Industrial screwed fittings Stainless steel fittings : 90'S / 45'S ELBOW, TEE, SOCKET, BUSHING, UNIONS, NIPPLE and more. Size : 1/2"~4" Grade : S.S. INVESTMENT CASTING 304 ( CF8 ), 316 (CF8M) "The Screwed : NPT, BS, BSP THREAD " Type standards : INCH 150PSI