CLASS 150 Investment casting Screwed stainless steel pipe fittings ISO 9001:2008 Certificated Company CLASS 150 Investment casting threaded stainless steel pipe fittingSize: NPS From 1/8 inch To 4 inch; DN From 6 To 100;Investment casting process;Material: ASTM A312 (304, 304L, 316, 316L); DIN 2462 (1.4301, 1.4306, 1.4401, 1.4404); JIS G3463 ( SUS 304TB, SUS 304LTB, SUS 316TB, SUS 316LTB) and etc ...