Overview

Steel reinforced polyethylene (SRPE) pipe combines the strength of steel with the durability of plastic, resulting in an extraordinarily strong and durable pipe. This pipe meets the long-term structural demands of the most difficult sanitary sewer, storm sewer, irrigation, stormwater detention, and wastewater projects.

Eighty (80) ksi steel reinforcing (SR) provides the strength; pressure rated polyethylene (PE) resin provides the durability. The combination of materials results in an extraordinarily strong and durable pipe.

SRPE provides the lightweight, low-cost structural advantages of traditional HDPE with none of the disadvantages. The built-in capacity of the steel reinforced ribs ensures the pipe will not creep or buckle. SRPE can be twice as stiff as non-steel reinforced HDPE pipe, as it is more resistant to the effect of temperature and sunlight.

SRPE can be made watertight, and can be used in applications with corrosive soils or abrasive flows. SRPE’s smooth interior provides a pipe that is hydraulically efficient capable of Manning’s “n” values of 0.011 to 0.013 and allows for minimum slope designs and longer runs.

SRPE is available in diameters ranging from 30” – 120” and manufactured in standard lengths of 14’ or 24’. Larger diameter pipe increases storage volume while long pipe sections reduce the number of units to be set and joints to assemble.

SRPE is lightweight and quickly installed; often eliminating the need to use heavy construction equipment. Longer lengths and easy joint assembly also contribute to costs savings.

Specifications

HDPE with steel reinforced ribs
Corrosion and abrasion resistant
3 psi soil tight joints, steel reinforced 10.8 psi high performance, and 30 psi welded coupler joints
Smooth interior
Light weight/longer lengths
Availability
Will not creep or buckle; can be twice as stiff as non-steel reinforced HDPE pipe
Can be used in acidic/caustic soils, or in applications with corrosive or highly abrasive flows
Joint options for a variety of sites & applications
Superior hydraulics; allows for minimum slope designs and longer runs
Fast installation, costs savings
Nationwide manufacturing footprint
 
Nominal Pipe Size Outside Diameter Unit Weight* Minimum Waterway Wall Thickness (t1) Minimum Cover*** Maximum Cover
inch in. [mm] lbs./ft in. [mm] ft.   [m] ft. [m]
30 30.9 [785] 15.5 .082 [2.08] 1 [.305] 50 [15.2]
36 37.1 [942] 20.8 .082 [2.08] 1 [.305] 50 [15.2]
42 43.2 [1097] 26.5 .082 [2.08] 1 [.305] 50 [15.2]
48 49.5 [1257] 29.1 .130 [3.30] 1 [.305] 30 [9.1]
54 55.5 [1410] 34.7 .130 [3.30] 1 [.305] 30 [9.1]
60 61.4 [1560] 41.6 .130 [3.30] 1 [.305] 30 [9.1]
66 67.8 [1722] 56.9 .220 [5.58] 1.5 {.457] 30 [9.1}
72 74.1[1882] 65.6 .220 [5.58] 1.5 [.457] 30 [9.1]
84 85.9 [2182] 76.3 .220 [5.58] 2 [.610] 30 [9.1]
96 98.3 [2497] 87.0 .220 [5.58] 2 [.610] 30 [9.1]
108 111.3 [2827] 99.7 .220 [5.58] 2.5 [.762] 25 [7.6]
120 121.9 [3097] 109.0 .220 [5.58] 3 [.914] 25 [7.6]
* Approximate weights. Actual weight will vary with length and joint type. ** Minimum and maximum cover limits are for H20/H25 loading.
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