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Durcor® Composite Lap Joint Flanges

Durcor® Lap Joint Flanges are manufactured from proprietary advanced fiber reinforced composite. Durcor has tensile and compressive strengths that rival steel along with outstanding impact resistance that is unmatched in the industry. Its reinforcing fibers are long and interlocked; this interlocked reinforcement system transfers loads throughout the fiber matrix, making Durcor flanges virtually indestructible.

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Product Features & Benefits

  • INSTALLS IN ANY PIPING SYSTEM: The strength of Durcor enables the flanges to maintain CLASS 150 rating and ANSI B16.5 dimensions and allows it to be installed in any type of piping system without the need for special considerations. Durcor Flanges excel in temperatures from -60°F to +300°F and has only 0.001” of thermal expansion across its full temperature range.
  • SUPERIOR PERFORMANCE IN CORROSIVE ENVIRONMENTS: Durcor vinyl ester resin backbone provides excellent protection when exposed to aggressive chemicals and hostile atmospheres such as acid sprays, bleach, salt water, and high chlorides. Durcor Flanges out-perform stainless and ductile iron flanges not only in corrosive environments but non-corrosive as well.
  • LIGHTWEIGHT ADVANTAGE: Its lightweight advantage reduces the need for heavier support structures for hanging, eliminates the need for extra equipment and personnel for pipe and fitting installation and reduces pipe strain once installed.
  • STRONG AS STEEL: Not only are Durcor lap joint flanges strong as steel, they are also ¼ the weight of steel, are a lower cost than 316 stainless steel, and offer a lower transportation cost, installed cost and a lower life cycle cost than steel. 
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Tensile Strength Comparison

Total Cost Comparison

Technical Details

1 4.25 .56 1.94 .69 1.38
1 1/2 5.00 .69 2.56 .88 1.97
2 6.00 .75 3.06 1.00 2.46
3 7.50 .94 4.25 1.19 3.60
4 9.00 .94 5.31 1.31 4.60
6 11.00 1.00 7.56 1.56 6.75
  • Tensile strength of 50,000psi per ASTM D-638 or 358 Mpa
  • Notched Izod impact strength of 30 ft. lb/inch per ASTM D-25 or 1760 JIM are achieved
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Durcor Fabrication

Durcor Piping System

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