API 5LC 2020 pdf free download

API 5LC 2020 pdf free download.CRA Line Pipe.
b) Welded Processes. 1) Without Filler Metal. Electric weld (applicable to LC30-1512 and full-body heat-treated duplex alloys only). A process of forming a seam by electric-resistance welding, or induction welding wherein the edges to be welded are mechanically pressed together and the heat for welding is generated by the resistance-to-flow of electric current. 2) With Filler Metal. i) Submerged Arc Welding. A welding process that produces coalescence of metals by heating them with an arc or arcs between a bare metal electrode or electrodes and the work. The arc and molten metal are shielded by a blanket of granular, fusible material on the work. Pressure is not used, and the filler metal is obtained from the electrode. ii) Gas Metal Arc Welding. A welding process that produces coalescence of metals by heating them with an arc or arcs between a continuous filler metal electrode and the work. Shielding is obtained entirely from an externally supplied gas. Pressure is not used and filler metal is obtained from the electrode. 3) With or Without Filler Metal. i) Plasma Arc Welding. An arc welding process that produces coalescence of metals by, heating them with a constricted arc between the electrode and the workpiece (transferred arc) or the electrode and the constricting nozzle (nontransferred arc). Shielding is obtained from the hot, ionizing gas issuing from the torch, which may be supplemented by an auxiliary source of shielding gas. Shielding gas may be an inert gas or a mixture of gases. Pressure may or may not be used and filler metal may or may not be supplied. ii) Gas Tungsten Arc Welding. An arc welding process that produces coalescence of metals by heating them with an arc between a tungsten electrode (nonconsumable) and the work pieces. Shielding is obtained from a gas. Pressure may or may not be used and filler metal may or may not be used.
c) Pipe-making Processes (See Table 3). 1) Seamless. Seamless pipe is produced by the seamless process defined above in 5.1. 2) Centrifugally Cast. Centrifugally cast pipe is produced by the centrifugal casting process defined above in 5.1 a) 2). The entire inner surface of centrifugally cast pipe shall be machined. The outer surface may be machined as well, when agreed upon between the purchaser and the manufacturer. 3) Electric Weld. Electric-welded pipe is defined as having one longitudinal seam produced by the electric welding process as defined in 5.1 b) 1). 4) Submerged Arc. Submerged arc welded pipe is defined is having one longitudinal seam produced by the automatic submerged arc welding process as defined in 5.1 b) 2) i). At least one pass shall be on the inside and one pass on the outside. All end welding of submerged arc welded pipe, if not done by automatic submerged arc welding, shall be done by a procedure and a welder qualified in accordance with Annex C of this specification.
5.3 Pipe furnished to this specification may be as-rolled, solution annealed 6 , except LC52-1200, which shall be quenched and tempered. Other appropriate heat treatment may be agreed upon between purchaser and manufacturer. Traceability 5.4 The manufacturer shall establish and follow procedures for maintaining heat and/or lot identity until all required heat and/or lot tests are performed and conformance with specification requirements has been shown. Hydrogen Sulfide Environments 5.5 For any grade, if the intended application is for use in an environment that contains hydrogen sulfide then this should be clearly stated in the purchase agreement. Where use in an environment containing hydrogen sulfide is stated in the purchase agreement, all requirements of ANSI/NACE MR0175 and ISO 15156-3 shall be satisfied. In such cases, sour service designation marking according to ANSI/NACE MR0175 and ISO15156-3, Annex C shall be applied. 6 Chemical Properties and Tests Composition 6.1 The composition of pipe furnished to this specification, as determined by heat analyses, shall conform to the chemical requirements specified in Table 4.