QingDao Ostar has 20 years for professional manufacture of flanges,fittings,and pipe in China.The flange factory was founded in 1988.Best quality products has been sold for around the world and are very popular with vast number of customers in the international market such as Europe, Africa Asia,especially in the

Middle East.Our factories can provide various size of carbon steel flanges,elbow,tee,carbon steel pipe.Ostar has Honest and Credit.

For the properous market  and global exchange,friends form all over the world are welcomed to our company for cooperation.