Products:Stainless steel lost wax casting screwed pipe fitting. Material:AISI(304,316), ASTMA351(CF8M,CF8) Threads:AISI, B1.20.1, BS21, DIN2999/259&BSP&BSPT, NPT Pressure:150PSI Temperature: -60 ~ 450 F Size: 1/8"-4" PRICE OF UNION CONICAL BUTT-WELD( USD FOB) size Price:(ss304) 1/8" 0.92 1/4" 1.19 3/8" 1.24 1/2" 1.75 3/4" 2.54 1" 3.60 11/4" 5.29 11/2" 6.69 2" 9.18 21/2" 13.84 3" 16.29 4" 20.47 Price will be higher 10% if type 316