sand casting scaffold couplers scaffolding accessories swivel couplers standard: various, as ... Attn:Ms. Gaofei Address: No.89B1-1-1, Changjiang Dong Road, Dalian, China We supply various machining parts, nonstandard parts, ... buyers' drawing & requirements We can supply various casting parts, such as precision casting, sand casting, investment casting, and we can do heat treatment, galvanizing ...