QUALITY AND CONTROL

 

SUBOR Control Testing 
 
SUBOR GRP Pipes are designed, manufactured and tested in accordance with AWWA and ASTM standards today.SUBOR GRP Pipes also meet specifications of ISO, EN, BS, DIM and Turkish TSE standards.

SUBOR's quality management system was certified under the ISO 9001 Standard in August 1999 by the German Quality Organisation DQS. SUBOR has also proven its environmental awareness by having the ISO 14001 "Environmental Management System" Certificate

SUBOR GRP Pipe Technology process represents the most advanced technology in use, and is foremost method of manufacturing glass reinforced plastic pipe.SUBOR pipe is manufactured with a proven process, "Continuous Filament Winding Method", using glass fiber reinforcements, thermosetting polyester resins and a sand filler as the basic raw materials,forming a dense composite laminate.
SUBOR GRP Pipes are designed, manufactured and tested in accordance with AWWA and ASTM standards, the most comprehensive and widely used standards today.SUBOR pipe is manufactured with a proven GRP Pipes also meet specifications of ISO, EN, BS, DIN, and Turkish TSE standards.

Potable Water Approvals

SUBOR  GRP pipes are tested and approved for the conveyance of potable water in Turkey by Turkish Health Institute "T.C. Sağlık Bakanlığı, Hıfzısıhha Enstitüsü".

SUBOR  GRP pipes are manufactured with exactly the same process, materials and composition of pipes produced elsewhere that are tested and approved for the conveyance of potable water meeting many of the world's leading authorities' and testing institutes' criteria, including:

 ·         NSF (Standard No. 61) - United States 

·        TZW - Germany

·         Lyonnaise des Eaux

·        KIWA - The Netherlands

·        WCR - United Kingdom

SUBOR  GRP pipes have rapidly gained acceptance due to their superior characteristics and benefits and are now widely used in Turkey and also in some other countries where they are exported. SUBOR pipes are replacing pipes made of conventional materials for many applications such as potable water, irrigation and sewer; as is the case for the whole world for pipes manufactured with the same technology as SUBOR 's.

Raw Material Tests

Raw materials are delivered with vendor certification demonstrating their compliance with SUBOR quality requirements; in addition, all raw materials are sample tested prior to their use.

Major Materials that are tested in our Labaratories;

 ·  Polyester Resin
 ·  Glass Fiber Products (Continuous Glass Fibers, Fiber Chops,Surface  Mat,Woven Rowing Glass Fiber)
 ·  Filler Materials
 ·  Additional Chemicals
 ·  Gaskets and Stoppers
 ·  Other Materials

Process and Product Control tests
With reference to International Standards below;

·  AWWA C-950

·  ASTM D 3754

·  ASTM D 3517

·  ASTM D 3262

·  BS 5480

·  DIN 16868 

·  TS 4355

·  TS prEN 1115


All pipes are subjected to the following control checks in SUBOR labaratories.
·  Visual Inspection
·  Barcol Hardness
·  Wall Thickness
·  Section Length
·  Diameter
·  Hydrostatic Leak Tightness Test to twice rated pressure (only PN6 and above)

 

On a sampling basis, the following control checks are performed:

·  Pipe Stiffness
·  Deflection without damage or structural failure
·  Axial and Circumferencial Tensile Strength Tests
 
 Rigidity Test:

CTP boruların dış yüklere karşı dayanımlarının belirlenmesi için kullanılan bir test metodudur.

 Circumferencial Tensile Strength Tests:

To test the circumferencial pressure capacity of the pipe.

 Barcol Hardness Test:
The test in order to find the degree of curing of the pipe.

Hydrostatic Pressure Test:

Every pipe produced in SUBOR exposed to  twice of its nominal pressure.  

 Composite Test:
To test the raw materials as if they have the same values of suppliers.

Axial Tensile Strength Tests

 
Long Term Testing 
Long Term tests aim at determining the design criteria of the pipe and long term material properties. SUBOR performs the following tests in its labaratories in its modern manufacturing plants.
 

 
Strain Corrosion Test:
Hydrostatic Design Basis (HDB)

Initial Ring Deflection:

Ring Bending Test: