SS304 304L,316L Stainless steel Bolted Blank vacuum flange

Flange Type:                                   
Weld Neck, Slip On, Blind, Plate, Thread, Socket Weld, Lap Joint, Ring Joint, Orifice Flange, Spectacle Blind, Paddle Spacer and Blank Flange, Figure 8 Flange, etc;
                                    
Face: Raised Face (RF),Flat Face(FF), Ring Joint (RTJ)  
                                    
Material:                                  
Carbon Steel:   Q235,20#,A105, ST37.2,C22.8, S235JR,P250GH,A350 LF1,LF2 CL1/CL2 LF3 CL1/CL2, ASTM A694 F42,F46,F48,F50,F52,F56,F60,F65,F70
Stainless Steel: A182 F304/304L, F316/316L, F316H,F316Ti,F321,F44(UNS S31254)
Ally Steel:          A182 F1,F5/a,F9,F11,F12,F22,F91  
Duplex Steel:    A182 F51/UNS S31803,F53/UNS S32750 F55/UNS S3260
Special Alloy:   ,C95400,C95500,C95800,Monel400,Inconel 600, Inconel 625, Inconel 800, Inconel 825
                                    
Standard:                                
ASME: ANSI/ASME B 16.5,ASME B16.36,ASME B16.47 Series A(MSS SP-44);ASME B16.47 Series B(API 605),AWWA C207
DIN:          Plate(DIN2573,2576,2502),Blind(DIN2527),Loose(DIN2641-2676),Welding-Neck (DIN2627-2638), Threaded (DIN2565 2566 2567) ,Slip-On (DIN86029 86030)
EN:  EN1092-1                           
JIS:  JIS B2220                          
UNI:          UNI2253-2278,UNI6083,UNI6084,UNI2280,UNI2281-2286, UNI6091-6097
GOST: GOST12820-80, GOST12821-80 
BS: BS 4504,BS10-1962,BS3293-1960 
                                    
Pressure:                                 
ANSI:Class 75, Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500
DIN:PN 6,PN 10,PN 16,PN 25,PN 40                 
EN:PN 6,PN 10,PN 16,PN 25,PN 40               
JIS:1K,2K,5K,10K,16K,20K,30K,40K,63K ;                  
GOST:PN 6,PN 10,PN 16,PN 25,PN 40,PN63,PN100,PN160                   
BS:TABLE D E                                    

 Machining Tolerance:  From 0.005mm-0.01mm-0.1mm As Standard.

Machined Surface Quality: Ra 0.8-Ra3.2 according to customer requirements

Production Process:
Forging-Heat Treatment-Machining (rough machining and finish machining)-Drilling-Inspect-Stamp-Packing

Heat Treatment: Solution, N+T (Normalizing + Tempering), Q+T (Quenching + Tempering)


Surface Treatment                
Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.                                   
Usage: 
Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
Package: seaworthy plywooden case, wooden pallet