a pipe foreman do?

A pipe Foreman's job is to get direction from his direct general foreman and to plan an execute the work in a safe and timely manner with a craftsman's pride makes sure conditions are safe and reasonable accessible material for the job to be done he should also already have lined up and ready.he has ( Full Answer )

How many pipes are on the pipe organ?

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What is water pipe?

A bong or a water pipe is a special pipe. When a person smokes with a bong, they pull the smoke through the water in it. This makes the smoke not as hot. Most often, either tobacco or cannabis are smoked with it

What is the Difference of erw and seamless pipes?

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What are DSS Pipes?

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How many pipes does pipe organ have?

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Can you carry on a pipe?

Interesting question. Yes you can...just say its your tobacco pipe.. ive told the police that one time and it worked... but I would COMPLETELY clean the bowl piece and insides the best you can. make sure theres no resin you can just scrape off of it. besides that, you cant get charged for possession ( Full Answer )

What is tuberculation in pipes?

The development or formation of small mounds of corrosion products on the inside of iron pipe. These tubercules roughen the inside of the pipe, increasing its resistance to water flow. (Source: EPA)

What is pipe fabricator?

a pipe fabricator would be a pipefitter that fabricates pipe in a shop or in the field.he/she does this with a welder and a helper.a number of power tools.he takes a set of iso drawings and cuts pipe to length and makes the fittings until he has fabricated what the drawing he has in his hand calls f ( Full Answer )

Difference between ERW and Seamless pipes?

ERW (Electric Resistance Welding) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired length; hence ERW pipe has a welded joint in its cross-section, while seamless pipe does not have any join ( Full Answer )

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It depends on the pipe your using.But most pipes are the same,all you have to do is hold the round part and light the open spot on the button of the pipe.

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The pipes which are used by plumbers for installation andmaintenance for the distribution of potable water for heating andwashing, water borne waste removal and drinking also. To know moreinformation visit at- alliedallcityinc.com.

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As I was best able to determine, it stands for "Material ofConstruction" in plumbing/engineering speak.

What is piping inspector?

piping inspection means checking pip line with rules and specification( according to P & ID drawing )all item included and completed 100 % proper line to plan

How do you remove pipe glue from pipe?

by gradually heating it ANS 2 - I have to do that sometimes wit both PVC and ABS glues . -I find the easiest quickest way is to sand it off with an electric sander.

What is invert of pipe?

The Invert Level of a pipe is the level taken from the bottom of the inside of the pipe as shown below. . INVERT LEVEL OF PIPE . Section through pipe. Water level. Invert level. Crown of pipe.

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What is sparger pipe?

simply put, a sparger pipe is a pipe designed to introduce gas into a liquid.

What is pipe spanner?

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Vent piping is a pipe that runs outside and is connected to the drain line of your home. this helps the water in the drain to move to your septic/sewer.

Which pipe used in concrete pipe?

A concrete mixture of sand, cement, and small gravel is used to make the concrete from which the tubular concrete pipe is made. The pipe is made of concrete.

Is DSAW a better weld than ERW?

Look back at the history of failures with ERW and it explainsitself. The liklihood of a failure is higher and the consequencesare enormous.

What movie and television projects has Manfred Erwe been in?

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