DLA A-A-2917-1995 TWINE COTTON SEINE《棉网线》.pdf
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1、A-A-2917 I 9999974 0367547 252 INCH-POUND A-A-2917 COMMERCIAL ITEM DESCRIPTION June 21, 1995 SUPERSEDING T-T-881D February 12, 1969 TWINE, COTTON, SEINE The General Services Administration has authorized the use of this commercial item description in lieu of Federal Specification T-T-881, for all fe
2、deral agencies. 1. SCOPE 1.1 ScoDe. This commercial item description covers cotton seine twine intended for general purpose usage. 2. CLASSIFICATION 2.1 Classification. The twine shall be of the size specified (see Table I and 7.3) . 3. SALIENT CHARACTERISTICS 3.1 Material and construction. The twin
3、e shall be fabricated from 100 percent natural color cotton yarns or cotton/polyester blended yarns of suitable staple and grade to meet the requirements of this commercial item description, and shall have the physical properties in Table I. When cotton/polyester blended yarns are used, the polyeste
4、r content shall be not less than 50 percent and not more than 65 percent. The twine shall be of 3-strand twisted construction (cable lay), “Z“ twist, with each strand composed of yarns twisted in the opposite direction. Table I I Size No. Ply per Length Per Pound Breaking Strength (Commercial) stran
5、d (Minimum Feet) (Minimum Pounds) 12 I 18 30 36 12 o 4 1,545 (471m) 24 (10.9kg) 6 1,020 (311m) 35 (15.9kg) 10 600 (183m) 60 (27.2kg) 12 510 (156m) 70 (31.7kg) 40 150 (46m) 183 (82.9kg) P II IlBeneficial comments, recommendations, additions, deletions, i/ II I! /clarifications, etc. and any data whic
6、h may improve this document11 Ilshould be sent to: General Services Administration, Engineering11 IIGroup (7FXEE), 819 Taylor St., Fort Worth, TX 76102 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. FSC 4020 Provided by IHSNot for ResaleNo reproduction or networkin
7、g permitted without license from IHS-,-,-A-A-2917 3.2 Put-up. The twine shall be put-up on a nominal weight (+ 5 percent) basis as either 1 pound (0.453kg) balls or coreless tubes, as specified. Each ball or coreless tube of twine shall be continuous throughout with no loose ends. The twine shall be
8、 wound so that each turn and layer are free from entanglement. Each ball or coreless tube shall not contain more than one knot per 1/2 pound (0.226kg) of twine. 3.3 Breakins Strensth. The twine breaking strength requirement shall be determined by FED-STD-191, Test Method 6016 (see Table 1). 3.4 Work
9、manshb. The twine shall have no defect that affects appearance or serviceability. 3.5 Measurement svstem. The values stated in inch-pound units are to be regarded as the standard. The metric values stated in parentheses are for information purposes only. 3.6 Metric Droducts. Products manufactured to
10、 metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, providing they fall within the tolerances specified and all other requirements of this document are met. If a product is manufactured to metric dimensions and those dimensions exceed the tolerance
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- DLAAA29171995TWINECOTTONSEINE 网线 PDF
