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Old March 9th, 2007, 09:38 PM   #41
Haggar
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Quote:
Originally Posted by free2blaze View Post
I bought my 12 ton bender at harbour freight for $69.00, I have built tube fenders for my jeep project so far, it works great.
If you don't have the springs on it (mine doesn't), keep it upright, don't lay it on its side. Otherwise, it'll take 1 million pumps to make a bend..
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Old March 9th, 2007, 11:32 PM   #42
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• Pipe is generally more rigid than tube, and is usually produced in heavier wall thicknesses.

• Pipe is specified by a nominal dimension which bears little or no resemblance to the actual dimensions of the pipe. 1" Schedule 40 pipe, for instance, has an actual OD of 1.32", a wall of 0.133", and an inner diameter of 1.049". Tube dimensions are actual dimensions.

• Pipe fittings are sized to meet pipe sizes, but not tube sizes. A 1" schedule 40 nipple will fit correctly on a 1" schedule 40 pipe, but not on a 1" OD tube.

Tube refers to round, square, rectangular or any shape of hollow material of uniform thickness which is defined by the outside diameter and wall thickness dimensions. It is the grade of the metals and how tube is produced and processed that is important.

• Structural Tube is generally produced using the ERW (Electric Resistance Welded) process. Identified under the Circular Hollow Section (CHS) or Hollow Structural Sections (HSS) class. Some steel mills specifically develop structural tube for roll over protective structures.

• Mechanical Tubing is usually produced as seamless, as-welded or DOM (Drawn Over Mandrel) tube.

Types of Tube and Pipe

Structural Tube - high strength welded steel tubing
Mechanical Tube - seamless, as-welded and drawn over mandrel
Stainless Tubing and Pipe - several seamless and welding processes requiring resistance to corrosive materials
Standard Pipe - several seamless or electric weld process, carries liquid or gas



What the acronyms mean:

Electric Resistance Welded (ERW)
Cold Drawn Welded (CDW)
Drawn Over Mandrel (DOM)
Cold Drawn Seamless (CDS)
Cold Rolled Electric Welded (CREW)
Hot Rolled Electric Welded (HREW)



Thier descriptions:

Electric Resistance Welded (ERW)
Cold formed, electric resistance welded tubing can be produced in round, square or rectangle shapes. ERW tube is produced by processing a flat rolled steel into strips which are cold-formed, welded and seam annealed or normalized (depending on the manufacturer). You can usually identify ERW tube by the blue strip down one side of the tube (which is the welded area). The ERW process can guarantee the weld to be as strong or stronger than the rest of the tube body. The origin from a flat strip results in a more concentric product than Cold Drawn Seamless (CDS). ERW can also be known as CREW (Cold Rolled Electric Welded).
Typical Applications:
Structural columns, beams, supports, heavy equipment frames with 58,000 PSI tensile.

Cold Drawn Welded (CDW)
Produced from a steel strip by cold forming, electric resistance welding (ERW) and cold drawing to finished dimensions, CDW is the most versatile and widely sold mechanical tubing grade. A variety of thermal treatments can be applied to alter the mechanical properties and machinability. CDW is used for a tremendous variety of machine parts where close tolerances and higher mechanical properties are needed.
Typical Applications:
Automotive components, shock absorbers, hydraulic cylinders, sleeves, bushings, axles and shafting.

Drawn Over Mandrel (DOM)
DOM is formed from strip and Electric Resistance Welded (ERW) then cold drawn through a die and over a mandrel resulting in improved inner surfaces and dimensional quality. This process, called cold drawing, may be repeated more than once to reach the planned OD, ID, or wall dimension. Multiple draws can also be used to increase the strength or improve the surface finish of the tubes. During the drawing operation, the tubes may be process annealed to increase the ductility of the material. Lower cost alternative to CDS with equal or superior physical properties.
Typical Applications:
Machined parts, rollers, shafts, sleeves, steering columns, axle tubes, drive shafts, bushings and is most readily adaptable in cylinder applications with a 80,000 PSI tensile.

Cold Drawn Seamless (CDS)
General purpose seamless tubing, which is a solid bar of carbon steel drawn over a mandrel to form the tube section. CDS allows selection of chemistry and rough tube size. Cold drawing produces higher physical properties without heat treating. Offers widest range of sizes and chemistries in mechanical tubing. Better tolerances and reduced machining allowances over Hot Finished Seamless (HFS).
Typical Applications:
Machined parts, bushings, spacers, bearings, rollers, shafts, sleeves and cylinders with a 75,000 PSI tensile.

Cold Rolled Electric Welded (CREW)
Cold rolled steels are steels that are shaped by high pressure rollers at normal temperature in the steel mill. Cold rolling work hardens the material substantially. The steel is then welded by the electric weld process. A cold rolled steel can be either a mild steel or a high carbon steel. Can also be termed as ERW (Electric Resistance Welded). See » ERW

Hot Rolled Electric Welded (HREW)
Hot rolled steel is steel that is rolled to size in the mill while red hot. Hot rolling steel does not work harden it as much as cold rolling. For this reason, hot rolled steel is more easily machined than cold rolled.

What's the difference between Tube and Pipe?
The general term for pipe was that it was primarily used for carrying gas or liquid. It was not intended for structural use because the dimensions used in describing pipe was not dimensionally accurate. Measurement was referred to its inside diameter and wall thickness. The inside diameter was a true dimension, but over the years had become "nominal" (in name only) so that when pipe size was referred to, it was an approximate inside diameter measurement with the thickness described by the term "schedule".
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Old March 9th, 2007, 11:38 PM   #43
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and that being said... here's whut u can do with sked 40 poop pipe:

everything is totally symetrical and strong as nails

Last edited by MayhemInc; October 7th, 2008 at 08:23 AM.
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Old March 11th, 2007, 04:16 PM   #44
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Quote:
Originally Posted by MayhemInc View Post
and that being said... here's whut u can do with sked 40 poop pipe:

everything is totally symetrical and strong as nails
Nice work It looks real good.
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Old March 13th, 2007, 08:15 PM   #45
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Quote:
Originally Posted by MayhemInc View Post
and that being said... here's whut u can do with sked 40 poop pipe:

everything is totally symetrical and strong as nails
Hey did you bend all that with a tube bender or something along the lines of a HF pipe bender?
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Old March 19th, 2007, 12:39 PM   #46
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Vary nice looking work, Same ?? as above, what type of bender did you use
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Old March 19th, 2007, 01:13 PM   #47
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9 times out of 10, someone using pipe is using the HF type bender in my first post.
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Old March 19th, 2007, 01:16 PM   #48
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If that is the case it's the same one I just bought. Hope to start buying pipe in the next few weeks to start some Learning projects..
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Old July 25th, 2007, 03:32 PM   #49
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I have a 16ton harbor freight bender; it'll be used to make our exocage on our grand.
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Old March 19th, 2008, 05:23 PM   #50
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Just wondering if 56 dollars for a 20 foot stick of pipe sounds about right these days.

I called Macomb Pipe in Burton just wondering about a general figure, and thats what they told me.

And its been around 2 years since most of you were talking in this thread. Any regrets using pipe instead of tube?
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Old March 26th, 2008, 06:35 PM   #51
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i called pontiac steel two weeks ago the 21 ft stick was 38.00
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Old March 27th, 2008, 06:38 AM   #52
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it is about 4.80 a foot for 1.75 .120 DOM right now
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Old March 27th, 2008, 06:46 AM   #53
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Quote:
Originally Posted by Rebel2345 View Post
Just wondering if 56 dollars for a 20 foot stick of pipe sounds about right these days.

I called Macomb Pipe in Burton just wondering about a general figure, and thats what they told me.

And its been around 2 years since most of you were talking in this thread. Any regrets using pipe instead of tube?
Some of the guys in our club use Hill Steel on Hill Rd @ US23
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Old April 5th, 2008, 12:24 AM   #54
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I'm confused. I'm just going to build a roll cage out of wood.
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Old May 29th, 2008, 09:47 PM   #55
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Quote:
Originally Posted by phittie1100 View Post
Some of the guys in our club use Hill Steel on Hill Rd @ US23
theyre great for small stuff but if you're anything over 2 sticks id go to pontiac steel..
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Old December 10th, 2008, 12:40 PM   #56
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Up until last week all we had to talk about was poop pipe, tube, harbor freight kinkers, etc. Thanks to nite crawler, we now have a new cage material to discuss: tramp tube

Thanks buddy.



(trampoline parts)
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Old December 27th, 2008, 07:08 AM   #57
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If you use an old kids Trampoline for part's, the 90's are bent already. On one of my mud drag Runs ,the motor shut down 50 feet in. A 625 draged me 150' thru 3 foot deep MUD hooked to the passenger front tube.
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Old December 27th, 2008, 01:49 PM   #58
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Quote:
Originally Posted by nite crawler View Post
If you use an old kids Trampoline for part's, the 90's are bent already. On one of my mud drag Runs ,the motor shut down 50 feet in. A 625 draged me 150' thru 3 foot deep MUD hooked to the passenger front tube.
Are you Fing serious?
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Old December 28th, 2008, 06:31 AM   #59
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Just becuase something worked doesn't mean that its a good idea.
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Old December 28th, 2008, 06:37 AM   #60
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Wood roll cages are better.
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