Looking for a high-quality forged carbon steel flange factory? Look no further than LANDEE! Our flanges are 6 inches in size (DN150), with a Class 150 LB rating and PN20 pressure rating, and are manufactured to ASTM A105 and ANSI B16.5 standards. They also feature a durable FBE coating for added protection. Trust LANDEE for all your flange needs!