API SPEC 15PX pdf download Specifcation for Crosslinked Polyethylene (PEX) Line Pipe
The purpose of this specification is to provide standards for crosslinked polyethylene (PEX) line pipe suitable foruse in conveying oil, gas,and nonpotable water in underground, aboveground, and reliner applications for theoil- and gas-producing industries.
This specification does not address all of the safety concerns associated with the design, installation, or use ofproducts suggested herein. lt is the responsibility of the user of this specification to make appropriate health andsafety considerations.
All pipe produced under this specification use pressure-rated materials used in pressurized, non-pressure, andnegative pressure applications.
The technical content of this document provides requirements and guidelines for performance, design, materialsinspection, dimensions and tolerances, marking, handling, storing, and shipping.
This specification covers PEX line pipe used for the production and transportation of oil, gas, and nonpotablewater. This specification does not cover pipe for chlorinated water service. The piping is intended for use in newconstruction， structural pressure-rated liner,line extension, and repair of both aboveground and buried-pipeapplications.Equipment covered by this specification is listed as follows:
a) PEX line pipe;
c)metallic flange couplers for field installations and PEX face flanges used as internal diameter adapters.1.3Service Conditions
The standard service conditions for the API 15PX standard pressure rating are as follows:a)non-chemically-aggressive fluids;
b) operating temperature range:-50 °C (-58 °F) to 93 °C (200 °F) or 95 °C (203 °F), depending on design
methodology (Section 4).
NOTE Applications above 95°C(203 °F) require special design consideration; service conditions other than the standardAPI15PX conditions and their effects on design are discussed in Section 4.
This specification includes by reference, either in total or in part, the most current issue of the following standards:API Q1, Specification for Quality Management System Requirements for Manufacturing Organizations for thePetroleum and Matural Gas industry
API 1104,Standard for Welding Pipelines and Related Facilities
ASME Boiler and Pressure Vessel Code, Section lX, Welding and Brazing QualificationsASTM D638,Standard Test Method for Tensile Properties of Plastics
ASTMD1598, Standard Test Method for Time-to-Failure of Plastic Pipe Under Constant Internal PressureASTM D21223 Standard Test Method for Determining Dimensions of the Thermoplastic Pipe and Fittings
ASTMD2765, Standard Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked EthylenePlastics
ASTMD2837, Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials orPressure Design Basis for Thermoplastic Pipe Products
ASTM D3895，Standard Test Method for Oxidative-Induction Time of Polyolefins b y D iferential ScanningCalorimetry
ASTMF1055, Standard Specification for Eectrofusion Type Polyethylene Fittings for Outside Dlameter ControlledPolyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing
ASTM F2905/F2905M,Standard Specification for Black Crosslinked Polyethylene (PEX) Line Pipe,Fittings andJoints for Oil and Gas Producing Applications
ASTMF3203, Standard Test Method for Determination of Gel Content of Crosslinked Polyethylene (PEX) Pipesand Tubing
ASTM F876, Standard Specification for Crosslinked Polyethylene (PEX) Tubing
ASTM F2657,Standard Test Method for Outdoor Weathering Exposure of Crosslinked Polyethylene(PEX)Tubing
ASTM D4364，Standard Practice for Performing Outdoor Accelerated Weathering Tests of Plastics UsingConcentrated Sunlight
DIN 168923 Crosslinked polyethylene(PE-X) pipes —General requirements, testingISO 527-1,4 Determination of tensile properties
ISO 1167,Thermoplastics pipes for the conveyance of fluids — Resistance to internal pressure —Test methodISO 10147, Pipes and fittings made of crosslinked PEX (PE-X)—Estimation of the degree of crosslinking bydetermination of the gel content
ISO 11357-6,Plastics — Differential scanning calorimetry (DSC)— Part 6: Determination of oxidation inductiontine (isothermal OIT) and oxidation induction temperature (dynamic OIT)
ISO 13477，Thermoplastics pipes for the conveyance of fluids — Determination of resistance to rapid crackpropagation (RCP)-Small-scale steady-state test (S4 test)