Specifications of carbon steel flange:

1) Sizes: from DN10 to DN3000; 
2) Material: carbon steel, stainless steel and alloy steel; 
3) Standard: ANSI, DIN, EN1092-1, NFE, AS, JIS and customers' drawings for special   use
4) Types: WN, SO, BL, Plate, Thread, Socket and etc.  
5) Process: free forging, plate cutting; 
6) Packing: in wooden cases, wooden pallets or as per customers' special requirement;
7) Delivery: usually within one month after receiving the formal order; 
8) Inspection: factory in-house or Third Party inspection available upon request