DESIGN AND MANUFACTURING STANDARDS
Design and manufacturing according to BS 1873, ASME B16.34, GB 12235, API623
Face to face as per ASME B16.10
End dimension according to ASME B16.5, ASME B16.25, GB/T 9113, GB/T 12224
Inspection and test according to ISO5208, API598, BS 6755, GB/T 26480, GB/T 13927
