QC System
Laminate check |
Description of Test |
Tolerance |
Barcol hardness check |
± 10% of agreed value |
Specific gravity check |
± 10% of agreed value |
Percent glass check |
± 10% of agreed value |
Percent resin check |
± 10% of agreed value |
Percent void check |
± 10% of agreed value |
Thickness check |
± 10% of agreed value |
Resin Check |
Description of Test |
Tolerance |
Color check |
± 10% of agreed value |
Acid Value check |
± 10% of agreed value |
Viscosity check |
± 10% of agreed value |
![]() Acid value check |
![]() Viscosity check |
Physical Check For GRP Tanks & Vessels |
Description of Test |
Passing Requirement |
rWater-load Test
Method: 1.Tank is placed on saddles at distan |
Tank shall not break or presence of crack on any location of the walls or caps is a sign of failure. Deflection shall not be more than: |
Dimensional Check
for Tank Inside Diameter |
±3% of agreed value |
Leak Test
Method:After the 24-hour test above pressurize the tank to the, following: use |
Tank shall not leak. |
Physical Check For GRP Pipes |
Components |
Characteristic Checked |
Frequency |
Acceptance Standard |
Testing the Rubber Ring |
Visual Check |
Each Lot |
Must be free from any visual defects. |
In-process Control |
1. Laminate cure check 2. Pipe thickness check |
|
Customer’s Acceptance Std. Section, F.2.5 |
Routine Quality Control |
1. Visual Control
|
1 in 10
1 in 10
1 in 50
1 in 50 1 in 50
|
ASTM D3567 & BS 5480
ASTM D2583 BS 5480 & ASTM D2412
BS 5480 ASTM D2580 ASTM D2290
BS5480 |
![]() Laminate barcol hardness test using, Barcol Impresser |
![]() Loss On Ignition test |
![]() Axial & hoop tensile strength test. |
![]() Misaligned Joint test. |
![]() Stiffness test |
![]() Beam-strength test |
Long-Term Type Test – at least 10,000 hours | ||||||
This is a qualification test for the type of materials used and method of production. Unless this test confirms the performance of the specimen-pipe, pipe should not be used for sewer application.
Strain-corrosion test |
This is another qualification test for pipes used in pressure lines. This is called HDB test per ASTM D 2992, Procedure B. Like in strain-corrosion test, it qualifies the method of production, and raw materials. The resulting data can be used to predict the service life of the pipe.
HDB test |