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    Cortland - D/S Composite Double Braid Rope

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    Cortland D/S Composite is a double braided rope with the inner core made of High Modulus Polyethylene (HMPE) and the outer sleeve of polyester. Cortland D/S Composite has very low elongation, high strength and the feel and handling of polyester double braid. It is identified with two external black markers. D/S Composite is delivered standard with an overlay marine finish and is available on special order with a spliceable polyurethane finish in clear or any of six colors. Features & Benefits • High strength • Low stretch • Soft hand • Torque free • Easy splicing Applications • Utility winch lines • Utility pulling lines • Crane lines • Vessel mooring lines • Theatrical rigging Please refer to the technical specifications below for more information. We have all of your synthetic rope, fiber rope, HMPE Rope,floating rope products available. Please ask your Lift-It representative for further information on all your high performance lifting rope needs.

    Fabrication Time: 2 weeks
    Nominal   Diameter  Size (circ in.) Approximate   Weight Minimum   Tensile Strength Spliced Rope Minimum   Tensile Strength ISO Unspliced Rope
    Inch  mm Inch Lbs/100ft Kg/100m Lbs Te (tonnes) Lbs  Te (tonnes)
    5/8 16 2 12.5 18.6 24,600 11.2 27,300 12.4
    3/4 18 2-1/4 15.9 23.7 31,500 14.3 35,000 15.9
    7/8 22 2-3/4 24.9 37.1 44,800 20.3 49,800 22.6
    1 24 3 30.8 45.8 51,600 23.4 57,300 26.0
    1-1/8 28 3-1/2 36.8 54.8 65,500 29.7 72,800 33.0
    1-1/4 30 3-3/4 42.6 63.4 72,700 33.0 80,800 36.7
    1-5/16 32 4 49.7 74 79,500 36.1 88,300 40.1
    1-1/2 36 4-1/2 64 95.2 100,000 45.4 111,000 50.4
    1-5/8 40 5 76 113.1 120,000 54.4 133,000 60.3
    1-3/4 44 5-1/2 89.8 133.6 139,000 63.1 154,000 69.9
    2 48 6 107 159.2 165,000 74.9 183,000 83.0
    2-1/8 52 6-1/2 125 186 183,000 83.0 203,000 92.1
    2-1/4 56 7 141 209.8 215,000 97.5 239,000 108.4
    2-1/2 64 7-1/2 174 258.9 236,000 107.1 262,000 118.9

    Rope Specifications

    Minimum Tensile Strength Minimum tensile strengths shown are for new (unused) rope and will decrease after use. All tests are performed in accordance with Cordage Institute Standard CI 1500-2. The rope strength will be reduced after use due to heat, abrasion, ultraviolet or chemical exposure. The tensile strengths may be further reduced by up to 50% as a result of knots or kinks. Minimum tensile strengths are defined as two standard deviations (typical about 10%) below the average.

    Maximum Working Loads Maximum working loads are determined by dividing the tensile strength by the safety factor. The safety factor is a function of the physical properties of the rope, the age and history of the rope, the type of service it will be subjected to and the risks involved if failure occurs. For a rope manufacturer to give blanket working load recommendations would be like a car manufacturer giving the “safe driving speed” of their cars. Obviously the conditions of use far outweigh the design characteristics of the rope. Typically safety factors vary from 3:1 (for new rope used in applications with uniform loading and where failure would cause little or no risk to equipment or personnel) to 20:1 (for conditions involving moderate shock loading, possibility of snags or kinks or where failure could cause severe risk to equipment or personnel).

    Rope Weights Rope weights shown are average and may vary plus or minus 5%.

    Working Elongation Working elongation is shown from a preload tension of 200 times the diameter squared per the Cordage Institute Standard. CT_TL_013_1115_US

     

    Special Requirements

    Factory Splicing Various types are available for all of our ropes. Splices can be provided with various types of chafe protection or coatings.

    Custom Lengths Special constructions are available on request.

    Rope Terminations Cortland can provide custom terminations such as thimbles, links, rings and custom hardware. Terminations are available in plastic, bronze, stainless steel and galvanized steel. Please call or fax your requirements for a quotation.

    Special Coatings Coatings such as polyurethane, polyethylene and vinylesters may be applied to any of the synthetic ropes to improve snag resistance, sunlight resistance or for color coding. Cortland can provide ropes with a variety of finishes to meet your needs.

    Commercial and Military Specifications Certificates of compliance are supplied at no charge if requested when placing the order. Certified test reports can be provided at an additional charge when requested at the time of the order.

    All goods are custom made and Non-returnable. Any return must be negotiated, include a return authorization number and will be subject to a restocking fee.
    Nominal   Diameter  Size (circ in.) Approximate   Weight Minimum   Tensile Strength Spliced Rope Minimum   Tensile Strength ISO Unspliced Rope
    Inch  mm Inch Lbs/100ft Kg/100m Lbs Te (tonnes) Lbs  Te (tonnes)
    5/8 16 2 12.5 18.6 24,600 11.2 27,300 12.4
    3/4 18 2-1/4 15.9 23.7 31,500 14.3 35,000 15.9
    7/8 22 2-3/4 24.9 37.1 44,800 20.3 49,800 22.6
    1 24 3 30.8 45.8 51,600 23.4 57,300 26.0
    1-1/8 28 3-1/2 36.8 54.8 65,500 29.7 72,800 33.0
    1-1/4 30 3-3/4 42.6 63.4 72,700 33.0 80,800 36.7
    1-5/16 32 4 49.7 74 79,500 36.1 88,300 40.1
    1-1/2 36 4-1/2 64 95.2 100,000 45.4 111,000 50.4
    1-5/8 40 5 76 113.1 120,000 54.4 133,000 60.3
    1-3/4 44 5-1/2 89.8 133.6 139,000 63.1 154,000 69.9
    2 48 6 107 159.2 165,000 74.9 183,000 83.0
    2-1/8 52 6-1/2 125 186 183,000 83.0 203,000 92.1
    2-1/4 56 7 141 209.8 215,000 97.5 239,000 108.4
    2-1/2 64 7-1/2 174 258.9 236,000 107.1 262,000 118.9

    Rope Specifications

    Minimum Tensile Strength Minimum tensile strengths shown are for new (unused) rope and will decrease after use. All tests are performed in accordance with Cordage Institute Standard CI 1500-2. The rope strength will be reduced after use due to heat, abrasion, ultraviolet or chemical exposure. The tensile strengths may be further reduced by up to 50% as a result of knots or kinks. Minimum tensile strengths are defined as two standard deviations (typical about 10%) below the average.

    Maximum Working Loads Maximum working loads are determined by dividing the tensile strength by the safety factor. The safety factor is a function of the physical properties of the rope, the age and history of the rope, the type of service it will be subjected to and the risks involved if failure occurs. For a rope manufacturer to give blanket working load recommendations would be like a car manufacturer giving the “safe driving speed” of their cars. Obviously the conditions of use far outweigh the design characteristics of the rope. Typically safety factors vary from 3:1 (for new rope used in applications with uniform loading and where failure would cause little or no risk to equipment or personnel) to 20:1 (for conditions involving moderate shock loading, possibility of snags or kinks or where failure could cause severe risk to equipment or personnel).

    Rope Weights Rope weights shown are average and may vary plus or minus 5%.

    Working Elongation Working elongation is shown from a preload tension of 200 times the diameter squared per the Cordage Institute Standard. CT_TL_013_1115_US

     

    Special Requirements

    Factory Splicing Various types are available for all of our ropes. Splices can be provided with various types of chafe protection or coatings.

    Custom Lengths Special constructions are available on request.

    Rope Terminations Cortland can provide custom terminations such as thimbles, links, rings and custom hardware. Terminations are available in plastic, bronze, stainless steel and galvanized steel. Please call or fax your requirements for a quotation.

    Special Coatings Coatings such as polyurethane, polyethylene and vinylesters may be applied to any of the synthetic ropes to improve snag resistance, sunlight resistance or for color coding. Cortland can provide ropes with a variety of finishes to meet your needs.

    Commercial and Military Specifications Certificates of compliance are supplied at no charge if requested when placing the order. Certified test reports can be provided at an additional charge when requested at the time of the order.