OSTAR GROUP is a well established and professional manufacturer of high pressure flanges & pipe fittings, having the 20 years of experience in the same field. The flange factory was founded in 1998. The fittings factory was founded in 2012. Located in Mengcun County knows as hometown of pipe fittings in Hebei, China. Covering an area of 660,000 square feet. Produce 1200 tons for flange and 1000 tons for fittings per month.