stainless steel reducing union tee Material:stainless steel (304,304L,316,316L,321,321H,310S,347H) stainless steel reducing union tee1):Material:stainless steel(304,304L,316,316L,321,321H,310S,347H)2):Seamless tee:size 1/2 inch-20inch3):Butt welded tee:1/2 inch-40inch4):wall thickness:sch5s-sch1605):Standard:ASME/ANSI B16.9,GB/T 12459,GB/T13401,SH3408,SH3409.