BS 12/30260512 DC
BS 12/30260512 DC
BS EN ISO 28721-4. Vitreous and porcelain enamels. Glass-lined apparatus for process plants. Quality requirements for glass-lined flanged steel pipes and flanged steel fittings. Part 4: Quality requirements for glass-lined flanged steel pipes used for process plants
standard published 06/14/2012 by British Standards Institution