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1.1 This specification covers requirements and test methods for materials, dimensions, workmanship, markings for factory manufactured multilayer flexible steel pipe with thermoplastic inner and outer layers and end connections (Fig. 1). It covers nominal sizes 2 in. through 8 in. (50 mm through 200 mm). Flexible steel pipes are multilayered pipe products manufactured in long continuous lengths and reeled for storage, transport and installation. The multilayer thermoplastic and flexible steel pipe governed by this standard are intended for use for the transport of crude oil, natural gas, hazardous chemicals, industrial chemicals and water.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
FIG. 1 Cutaway of Flexible Steel Pipe
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A109/A109M Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled
A312/A312M Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
A333/A333M Specification for Seamless and Welded Steel Pipe for Low-Temperature Service
A506 Specification for Alloy and Structural Alloy Steel, Sheet and Strip, Hot-Rolled and Cold-Rolled
A519 Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2122 Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings
D2321 Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-Flow Applications
D2765 Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene Plastics
F412 Terminology Relating to Plastic Piping Systems
ANSI StandardB16.5 Pipe, Flanges, and Flanged Fittings
API Standards17B Recommended Practice for Flexible Pipe 17J Specification for Unbonded Flexible Pipe
ISO StandardsISO9080 Plastics Piping and Ducting Systems Determination of the Long-Term Hydrostatic Strength of Thermoplastics Materials in Pipe Form by Extrapolation
BSI StandardsEN10210 Hot Finished Structural Hollow Sections of Non-Alloy and Fine Grain Steels EN10297 Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes
PPI StandardsTR-19 Thermoplastics Piping for the Transport of Chemicals TR-4 PPI Listing of Hydrostatic Design Basis (HDB), Strength Design Basis (SDB), Pressure Design Basis (PDB), and Minimum Required Strength (MRS) Ratings for Thermoplastic Piping Materials or Pipe
ICS Number Code 23.040.01 (Pipeline components in general. Pipelines)
UNSPSC Code 40171500(Commercial pipe and piping)
ASTM F2805-11, Standard Specification for Multilayer Thermoplastic And Flexible Steel Pipe And Connections, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top