Title:
MANUFACTURING TECHNIQUE OF SEAMLESS STEEL PIPE
Document Type and Number:
WIPO Patent Application WO/2009/030105
Kind Code:
A1
Abstract:
A manufacturing technique of seamless steel pipe comprises process steps as
follows, producing a hollow blank pipe(1) with annular cup bottom(2) at one end
by centrifugal casting, executing machinework on the inner and outer surface
of the hollow blank pipe(1), then heating said hollow blank pipe(1), rolling
the heated hollow blank pipe(1) by a push bench rolling method so as to produce
satisfied pipe diameter, length and wall thickness, cutting and sizing the pipe
after loosing and removing rod from said pipe, finally certified pipe being finished.
This process can economize energy and cost.
Inventors:
LIU, Huaiwen (No.1004 Building 36, China Lron & Steel Research Iustitute Group Haidian, Beijing 1, 100081, CN)
刘怀文 (中国北京市海淀区钢铁研究总院36号楼1004室, Beijing 1, 100081, CN)
ZHU, Yubao (No.42 Group 26, Xinkai Cun Daxin Tow, Zhangjiagang Jiangsu 0, 215600, CN)
朱玉宝 (中国江苏省张家港市大新镇新凯村第二十六组42号, Jiangsu 0, 215600, CN)
MA, Xiaomei (No.701 Building 1 West, Zhongkuang Dormitory Haidian, Beijing 0, 100080, CN)
马晓梅 (中国北京市海淀区中矿家属宿舍西一楼701室, Beijing 0, 100080, CN)
SUN, Dekuan (No.407 Building 1 West, No.76 South Xueyuan RoadHaidian, Beijing 1, 100081, CN)
孙德宽 (中国北京市海淀区学院南路76号1楼西门407号, Beijing 1, 100081, CN)
刘怀文 (中国北京市海淀区钢铁研究总院36号楼1004室, Beijing 1, 100081, CN)
ZHU, Yubao (No.42 Group 26, Xinkai Cun Daxin Tow, Zhangjiagang Jiangsu 0, 215600, CN)
朱玉宝 (中国江苏省张家港市大新镇新凯村第二十六组42号, Jiangsu 0, 215600, CN)
MA, Xiaomei (No.701 Building 1 West, Zhongkuang Dormitory Haidian, Beijing 0, 100080, CN)
马晓梅 (中国北京市海淀区中矿家属宿舍西一楼701室, Beijing 0, 100080, CN)
SUN, Dekuan (No.407 Building 1 West, No.76 South Xueyuan RoadHaidian, Beijing 1, 100081, CN)
孙德宽 (中国北京市海淀区学院南路76号1楼西门407号, Beijing 1, 100081, CN)
Application Number:
CN2008/001518
Publication Date:
March 12, 2009
Filing Date:
August 22, 2008
Export Citation:
Assignee:
LIU, Huaiwen (No.1004 Building 36, China Lron & Steel Research Iustitute Group Haidian, Beijing 1, 100081, CN)
刘怀文 (中国北京市海淀区钢铁研究总院36号楼1004室, Beijing 1, 100081, CN)
ZHU, Yubao (No.42 Group 26, Xinkai Cun Daxin Tow, Zhangjiagang Jiangsu 0, 215600, CN)
朱玉宝 (中国江苏省张家港市大新镇新凯村第二十六组42号, Jiangsu 0, 215600, CN)
MA, Xiaomei (No.701 Building 1 West, Zhongkuang Dormitory Haidian, Beijing 0, 100080, CN)
马晓梅 (中国北京市海淀区中矿家属宿舍西一楼701室, Beijing 0, 100080, CN)
SUN, Dekuan (No.407 Building 1 West, No.76 South Xueyuan RoadHaidian, Beijing 1, 100081, CN)
孙德宽 (中国北京市海淀区学院南路76号1楼西门407号, Beijing 1, 100081, CN)
刘怀文 (中国北京市海淀区钢铁研究总院36号楼1004室, Beijing 1, 100081, CN)
ZHU, Yubao (No.42 Group 26, Xinkai Cun Daxin Tow, Zhangjiagang Jiangsu 0, 215600, CN)
朱玉宝 (中国江苏省张家港市大新镇新凯村第二十六组42号, Jiangsu 0, 215600, CN)
MA, Xiaomei (No.701 Building 1 West, Zhongkuang Dormitory Haidian, Beijing 0, 100080, CN)
马晓梅 (中国北京市海淀区中矿家属宿舍西一楼701室, Beijing 0, 100080, CN)
SUN, Dekuan (No.407 Building 1 West, No.76 South Xueyuan RoadHaidian, Beijing 1, 100081, CN)
孙德宽 (中国北京市海淀区学院南路76号1楼西门407号, Beijing 1, 100081, CN)
International Classes:
B22D13/02; B21B17/02; B21B23/00; B22D13/00; B21B17/00; B21B23/00
Attorney, Agent or Firm:
BEIJING GOLDEN BRIDGE IP AGENCY CO., LTD (A1008, Horizon International Tower No.6 Zhichun Road Haidian, Beijing 8, 100088, CN)
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