... mm, wall thickness of 2.2 mm, quality and technical standard of which have met the requirements of BS1387-1985 standards ... , with bores of 6 mm in diameter. Conforming to the European standards of EN1176, the platform owns a strong bearing capacity ... , 28mm, wall thickness of 2.5 mm, quality and technical standard of which have met the requirements of BS1387-1985 standards ...