The ASTM A182 F51 slip-on flange, manufactured in China, is made from duplex stainless steel, featuring ANSI B16.5 standards. It has a 3/4-inch size (DN20) with a Class 150 LB and PN20 pressure rating. With a SCH STD thickness and raised face, this flange ensures secure, leak-proof connections, making it ideal for applications requiring corrosion resistance and strength.