●GB/T27684GB/T12459GB/T14383GBT13401HG21634SH3408SH3409SH3410ASME/ANSI B16.9/16.11/16.28WIS B2311/2316/2220DIN2617/2616/2615

　　● 材料：钛、锆、钽、镍、镍基合金

　　● 规格：DN15~DN2000