SY/T 6577.1-2003, titled "Pipeline Steel Pipeline Transportation - Part 1: Railway Transportation," outlines the standards for transporting steel pipelines via railway systems. It provides guidelines on the design, handling, and transport of pipeline sections to ensure safety and efficiency during rail transit.
SY/T 6577.2-2003, "Pipeline Steel Pipeline Transportation - Part 2: Inland and Offshore Shipping," covers the transportation of steel pipes by inland waterways and sea routes. This standard includes specifications for packaging, securing, and handling pipelines during maritime and riverine transport.
SY 5037-2000, "Spiral Seam Submerged Arc Welding of Low Pressure Fluid Conveying Pipes," sets the technical requirements for the production of spiral-welded pipes used in low-pressure fluid conveyance. It focuses on welding procedures, material selection, and quality control.
SY/T 5768-1995, "Welded Steel Pipe for General Structure," defines the criteria for general-purpose welded steel pipes. It includes information on dimensions, mechanical properties, and testing methods to ensure structural integrity.
SY/T 6423.2-1999, "Non-Destructive Testing Method for Pressure Vessels in Petroleum and Natural Gas Industry - Ultrasonic Testing for Longitudinal Imperfections of Resistance and Induction Welded Steel Pipe," specifies ultrasonic testing procedures for detecting longitudinal defects in resistance and induction welded steel pipes.
SY/T 6423.3-1999, "Non-Destructive Testing Method for Pressure Vessels in Petroleum and Natural Gas Industry - Ultrasonic Testing of Longitudinal and/or Transverse Imperfections of Submerged Arc Welded Steel Pipe," addresses the detection of both longitudinal and transverse imperfections in submerged arc welded pipes using ultrasonic techniques.
SY/T 6423.4-1999, "Non-Destructive Testing Method for Steel Tube in Oil and Gas Industry - Ultrasonic Testing of Layered Imperfection Near Welded Seam of Welded Steel Pipe," focuses on identifying layered imperfections near the weld seam through ultrasonic testing.
SY/T 6423.5-1999, "Non-Destructive Testing Method for Pressure Vessels in Oil and Gas Industry - Ultrasonic Testing of Layered and/or Steel Sheets for Welded Steel Pipes," covers the inspection of layered and sheet-like defects in welded steel pipes.
SY/T 6423.6-1999, "Non-Destructive Testing Method for Pressure Vessels of Petroleum and Natural Gas Industry - Seamless and Welding (Except for Submerged Arc Welding) - Ultrasonic Testing for Layered Imperfections," details ultrasonic testing for layered imperfections in seamless and other types of welded pipes, excluding submerged arc welding.
SY/T 6423.7-1999, "Non-Destructive Testing Method for Pressure Vessels in Oil and Gas Industry - Ultrasonic Testing of Seamless and Welded Pipe Ends," provides guidelines for ultrasonic testing at the ends of seamless and welded pipes to ensure structural soundness and reliability.
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