●GB/T27684GB/T12459GB/T14383GBT13401HG21634SH3408SH3409SH3410ASME/ANSI B16.9/16.11/16.28WIS B2311/2316/2220DIN2617/2616/2615
材料:钛、锆、钽、镍、镍基合釐/p>
规格:DN15~DN2000