Profile: SGS Manufacturing, Inc. specializes in producing products for natural gas industry. Our products include meter swivels, meter loops & bends, meter nut plugs, meter guard, meter bars, lockwing gas meter valves, connection nuts, insulated unions, swivel washers, blind discs, dust caps and penetrometer. Meter swivels include insulated, straight, straight reducing, 90° elbow, offset and offset reducing swivels. Blind discs are used for gas meter connection.