A compound pipe for pushing away make type elbow

• Main Authors: TONG LU, HAN LIQIANG, YE JIANLIN, JI TENGFEI, WANG YAHUI, SU BIN, YUAN MINZHE, XI DALAI, LI NING, SUN WANCANG, HE XUMING
• Format: Patent
• Language: English
• Published: 24.02.2016
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The utility model discloses a compound pipe for pushing away make type elbow, including the pipe, suit in the overcoat steel pipe and suit in the inboard inside lining steel pipe of pipe in the pipe outside, be provided with first step on the one end inner wall of overcoat steel pipe, be provided with the second step on the one end outer wall of inside lining steel pipe, first step and second step are located the both ends of compound pipe respectively, the pipe is arranged in the space that forms between first step and the second step. The utility model discloses novel structure, reasonable in design, it is reliable practical, through setting up overcoat steel pipe and inside lining steel pipe respectively in the pipe outside and inboard, increased the system that the pushes away area at rare metal pipe both ends, the phenomenon of slippage very easily appears when having avoided pushing away the system owing to non ferrous metal pipe thickness is thin, increased the rigidity of rare metal pipe, the phenomenon of the unable normal drawing of patterns on the mould swell, fold appear, pile up or even wraps up in the part when effectively having avoided pushing away the system.