Flange with hydraulic flange

Material: carbon steel, S25C, ASTM A105, 20 #, SGD4K; stainless steel: US304, SUS304L, SUS316, SUS316L, SUS321.
Carbon Product Name: Hydraulic Flange / Hydraulic Square Fflange
Dimensions: 3/8 "to 4"
Pressure Rating: PN10MPa,hydraulic hose sleeve PN16MPa, PN21MPa, PN28MPa, PN35MPa
Connection: FA-LA, FA-HA/HB, FA-SA/SB, FA-YA/YB, FA-ZA/ZB
Hydraulic Flange Material: Carbon steel: S25C, ASTM A105, 20 #, SGD4K; stainless steel: SUS304, SUS304L, SUS316, SUS316L, SUS321
Manufacturing process: cutting, heat treatment, forging, machining
Manufacturing standards: JB/ZQ4187-97, JB/ZQ4485-97, JB/ZQ4486-97, JB/ZQ4487-97, JB/ZQ4488-97, JB/ZQ4489-97
∷ Hydraulic Flange Standard No.
1. JB/ZQ4187-97A-type split high pressure flange;
2. JB/ZQ4187-97B-type split high pressure flange;
3. JB/ZQ4187-97C-type split high pressure flange;
4. JB/ZQ4187-97D-type split high pressure flange;
5. JB/ZQ4187-97E-type split high pressure flange;
6. JB/ZQ4187-97F-type split high pressure flange;
7. JB/ZQ4485-97 high pressure flange;
8. JB/ZQ4486-97 straight flange;
9. JB/ZQ4487-97 angle flange;
10. JB/ZQ4488-97 intermediate flange;
11. JB/ZQ4489-97 flange;
12 convex welded steel flanges (according JB/T82.1-94);
13 welded steel flange dimensions (PN = 6.3Mpa) (JB/ZQ4461-97);
14 welded steel flange dimensions (PN = 10Mpa) (JB/ZQ4462-97);
15 welded steel flange dimensions (PN = 15Mpa) (JB/ZQ4463-97);
16 welded steel flange dimensions (PN = 25Mpa) (JB/ZQ4464-97);
17 welded steel flange dimensions (PN = 31.5Mpa) (JB/ZQ4465-97);
18 welded steel flange dimensions (PN = 40Mpa) (JB/ZQ4466-97);
19 steel plate welded convex flange (according JB/T81-94);
20. Convex steel pipe flange cover (according JB/T86.1-94);
21 convex steel flange cover (PN = 6.3Mpa) (JB/ZQ4483-97);
22 convex steel flange cover (PN = 10Mpa) (JB/ZQ4484-97).