Inspection Process details are as as follows :
1. Inspection of raw materials
1.1 Tensile test on stain of steels
2. General inspection of pipes
2.1 Staingtenning inspection of pipes
2.2 Surface inspection
3. Size inspection
3.1 Size inspection of pipe diameter
3.2 Inspection of pipe length
3.3 thickness inspection
3.4 Weight inspection
4. Pressure testby HYDROSTATIC
PRESSURE TEST
5. Machinical testing
5.1 Bending test
5.2 Flattening test
5.3 Expansion test
6. Threaded end inspecting by
THREADEDRING GAUGE