4-inch Schedule 80 Steel Pipe Bollards

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Light Duty Bollard: Not to be used to stop vehicles.

4-inch Schedule 80 Steel Pipe Bollards have a 0.337″ thick wall and can be used for non-critical, light duty bollard applications. Smaller pipe sizes like this should only serve to delineate, to hold signage or chains or as protection from light machinery impacts. If impacted with an ecomony car at 5 mph, the pipe will easily shear or bend and pull up and tilt the footing. These should be considered light duty bollards.

At only 119 lbs for an 8-footer, they can easily be set into place with a single worker by hand.


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  • might be used as protection for objects or building corners from collision by light weight machinery at best.
  • can be used as visual cues to drivers for traffic control where, if omitted by collsion, does not present greater problems than if it did not exist.
  • is often used to hold non-critical signage like “reserved parking” for instance; not to hold stop signs for instance.
  • may be used as stanchions for crowd control or queue line.
  • might be used as fixed immobile delineators.
  • may be cut tall (60″, 72″) tall to hold signage high.
  • SHOULD NOT be used to protect people, or anything else for that matter, from vehicle impacts, even at low speeds.
  • SHOULD NOT be used as a barricade or for building entrance protection.

AS A BARRICADE: Not advisable. At minumum, use a 6-inch Schedule 40 pipe or maybe the 5″ Schedule 80 pipe. To have more certainty in a barrier’s stopping force, it is advised to use an impact-rated bollard system such as the C40, K4 or K12.

VARIETIES: ASTM A500 Carbon Steel Pipe is the common go-to choice for bollards. Although, it is sometimes sufficient to use a structural grade untested pipe. Of course, we also offer pipe that meets various prescribed ASTM and ASME standards. See “Pipe Varieties” below.


Name: 4″ SCH80 Steel Pipe
Nominal Size: 4″
Wall Thickness: 0.337″
Inner Diameter (ID): 3.826″
Outer Diameter (OD): 4.5″
Circumference: 14.14″ (approx 14 1/8″)
Weight: 14.9 lbs/ft
Default Grade: ASTM A500 Grade A
Finishes: Bare Steel, Primed, Galvanized
Primer Colors: Red Oxide, Yellow & Gray


Minimum Pier Footing Diameter: 12″
Auger Size: 12″
Install Depth: 36″ – 48″ Typical
Install Height: 36″ – 48″ Typical
Bollard Pipe Lengths Available: 6.5′, 7′, 7.5′, 8′ and more
7′ Weight: 104.3 lbs
8′ Weight: 119.2 lbs
Concrete: Volume for 12″ Diameter, 36″ Deep Footing + Pipe Fill is  0.09 Yards
System Weight: 12″ Dia. x 36″ deep concrete pier and 8′ bollard is approx. 480 lbs


Confused about "Schedule" or "Standard" wall thicknesses? See this short article.


This Pipe may be available in the following types and grades:

Electric resistance weld (ERW), seamless (SMLS), and double submerged arc weld (DSAW) in all published schedules and walls, Grades ASTM A-500 GR A & GR B, ASTM A-53 GR B, ASME SA-53 GR B, ASTM A-106 GR B, ASME SA-106 GR B, AP1 5L X-GRADES, ASTM A-252 GR 1, 2, AND 3, ASTM A-139 GR B, and ASTM A-501.


This pipe may also be available as untested pipe without an ASTM rating. It is then referred to by Diameter and Wall Thickness only; no Schedule #, Standard, XH or XXH etc. Untested pipe can be much cheaper, and is often perfectly fine for bollard applications since the testing is really about pressure testing; how much PSI the pipe can withstand when filled with a pressurized liquid or gas. Bollards are just filled with concrete, so PSI ratings are generally not applicable. Their may be a small or negligable weakness in terms of bollard strength associated with untested pipe.


See bottom of page for all of our pipe sizes and wall thicknesses. We offer 1/8" to 36" Diameters and walls from SCH 5 to SCH 160 XH Extra Heavy and XXH Double Extra Heavy.


We find the best total pipe and freight price based on your delivery location. Our pipe is freighted out of Minnesota, Illinois, Michigan, New Jersey, & Texas.


Read our thorough guide on How To Install In-Ground Bollards. Complete with pictures, links and lists of materials, equipment and tools, these step-by-step instructions will help anyone installing bollards.


Answer some questions below on our Bollard Pipe Quote Request Form and you'll get a quote back from us the same or next day. The shipping destination helps us give you the BEST QUOTE by calculating the freight cost.

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We ship pipe from coast to coast


Bollard Pipe Quote Request

Bollard Pipe Quote Request

Get a quote on Bollard Pipe from St. Paul Sign.

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A minimum of 4 is required.
Alert: Galvanized does not hold paint worth a darn because it's acts like a non-stick frying pan, so don't choose galvanized if you are hoping to paint pipe. Leave galvanized be, or cover it with a bollard cover, don't paint it!
Structural ASTM A500 Grade A is often typical. Untested and Rejected pipe doesn't necessarily meet fluid pressure tests, but is usually OK for bollard applications that aren't critical.
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Bollard Cover type may not be available in certain sizes. We will make our best guess if that's the case.
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You must have a way to receive delivery. Trucks don't usually come with a fork and pipe has to be forked from the side of truck. Smaller pipe under 150 lbs can be offloaded by hand, but the driver may not be happy about it. Note: "Forks" is short for forklift, Lull, Track Loader with forks, Skid Steer with forks etc.
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All Pipe Sizes Available

Below we have a chart of pipe sizes that are available for quote.

Dowload this Pipe Size Chart in a PDF