1. Inspection before production

·          Raw material inspection including, destructive and non-destructive testing of hot rolled steel coils, electrode, welding flux and coating materials.

·         Visual inspection of raw material including, hot rolled steel coils, electrode and welding flux.

·         Ultrasonic test of both ends of coils. (Customer's request)

2-Inspection During production

·         Welding Procedure Specification (WPS) and Procedure Qualification Record (PQR) will be prepared routinely

·         Actual coil thickness will be checked by ultrasonic equipment

·         On-line test for 100% weld seam.

·         WSP control

3-Inspection after production

·         Ultrasonic test of skelp and weld

·         Hydrostatic test

·         Mechanical testing of weld seam and pipe body including tensile, bending and impact test

·         Magnetic particle test, liquid penetration test and radiographic test.(customer request)

·          inspection of coating including thickness and adhesion as well as Holiday detection

TEST PRESSURE ( BAR )