SIGMA is a New Jersey, USA Corporation, in business since 1985. SIGMA’s core products have been Waterworks pipe fittings and accessories, in CI and DI, as per the AWWA/ANSI standards C110/A21.10 and C153/A21.53. We pioneered production of these pipe fittings in China starting in 1985 and since then we have steadily grown to be the second largest AWWA pipe fittings supplier in USA!
1301 Presidential Drive, Suite #200, Richardson, Texas, 75081, USA
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