Pipe expanding equipment for composite steel pipe lined with stainless steel

• Main Authors: YANG CHANGSONG, DENG ZHICHANG, LUO XUCHENG, LIU JINGDU, LUO FENG, YI XIUXIAN
• Format: Patent
• Language: Chinese; English
• Published: 24.12.2021
• 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 pipe expanding equipment for a composite steel pipe lined with stainless steel, which comprises a rack, a roller used for supporting the composite steel pipe is arranged on the rack, a water injection sealing plug is arranged at one end of the rack, an exhaust sealing plug is arranged at the other end of the rack, and the water injection sealing plug and the exhaust sealing plug are oppositely arranged. The water injection sealing plug and the exhaust sealing plug are respectively driven by a driving device to move back and forth; a water injection passage for introducing water into the composite steel pipe is arranged in the water injection sealing plug, a normal-pressure water injection port and a high-pressure water injection port are formed in the water injection sealing plug, and the normal-pressure water injection port and the high-pressure water injection port are respectively communicated with the water injection passage; an exhaust passage used for exhausting gas in the co