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AS 4321-2001

[Pending Revision]

Fusion-bonded medium-density polyethylene coating and lining for pipes and fittings

Specifies requirements for factory-applied fusion-bonded medium-density polyethylene coatings for pipes and fittings, for protection against corrosion at operating temperatures between -40 degrees Celsius and plus 50 degrees Celsius. It is intended for use by specifiers, applicators, manufacturers and purchasers of steel water pipeline.
Published: 05/05/2001
Pages: 34
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 Materials
4.1 General
4.2 Polyethylene coating (and lining) compound
4.2.1 Composition
4.2.2 Dispersion of additives
4.3 Polyethylene reinstatement compound
4.3.1 Composition
4.3.2 Dispersion of additives
5 Coating and lining application
5.1 Preparation of surface
5.2 Application
5.3 Cleaning of pipe and fitting ends
5.4 End treatment
6 Test requirements
6.1 Type test
6.1.1 General
6.1.2 Polyethylene coating (and lining) compound
6.1.2.1 General
6.1.2.2 Thermal stability
6.1.2.3 Water absorption
6.1.2.4 Penetration resistance
6.1.2.5 Tensile stress at yield
6.1.2.6 Environmental stress-cracking resistance
6.1.2.7 Density
6.1.2.8 Impact resistance
6.1.3 Polyethylene reinstatement compound
6.1.3.1 General
6.1.3.2 Water absorption
6.1.3.3 Adhesion to steel
6.1.3.4 Adhesion to polyethylene coating compound
6.2 Application process qualification
6.3 Production tests
6.3.1 General
6.3.2 Thickness
6.3.3 Continuity test
6.3.4 Bond strength
7 Reinstatement
7.1 General
7.2 Application of reinstatement
7.3 Reinstatement test requirements
8 Repairs
8.1 General
8.2 Repair limits
8.2.1 Coating repairs
8.2.2 Lining repairs
8.3 Repair test methods
9 Test frequency
10 Effect of FBPE lining on water quality
11 Storage, handling, transport and marking
11.1 Handling and storage of coated pipes and fittings
11.2 Transport of coated pipes and fittings
11.3 Marking
Appendix A
A1 Scope
A2 Relevance
A3 Definitions
A4 Product certification
A5 Minimum sampling and testing frequency plan
A5.1 General
A5.2 Retesting
A5.3 Rejection after retest
A6 Type testing for re-evaluation
A6.1 Change in material/compound
A6.2 Required type tests
Appendix B
B1 General
B2 Information to be supplied by the purchaser
Appendix C
C1 Scope
C2 Principle
C3 Apparatus
C4 Preparation of test piece
C5 Procedure
C6 Test report
Appendix D
D1 Scope
D2 Principle
D3 Apparatus
D4 Preparation of test piece
D5 Procedure
D6 Test report
Appendix E
E1 Scope
E2 Principle
E3 Apparatus
E4 Preparation of test piece
E5 Procedure
E6 Test report
Appendix F
F1 Scope
F2 Principle
F3 Apparatus
F4 Preparation of test pieces
F5 Conditioning
F6 Procedure
F7 Report
Appendix G
G1 Scope
G2 Principle
G3 Apparatus
G4 Reagent
G5 Preparation of test pieces
G6 Conditioning
G7 Procedure
G8 Report
Appendix H
H1 Scope
H2 Principle
H3 Apparatus
H4 Removal of sample from test pipe
H5 Preparation of test specimens
H6 Procedure
Appendix I
I1 Scope
I2 Principle
I3 Preparation of coated test pipe
I4 Procedure
I5 Report
Appendix J
J1 Scope
J2 Principle
J3 Apparatus
J4 Preparation of test piece
J5 Procedure
J6 Test report
Appendix K
K1 Scope
K2 Principle
K3 Apparatus
K4 Preparation of test piece
K5 Procedure
K6 Test report
Appendix L
L1 Scope
L2 Principle
L3 Apparatus
L3.1 General equipment
L3.2 Cathodic disbonding test cells
L4 Preparation of test sample
L5 Test procedure
L6 Report
Appendix M
M1 Scope
M2 Apparatus
M3 Voltage setting and calibration
M4 Procedure
M4.1 FBPE coated or lined pipes with exposed steel
M4.2 FBPE coated pipes with no exposed steel but with a cement mortar lining
M4.3 FBPE coated and lined pipe completely covered with FBPE
M4.4 Testing
M5 Report
Appendix N
N1 Scope
N2 Principle
N3 Apparatus
N4 Preparation of test piece
N5 Test conditions
N6 Procedure
N7 Report
Cited references in this standard
Content history
[Superseded]
AS 4321-2001 REC:2019
DR 00247