Product Data Sheet Show all documents
Tuff-N-Nuff®

Tuff-N-Nuff®

Rockshield for Pipe / Coating Protection

Tuff-N-Nuff® is a rockshield comprised of small diameter (approximately 0.050”) strands of flexible PVC which form a porous, non-woven mat. These strands are bonded to each other in a controlled random pattern during production. Tuff-N-Nuff® protects pipeline coatings from direct impact during backfill operations. It also provides long-term protection by keeping hard objects in the backfill from coming into contact with the pipeline coating. Tuff-N-Nuff® also protects the pipeline coating from these abrasive objects as lateral and longitudinal movements occur once the pipeline is placed into service. Tuff-N-Nuff® with Rapid-Edge self fasterning hook and loop system available for faster, easier installation. In addition, Tuff-N-Nuff® does not shield cathodic protection being supplied to pipelines when installed using Rapid-Edge, monofilament tape or nonmetallic strapping as described in the Application Instructions.

  • Laboratory and field tested to protect FBE coated steel from rocky or harsh backfill material.
  • Outstanding impact resistance results in the modified ASTM G-13 rock drop testing.
  • Porous and random strand matrix design does not shield cathodic protection.
  • PVC product construction reduces the impact load transfer onto the pipe during backfilling.
  • Durable product which exhibits excellent physical and performance properties.
  • Flexible, lightweight material allows for a quick and inexpensive installation process, even in extreme arctic temperatures.
  • Custom sizes are available for every pipeline diameter size (zero waste).
  • Product was designed and has been sold specifically as a rockshield for nearly 30 years.
  • Manufacturing capacity to support large scale pipeline projects.
  • Specified for use as a rockshield by some of largest pipeline owners in the world.
  • Safety yellow color helps to identify the pipeline during dig ups.
  • Quicker installation with less manpower when utilizing Rapid-Edge hook-and-loop closure system. 
  • No Tape or strapping material required when Rapid-Edge option is used.
Product Data Sheet Show all documents

Usage

Steel and plastic pipelines  

Advantages

  • Laboratory and field tested to protect FBE coated steel from rocky or harsh backfill material.
  • Outstanding impact resistance results in the modified ASTM G-13 rock drop testing.
  • Porous and random strand matrix design does not shield cathodic protection.
  • PVC product construction reduces the impact load transfer onto the pipe during backfilling.
  • Durable product which exhibits excellent physical and performance properties.
  • Flexible, lightweight material allows for a quick and inexpensive installation process, even in extreme arctic temperatures.
  • Custom sizes are available for every pipeline diameter size (zero waste).
  • Product was designed and has been sold specifically as a rockshield for nearly 30 years.
  • Manufacturing capacity to support large scale pipeline projects.
  • Specified for use as a rockshield by some of largest pipeline owners in the world.
  • Safety yellow color helps to identify the pipeline during dig ups.
  • Quicker installation with less manpower when utilizing Rapid-Edge hook-and-loop closure system. 
  • No Tape or strapping material required when Rapid-Edge option is used.

Packaging

Tuff-N-Nuff® is available with or without Rapid-Edge hook and loop fastening system.

Packaging without Rapid-Edge option

Tuff-N-Nuff is available two standard product thicknesses - 1/4” and 3/8” (6.35 mm and 9.52 mm). Rolls are provided for pipeline diameters up to and including 20”, with a width matching the pipeline circumference plus a nominal 4-inch overlap. Standard rolls are 30 feet long, but can be produced in any practical length that can be easily lifted on the jobsite, typically not exceeding 60 feet in length. Pads are provided for pipelines greater than 20” in diameter, with a width matching the pipeline circumference plus a nominal 4-inch overlap. Standard pad lengths are 72” (36” width available upon request).

Packaging with Rapid-Edge option

Tuff-N-Nuff® with Rapid-Edge is available in 3/8" (9.52mm) thickness.  Rolls are are provided for pipeline diamters up to and including 20", with a width matching the pipeline circumference plus a nominal 4-inch overlap.  Standard rolls are 30 feet long.

Rapid-Edge hook width = 1"

Rapid-Edge loop width = 2"  

Product Details

Product Information

Shelf Life

N/A

Storage Conditions

Material must be protected from long term UV exposure

Mass per Unit Area

0.860 (Minimum)

(ASTM D-792)
Technical Information

Impact Strength

No failure @ 6” rock1

(ASTM G-13)

(Modified)

1Test modified to include rocks which progress in size from 1 ½”, 3”, 4”and 6”, 10 drops each. Each drop consisted of released 50+ lbs of stone from a height of 6’ onto a fusion bonded epoxy coated steel plate protected by Tuff-N-Nuff. The FBE coated steel plate is visually inspected for holidays after each drop.

Resistance to Static Puncture

Impact Resistance

No failure @ 6” rock

ASTM G13 (Modified)*

* Test modified to include rocks which progress in size from 1 ½”, 3”, 4”and 6”, 10 drops each. Each drop consisted of released 50+ lbs of stone from a height of 6’ onto a fusion bonded epoxy coated steel plate protected by Tuff-N-Nuff. The FBE coated steel plate is visually inspected for holidays after each drop.

Resistance to pyramid puncture

Puncture Strength

150 lbs

(ASTM D-6241 (Modified)

Compression resistance

Compressive Strength

2.20 llbs/in2 @ 10% deflection

(ASTM D-1621)

Tensile Strength

Tear Strength

150 lbs/in

(ASTM D-4533)


Grab Strength

99 lbs

(ASTM D-4632)

Low Temp Brittleness

>-65°F (exceeded chamber capability)

(ASTM D-746)

Elongation

100%

(ASTM D-4632)

Ambient Maximum Temperature of Liquids

320°F

(Custom)

Water permeability

Cathodic Protection

No inhibiting effect

custom

Abrasion Resistance

75 psi

(ASTM D-4886)

Microbiological Resistance

No Growth

(ASTM G-22)

Durability

No failure @ 6" rock1

(ASTM G-13 (Modified)

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