... tube used in Chair frame assembly parts 1.Material:steel tube 2.Finish:power coating 3.Tolerance:0.5-1mm steel tube used in Chair ... , turning,tube bending, welding, milling, CNC lathe…4) usage of products: Furniture fitting, construction hardware , telecom ,auto,machine…5) ... are s professional stamping hardware manufacturer; 2. Our company is founded in 1998, there are more than 10 years; 3. Main ...