Sigma scientific glass pvt. ltd is the leading ISO 9001:2000 certified manufacturer company engaged in manufacturing of borosilicate glass 3.3 industrial process equipments, process plants and mini-pilot plants in india for chemical industry since one decade. All our glass equipment comply with ISO 3585/3586/3587 for SIGMA FLAT BUTTRESS ENDS DN 25 to DN 600 and find extensive use in the construction of complete glass process plants/mini-pilot plants in the chemical process industry.