Detailed Product Description Features:1) Design standards: API5992) Inspection and test standards: API 5983) Face-to-face: ANSI B16.10 4) Connection: ANSI B16.55) Size: 15 - 300, 1/2 - 12" 6) Class: 150LB, 300LB7) Temperature: -20 - 350oC8) Body: WCB, CFB, CF8M, CF3, CF3M