Industry tee ,equal tee ,reducing tee Material:stainless steel (304,304L,316,316L,321,321H,310S,347H) Industry tee ,equal tee ,reducing tee Material:stainless steel(304,304L,316,316L,321,321H,310S,347H)Seamless tee:size 1/2 inch-20inchButt welded tee:1/2 inch-40inchwall thickness:sch5s-sch160Standard:ASME/ANSI B16.9,GB/T 12459,GB/T13401,SH3408,SH3409.