250 NB, 9.5 mm thick MS ERW or SAW pipes of grade Fe410 as per IS 3589 or API-5L Gr. B, 400 NB, 7.1 mm thick MS ERW Pipes of grade Fe410 as per IS 3589, 450 NB, 7.1 mm thick MS ERW or SAW pipe of grade Fe410 as per IS 3589, 500 NB, 8.8 mm thick MS ERW or SAW pipe of grade Fe410 as per IS 3589, 500 NB, 9.5 mm thick MS ERW or SAW pipes of grade Fe410 as per IS 3589 or API-5L Gr. B, 650 NB, 8.8 mm thick MS ERWor SAW pipe of grade Fe410 as per IS 3589
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