Brass clamp ring hexagonal or round type Specifications Used in plumbing or industrial machine. Made by numerically controlled lathe. All general sizes for clients to choose. Item name: brass clamp ring Material: brass bar, brass pipe. Size: 1/8" 1/4" 3/8" 1/2" 3/4" 1" Technology: cutting by numerically controlled lathe. Surface treatment: plated or pickling. Thread type: npt, bspp, bspt and so on standard thread. Use: use for plumbing, sanitary ware, machine part and so on. Customized services, laser marking