TD-31050 is a two-station (OD Ø15–50 mm) hydraulic tube sealing machine that cold roll-spins gas spring and gas lift cylinder ends fully closed or with a center hole. The two stations cycle in turn for one-operator running – no heating, welding or plastic plug.
![]() Closed gas spring cylinders | ![]() Closed gas spring tube samples | ![]() Close-up of a dome end |
Every station is an independent unit. Run the same size on all stations for volume production (for example three stations on one size), or a different size on each station (three stations, three sizes) for small mixed lots. The dome radius and the hole diameter are adjusted separately on each station.
Since 1989, TONG DA closing machines have been shipped to gas spring and shock absorber manufacturers in Korea, the USA, Germany, Turkey, the UK, India and mainland China, with ongoing supply of jaw sets, guide tubes and hydraulic chucks. The machines are built to last: many have been running on customers’ production lines for more than 20 years and are still in stable production today.
USA / UK / India: tube end closing machine, tube closing machine, pipe end closing machine, tube sealing machine, pipe sealing machine, tube end sealing machine, roll closing machine, roll closure machine, tube spinning machine, spin closing machine. Turkey: boru ucu kapama makinesi, boru kapatma makinesi, boru ağzı kapama makinesi, boru sıvama makinesi. Brazil: máquina de fechamento de tubos, máquina de fechar ponta de tubo, máquina de repuxo de tubos, repuxadeira de tubos. Spain / Mexico: máquina cerradora de tubos, máquina de cierre de tubos, máquina de repulsado de tubos. China: 封口机、管端封口机、旋压封口机、热旋压封口机、旋压机. Taiwan: 封管機、封口機、金屬封管機、管端封口機、管端成型機.
How is it different from the TD-31040?
TD-31050 covers tube OD Ø15–50 mm, larger than the TD-31040 (Ø10–40 mm); both come as single-, two- and three-station sets. For automatic loading, see the auto-feeding TD-311.
How do I request a quotation?
Email OD, wall, material and end shape to sales@tdco.com.tw; sample closing is available.