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API SPEC 5LD – 2009 pdf free download

API SPEC 5LD – 2009 pdf free download.Specification for CRA Clad or Lined Steel Pipe.
1 Scope 1.1 Coverage This specification covers seamless and welded clad steel line pipe and lined steel line pipe with enhanced corrosion resistant properties suitable for use in pipeline transportation systems in the petroleum and natural gas industries. The clad and lined steel line pipe specified herein is composed of a carbon steel backing or base material outside (in some cases inside and/or outside) and a corrosion-resistant alloy (CRA) layer or lining inside of the pipe. The base material conforms to API 5L, PSL 2 and applicable annex(es), except as modified herein. The delivered product usually has square ends, but other special ends may be furnished by agreement between the purchaser and manufacturer. Included are NPS 25 mm (1 in.) through 2134 mm (84 in.). Sizes greater than 2134 mm (84 in.) are outside of the range of API 5L but may be supplied up to 2500 mm (100 in.) by agreement, including requirements for materials. Grades of base material covered by this specification include X42, X46, X52, X56, X60, X65, X70 and X80 and grades intermediate to these. Grades of the CRA layer are LC 1812, 2205, 2506, 2242, 2262, UNS S317030, UNS N08904, Alloy 59 (UNS N06059), Alloy 254 SMO™ 1 (UNS S31254), AL6NX (UNS N08367) and 1.4529 (UNS N08926). Other grades are subject to agreement between the purchaser and the manufacturer. 1.2 General This specification is under the jurisdiction of the API Committee on Standardization of Tubular Goods. The purpose of this specification is to provide standards for pipe with enhanced corrosion resistance suitable for use in conveying gas, water, and oil in both the oil and natural gas industries. Although the plain-end line pipe meeting this specification is primarily intended for field make-up by circumferential welding, the manufacturer will not assume responsibility for field welding. The size designations are nominal pipe sizes.
2.3 Normative Standards The most recent editions of the following standards contain provisions that, through reference in this text, form a part of this standard. API Specification 5L, Specification for Line Pipe API Specification 5LC, Specification for CRA Line Pipe API Standard 1104, Welding Pipelines and Related Facilities ASME Boiler and Pressure Vessel Code (BPVC) 2 , Section II, Part C: Specifications for Welding Rods, Electrodes and Filler Metals ASME BPVC, Section IX: Welding and Brazing Qualifications ASTM A240 3 , Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications ASTM A262, Standard Practices for Detecting Susceptibility of Intergranular Attack in Austenitic Stainless Steels ASTM A264, Specification for Stainless Chromium-Nickel Steel Clad Plate ASTM A265, Standard Specification for Nickel and Nickel-Base Alloy-Clad Steel Plate ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products ASTM A578, Standard Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications ASTM A751, Standard Test Methods, Practices and Terminology for Chemical Analysis of Steel Products
5.2 Description of Clad and Lined Steel Pipe 5.2.1 Clad Pipe Clad pipe is a bimetallic pipe composed of an internal (and in some cases external) CRA layer which is metallurgically bonded to the backing steel. The cladding may be bonded by hot rolling, co-extrusion, weld overlay, explosion bonding, powder metallurgy or some other process that produces a metallurgical bond. Clad pipe may be either seamless or welded. a) Seamless. Seamless clad pipe is produced by the seamless process defined in API 5L, Section 8.1 and shall meet the requirements of API 5L, PSL 2. b) Welded. Welded clad pipe is produced from plate or skelp which has been clad by one of the processes described in 5.2.1. The backing material shall meet the requirements of API 5L, PSL 2. The longitudinal seam of the backing steel shall be welded by one of the welding processes included in API 5L, Section 8.1 except as follows. In addition, GTAW is acceptable for the tack welds and PAW (PTA) is acceptable for the seam welds provided appropriate qualifications to API 5L, Annex B are performed. For welding of the cladding material, processes in API 5LC, Section 5.1 b), or RES welding and PAW are permitted.

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