API 9A 2020 pdf free download
API 9A 2020 pdf free download.Specifcation for Wire Rope.
1 Scope This standard specifes the minimum requirements and terms of acceptance for the manufacture and testing of steel wire ropes for the petroleum and natural gas industries. The following products are covered by this specifcation: — bright- or drawn-galvanized wire rope, — well-measuring wire, and — well-measuring strand. Typical applications include tubing lines, rod hanger lines, sand lines, cable-tool drilling and clean out lines, cable tool casing lines, rotary drilling lines, winch lines, horse head pumping unit lines, torpedo lines, mast-raising lines, guideline tensioner lines, riser tensioner lines, and mooring and anchor lines. Wire ropes for lifting slings and cranes, and wire for well-measuring and strand for well-servicing, are also included. The minimum breaking forces for the more common sizes, grades, and constructions of stranded wire rope not exceeding 2160 grade and well measuring wire are given in tables. However, this standard does not restrict itself to the classes covered by those tables. Other types, such as wire ropes with compacted strands and compacted (swaged) wire ropes, may also conform with its requirements. The minimum breaking force values for these wire ropes and wire are provided by the manufacturer. For information only, other tables present the minimum breaking forces for large diameter wire ropes and spiral ropes (i.e. spiral strand and locked coil), while approximate nominal length masses for the more common wire rope constructions and large diameter stranded and spiral ropes are also given. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
4.1.3 Lubricant Lubricants shall conform to ISO 4346. 4.2 Rope Manufacture 4.2.1 General In stranded ropes, all the wire layers in a strand shall have the same direction of lay. The lay lengths of corresponding wire layers in strands of the same size, construction, and strand layer shall be uniform. The core of a stranded rope, except for compacted (swaged) ropes, shall be designed (steel) or selected (fber) so that in a new rope under no load there is clearance between outer strands. The rope ends shall be secured such that they are prevented from unlaying. 4.2.2 Wire Joints Diameters shall be continuous, but, for wires other than well-measuring wires, if joints are necessary in wires over 0.4 mm, they shall have their ends joined by brazing or welding. For stranded ropes, the minimum distance between joints within one strand shall be 18 × rope diameter (d). For spiral ropes, the minimum distance between joints in any wire layer shall be 36 × diameter of the wire layer. Wires up to and including 0.4 mm may be joined by twisting or by ends being simply inserted into the strands’ formation. 4.2.3 Preformation and Postformation Stranded ropes shall be preformed or postformed, or both, unless specifed otherwise by the purchaser. NOTE Some parallel-closed ropes and rotation-resistant ropes may be nonpreformed. 4.2.4 Construction The rope construction shall be either one of those covered in Annex C or as stated by the manufacturer. The constructions of compacted strand wire ropes, compacted (swaged) wire ropes, large diameter (i.e. over 60 mm) stranded ropes, and spiral ropes (i.e. spiral strand and full-locked coil), shall be stated by the manufacturer. Where only the wire rope class is specifed by the purchaser, the construction supplied shall be stated by the manufacturer.
4.2.6 Wire Finish The fnish of the wires shall be uncoated (bright), zinc-coated class B, or zinc-coated class A. For wire ropes of bright wire fnish, substitution of bright wires by zinc-coated wires shall be limited to inner wires, center wires, fller wires, and core wires. For ropes of zinc-coated wire fnish, all the wires shall be zinc-coated, including those of any steel core. Where zinc-coated is specifed, this may also include zinc alloy Zn95/Al5. 4.2.7 Direction and Type of Wire Rope Lay The direction and type of wire rope lay for stranded ropes shall be one of the following: a) right ordinary lay (sZ) 2 , b) left ordinary lay (zS) 3 , c) right lang lay (zZ) 4 , d) left lang lay (sS) 5 , e) right alternate lay (aZ) 6 , f) left alternate lay (aS) 7 . Well-servicing strand shall be left lay (S). Spiral ropes (i.e. spiral strand and full-locked coil) shall be either right (Z) or left lay (S). The direction and type of rope lay should be specifed by the purchaser.
