ZIZI ENGEERING, would like to take the opportunity to introduce as a leading ASME B16.5 weld neck flange. They are used for the oil, gas, petrochemical and allied industries. ASME B16.5 Standard ASME B16.5 standard covers pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flange and flange fittings. This […]