Specification For Low Pressure Fiberglass Line Pipe and Fittings

API SPECIFICATION 15LR SEVENTH EDITION, AUGUST 2001

EFFECTIVE DATE: FEBRUARY 1, 2002

ERRATA 1, JUNE 2018

ERRATA 2, APRIL 2021

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Copyright © 2001 American Petroleum Institute

FOREWORD

1. This specification is under the jurisdiction of the American Petroleum Institute Subcom- mittee on Fiberglass and Plastic Tubulars.

2. The purpose of this specification is to provide standards for low pressure fiberglass line pipe and fittings for use in conveying produced fluids including oil, gas, nonpotable water and mixtures thereof in the oil and gas producing industries.

3. Nothing in this specification should be interpreted as indicating a preference by the com- mittee for any material or process or as indicating equality between the various materials or processes. In the selection of materials and processes, the purchaser must be guided by his experience and by the service for which the pipe is intended.

4. API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any federal, state, or municipal regulation with which this publication may conflict.

5. This Standard shall become effective on the date printed on the cover but may be used voluntarily from the date of distribution.

6. Appendix F, "Marking Requirements for Monogram Licensees," has been intentionally removed. See API Specification Q1 (Annex A) or the API website for information pertain- ing to the API Monogram Program and use of the API Monogram on applicable products.

7. Suggested revisions are invited and should be submitted to the standardization manager, American Petroleum Institute, 200 Massachusetts Avenue, NW, Suite 1100, Washington, DC 20001.

   Attention Users of this Publication: Portions of this publication have been changed from the previous edition. In some cases the changes are significant, while in other cases the changes reflect minor editorial adjustments. Since the document was significantly re-for- matted from the previous edition, no attempt was made to indicate the location of changes with bar notations.

   
   

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   CONTENTS

   
   

   Page

   1. SCOPE 1

      1. Coverage 1

      2. Unit Conversion 1

      3. Suggestions for Ordering API Low Pressure Fiberglass

         Line Pipe and Fittings 1

   2. REFERENCES 1

      1. References Standards 1

      2. Requirements 2

      3. Equivalent Standards 2

   3. PROCESS OF MANUFACTURE AND MATERIALS 2

      1. Process of Manufacture 2

      2. Material 2

   4. MATERIAL PROPERTIES AND TESTS 2

      1. General 2

      2. Degree of Cure 2

      3. Methods of Material Analysis 2

      4. Frequency of Tests 2

   5. PHYSICAL PROPERTIES AND TESTS 2

      1. Physical Properties 2

      2. Frequency of Tests 3

      3. Minimum Properties 3

      4. Service Factors 3

      5. Pressure Rating 3

      6. Qualification Requirements for Fittings 4

      7. Qualification Tests for Fittings, Couplings, and Connections 4

      8. Requalification Tests for Fittings, Couplings, Connections and Adhesives 5

   6. QUALITY CONTROL TESTS 5

      1. Pipe 5

      2. Fittings—Mill Pressure Tests 5

   7. DIMENSIONS AND LENGTHS 5

      1. Pipe 5

      2. Fittings Dimensions 6

   8. PIPE ENDS, CONNECTIONS, END PROTECTION, AND WORKMANSHIP 6

      1. Pipe Ends 6

      2. Product Drawings 8

      3. Workmanship 8

      4. Repair of Surface Imperfections 8

      5. End Protection 8

      6. Purchaser Inspection 9

   9. MARKING 9

      1. Methods 9

      2. Marking Requirements 9

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Page

APPENDIX A METHOD OF TEST FOR GLASS-RESIN RATIO OF

FIBERGLASS PIPE 11

APPENDIX B METHOD OF TEST FOR THE DETERMINATION OF DEGREE OF CURE BY DIFFERENTIAL SCANNING

CALORIMETRY (DSC) 13

APPENDIX C METHOD OF TEST FOR IMPACT RESISTANCE OF

FIBERGLASS PIPE 15

APPENDIX D SAMPLING PLAN BASIS: 0.75% AOQL (AVERAGE

OUTGOING QUALITY LIMIT) 17

APPENDIX E PRODUCT CHARACTERISTICS 19

APPENDIX G METRIC CONVERSIONS 21

APPENDIX H PURCHASER INSPECTION 23

Tables

1. Dimensions—2 in. through 6 in. Sizes 6

2. Dimensions—8 in. and Larger Sizes 6

3. Dimensional Tolerances 6

4. Thread Sizes 7

5. Spigot Dimensions for Tapered Ends Adhesive Bonded Joints 8

6. Socket Dimensions for Adhesive Bonded Joints Using Non-Tapered Pipe Ends . . .9 7 Visual Standards 10

E.1 Reporting Format for API Spec 15LR Appendix E Product Characteristics 20

Specification for Low Pressure Fiberglass Line Pipe and Fittings

1. Scope

   1. COVERAGE

      This specification covers filament wound (FW) and cen- trifugally cast (CC) fiberglass line pipe and fittings for pipe in diameters up to and including 24 in. in diameter and up to and including 1000 psig cyclic operating pressures. In addition, at the manufacturer’s option, the pipe may also be rated for static operating pressures up to 1000 psig. It is recommended that the pipe and fittings be purchased by cyclic pressure rat- ing. The standard pressure ratings range from 150 psig to 300 psig in 50 psig increments, and from 300 psig to 1000 psig in 100 psig increments, based on either cyclic pressure (ref. 5.5.1) or static pressure (ref. 5.5.2). Quality control tests, hydrostatic mill tests, dimensions, weights, material proper- ties, physical properties, and minimum performance require- ments are included.

      
      

   2. UNIT CONVERSION

      A decimal/inch system is the standard for the dimensions shown in this specification. Nominal sizes will continue to be shown as fractions. For the purposes of this specification, the fractions and their decimal equivalents are equal and inter- changeable. Metric conversions are described in Appendix G.

      
      

   3. SUGGESTIONS FOR ORDERING API LOW PRESSURE FIBERGLASS LINE PIPE AND FITTINGS

      1.3.1 In placing orders for line pipe to be manufactured in accordance with API Specification 15LR, the purchaser may specify the following on the purchase order:

      
      

      1.3.3 The purchaser should also state on the purchase order his requirements concerning the following stipulations which are optional with the purchaser:

      
      

      Degree of Cure Par. 4.4

      Physical Properties Par. 5.1

      Static Pressure Rating Par. 5.5.2

      Pipe Drawings Par. 8.2

      Purchaser Inspection Par. 8.6

      
      

2. References

   1. REFERENCES STANDARDS

This specification includes by reference, either in total or in part, the following API, industry and government stan- dards. Where a specific edition of a standard is referenced, it was the latest edition available for review by the API Sub- committee on Fiberglass and Plastic Tubulars at the time this edition was printed. Subsequent revisions are subject to API subcommittee review prior to acceptance as a referenced standard to this specification.

API

Std 5B Specification for Threading, Gaging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads, Latest Edition

RP 5B1 Recommended Practice for Threading, Gauging, and Thread Inspection of Cas- ing, Tubing, and Line Pipe Threads, Latest Edition

ANSI1

B16.5 Pipe Flanges and Flanged Fittings NPS 1/ 2 Through NPS 24, 1996

Specification API Specification 15LR Quantity

Pressure Rating Par. 1.1

Process of Manufacture Par. 3.1

Resin System Par. 3.2

Nominal Size or Outside Diameter Table 1 and 2 Length Par. 7.1.2

Pipe Ends Par. 8.1

Delivery Date and Shipping Instructions

1.3.2 Attention is called to the following paragraphs which may require agreement between the purchaser and the manu- facturer:

ASTM2

C 582 Standard Specification for Contact-Molded Reinforced Thermosetting Plastic (RTP) Laminates for Corrosion Resistant Equip- ment, 1995

D 1599 Test Method for Short-Time Hydraulic Failure Pressure of Plastic Pipe, Tubing and Fittings, 1995

D 1694 Specification for Threads for Reinforced Thermosetting Resin Pipe, 1995

D 2105 Test Method for Longitudinal Tensile Prop- erties of Reinforced Thermosetting Plastic Pipe and Tube, 1990

Service Factors Par 5.4

Disposition of Rejected Product Appendix H, Par. H.4

1American National Standards Institute, 1430 Broadway, New York, New York 10018.

2ASTM, 100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428.

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