ASTM A Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand. Normativa ASTM A – Download as PDF File .pdf), Text File .txt) or read online. ASTM Aa() Standard Specification for Zinc-Coated Parallel and Helical Steel Wire Structural Strand Scope.
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When specied, inspection may be waived, and certied copies of test reports furnished. Bethlehem Structural Wire Rope consists of six strands made from zinc-coated wire with strands laid helically around a core, such as another strand or smaller wire rope.
Specically dimensioned strand bigger than 4 in. Welds made in the outer wires prior to drawing are permitted. Record the elongation attained from the elongation extensometer and add to it 0. Your comments will receive careful consideration at a meeting of the responsible adtm committee, which you may attend.
ASTM A 镀锌平行和螺旋形钢丝绳_百度文库
Continue the application of load until fracture occurs. The base metal shall be carbon steel manufactured by the open-hearth, basic-oxygen, or electric-furnace process Finished strands and the hard-drawn individual zinc-coated wires shall be coated by the hot-dip or electrolytic process.
Two separate instruments are advisable since the more sensitive stress at 0. Specimens shall be tested and conform to values of the following physical requirements: Class C Coating Outer Wires Any test, however, which fails due to faulty attaching of the sockets shall be disregarded. The American Society for Testing and Materials takes no position respecting the validity a5886 any patent rights asserted in connection with any item mentioned in this standard.
Then increase the load uniformly until the extension recorded by the extensometer is at least 0. WW is also ISO certified. Users of this astn are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
It can be wstm with Class B weight or Class C weight zinc-coated outer wires where additional corrosion protection is required. Product description Prestretching Striping Proofloading Pin orientation Certification Special features Length tolerances Galvanized coating Modulus of elasticity Length and point of measurement Measuring at required load End terminations dimensions, pin sizes, jaw openings Nondestructive test method.
Smaller Fittings—Many fittings manufactured for standard strand may be used with the SS, thereby offering a lower cost per unit and adding further cost reductions.
Refer to Table 1 for structural strand data.
Bethlehem Structural Strand is an arrangement of wires laid helically around a center wire to produce a symmetrical cross section. Apply a load corresponding to the tensile stress indicated in Table 5, using the nominal diameter of the specimen.
Strands shall be furnished with Class A weight zinc-coated a5886 throughout, but may be zstm with Class B or C weight wires as well where additional corrosion protection is required. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. In doing so, we are able to test and certify the following: A number in parentheses indicates the year of last reapproval.
If either additional a856 fails the retest for breaking strength, the manufactured length in question shall be rejected.
Then increase the load uniformly until the extensometer indicates an extension of 0.
Structural Wire Products
Historical Version s – view previous versions of standard. If it fails to meet the minimum breaking strength requirement, and has not broken in the cone or grips, two additional samples shall be cut from the same s586 length and tested. The strand is available with parallel or helical wire construction.
Splicing of the inner wires during the stranding operation is permissible. ASTM B r The manufacturer shall afford the inspector representing the purchaser all reasonable facilities to satisfy him that the material is being furnished in accordance with this specication. NOTE 1—A typical ordering description is as follows: Reduced Structural Strand Diameter—Now that designers can utilize a smaller diameter strand for the guying system, SS offers a lower cost per foot, allowing the user to cut valuable dollars from the cost of a project.
It can be furnished with Class B weight or Class C weight zinc-coated outer wires where additional corrosion protection is required.
Products | Structural Strand
Loosening or detachment during the adherence test of supercial small particles of zinc formed by mechanical polishing of the surface of zinc-coated wire shall not be considered cause for rejection. In this case the prestretching provision of the test sample of 5. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of qstm standard.