... Top Grade Hastelloy C276,B2,C4,C22,C2000,Monel400 Bolts, Nuts,Washers,Flanges,Screws with competitive price Jiangsu Luna Special ... Ltd is a professional manufacturer of high quality hastelloy bars, bolts, nuts, washers,screws and flanges with various grade and sizes. ... C2000 JIS 5k,10k We also can produce non-standard bolts,nuts according to customers requests. Warmly welcome customers from worldwide ...