As per our Shipping and Returns Policy, custom cuts and fabricated parts are non-returnable. If you need an over- or undersized item, note it under "Comments" during Checkout. Cut-to-size orders have an acceptable cut tolerance of 1/8" (0.125"), so clarify if the adjustment is to be made on the (+) or (-) side of the saw blade.Please review our full return and shipping policy here.
Measure Twice, Cut Once
Since custom cuts and fabricated parts are non-refundable, be very careful while measuring your dimensions. As each cut is nominal, even the slightest miscalculation could be costly.
How to Use a Measuring Tape
Extend your tape measure several inches to find the 1 and 2 inch markers. In between the inch markers you’ll find 16 equally spaced tick marks.
Measure by counting the increments beyond the nearest inch. As the increments decrease, so does the length of the mark. For example, 1/2" has a bigger mark than 1/4" which has a bigger mark than 1/8". The smallest mark follows at 1/16". Please be aware that some measuring tapes may have even smaller increments.
Features of a Measuring Tape: Sliding End Hook
The sliding end hook is designed for two different types of measurements. An outside measurement (where the hook of the tape hangs over an edge), requires the hook to slide out a bit to account for the thickness of the material. When making an inside measurement (where the hook will push up against a surface), the clip slides in, again, accounting for its thickness. The measuring tape self-adjusts to guarantee an accurate measurement (as far as the tape is concerned).
Sanitizing Acrylic and Polycarbonate Sheet [X]
Acrylic and Polycarbonate Sneeze Guards and like products require special care while cleaning and disinfecting. To maintain the optical clarity of sneeze guards and other acrylic or polycarbonate items, use an acrylic or polycarbonate safe cleaner like Novus Plastic Polish #1, Brillianize Plastic Cleaner, or a mild soap solution.
Please reference the following compatible cleaners when DISINFECTING acrylic and polycarbonate items. The use of commonly available commercial alcohol or ammonia-based disinfectants may cause crazing and damage.
Durable Black Pipe Grade HDPE for Outdoor & Piping Applications
Pipe Grade Black HDPE sheet is a machinable thermoplastic engineered for applications that require a high strength-to-density ratio, long-term durability, and light weight.
This material offers greater impact resistance than standard HDPE and features improved performance in many piping applications. This material's excellent chemical resistance and UV stabilization makes it a popular choice for intensive or demanding outdoor environments.
Note on Surface Finish: This is an unmasked, industrial-grade plastic sheet. Minor scuffs and handling marks are normal and do not affect material performance. If you require a matte-textured cosmetic finish for visible boat cabinetry or finished marine components, explore King StarBoard®.
Looking for standard HDPE or food-contact options? We stock Natural HDPE for FDA-compliant environments and standard Black HDPE for general fabrication.
Why Choose Pipe Grade HDPE?
This grade is designed to handle outdoor and pipe-related applications. It is the correct choice if you need:
UV Stability:
Carbon-black stabilization helps prevent ultraviolet degradation during prolonged outdoor exposure.
Chemical Resistance:
Resists corrosive acids, alkalis, with improved stress-crack resistance compared with general-purpose HDPE.
Excellent Weldability:
Strong thermoplastic welding characteristics support fabricated parts such as tanks, fittings, flanges, and welded assemblies.
Low Moisture Absorption:
Very low moisture absorption limits dimensional changes in wet, submerged, or trenching environments.
High Strength-to-Density Ratio:
Delivers lightweight durability and high impact resistance for structural components.
Pipe Grade HDPE vs. Standard HDPE
While both share a polyethylene base, Pipe Grade is UV stabilized and features enhanced impact resistance.
Choose Pipe Grade HDPE (This Sheet) if your application needs pipe-grade performance, UV stability, greater impact resistance than standard HDPE, or fabrication of HDPE pipe-related components.
Choose Standard Black HDPE for general industrial, fabrication, or dirty work environments where pipe-grade classification or piping-system compatibility is not required.
Fabrication & Machining
Pipe Grade HDPE can be sawed, routed, drilled, and machined using sharp carbide-tipped tooling and appropriate chip clearance. Polyethylene expands with heat and can move under sustained stress - control heat buildup and allow for dimensional change when tolerances are critical. Conventional adhesives generally provide poor bonding; parts are normally mechanically fastened or heat welded.
Material Warnings
WARNING: This product can expose you to chemicals including Carbon Black, CAS 1333-86-4, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Handling: Cut sheets may have sharp edges. We recommend wearing protective gloves when unpacking and handling this material to ensure safety.
Suitability: We take pride in the quality of our materials as they leave our facility. However, because every project is unique, we cannot account for how materials are modified, stored, or used after delivery. Please perform the necessary tests to ensure this material is right for your specific application and end-use conditions.
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Technical Performance
Pipe Grade Black HDPE is engineered for intensive applications that require excellent chemical resistance, high impact strength, and UV stability for use in outdoor environments.
Fluid-Handling Equipment: Tank components, sumps, liners, secondary-containment parts, and compatible welded assemblies.
Outdoor Industrial Equipment: Supported panels, machine components, guards, and fabricated parts requiring carbon-black UV stabilization and corrosion resistance.
Engineering Limitations & Alternatives
While Pipe Grade HDPE is highly durable, specific applications may require alternative materials:
Cosmetic Surface Finish: As an unmasked, industrial-grade sheet, minor scuffs and scratches are normal. Better Alternative: For a matte-textured finish for visible marine components, consider King StarBoard®.
Elevated Temperatures: HDPE loses stiffness and becomes more susceptible to creep as temperature and sustained load increase. Better Alternative: For higher temperature resistance, consider Polypropylene or Nylon.
Extreme Sliding Wear: While it has a low coefficient of friction, it does not match the extreme abrasion resistance of ultra-high molecular weight materials. Better Alternative: For extreme abrasion and longer wear life in conveyor guides, choose UHMW.
Black HDPE Sheet | Polystone Black HDPE Pipe Grade Sheet Questions?
WARNING: This product can expose you to chemicals including Carbon Black, CAS 1333-86-4, which are known to the State of California to cause cancer. For more information go to