STEEL COUPLING 1) Materials: 304, 304L, 316, 316L, 321 2) Forming type: mandrel-forming 3) Standards: ASME B16.9,MSS SP ... ) Materials: 304, 304L, 316, 316L, 321 2) Forming type: mandrel-forming 3) Standards: ASME B16.9,MSS SP-43 ... ISO9001:2008 Payment terms: L/C,T/T Delivery timeAfter receive the L/C,T/T 25-35 days Promise ... Ordering1) Pipe size2)Thickness3)Thread type4)Finish5)Quantity Steel Coupling