CARBON STEEL PIPE FITTINGS sand casting process CNC machining all mufacture up 2 ur drawings and samples ISO9001:2008 CARBON STEEL PIPE FITTINGSSAND CASTING OEM SERVICECompany introductionDalian Wills Machine Co. Ltd. is a private owned company specialized in supplying mechanical parts according to customer samples or drawings, we were a foundry before, but from the year 2006, we set up our own ...