1. AISI 316/ ASTM-A351-CF8M/ SCS14.
2. AISI 304/ ASTM-A351-CF8/ SCS13.
3. S-20C/ ASTM-A216-WCB.
1. Size: 1/2"~12", flanged end. 2. Rating: AISI 150lbs/ JIS 10k. 3. Design: ANSI B16.34. 4. Testing: API 598. 5. Option: rating AISI 300lbs/ JIS 20k / PN16.