STEEL COUPLING 1) Materials: 304, 304L, 316, 316L, 321 2) Forming type: ... ,DIN 2605,JIS B2313,GB/T 12459, GB/T 13401,SH 3409,SH 3409,HG/T 21635,HG/T 21631 4) Sizes: seamless:1 ... Certification ISO9001:2008 Payment terms: L/C,T/T Delivery timeAfter receive the L/C,T/T 25-35 days Promise According to your ... reply! Ordering1) Pipe size2)Thickness3)Thread type4)Finish5)Quantity Steel Coupling