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1. (WO2018177020) METHOD FOR MANUFACTURING CLAD STEEL PIPE

Pub. No.:    WO/2018/177020    International Application No.:    PCT/CN2018/074674
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Feb 01 00:59:59 CET 2018
IPC: B23P 15/00
Applicants: BAOSHAN IRON & STEEL CO., LTD.
宝山钢铁股份有限公司
Inventors: JIAO, Sihai
焦四海
YAN, Bo
闫博
ZHOU, Cheng
周成
Title: METHOD FOR MANUFACTURING CLAD STEEL PIPE
Abstract:
A method for manufacturing a clad steel pipe, for use in manufacturing a clad steel pipe by using a clad steel plate as a raw material. The clad steel plate comprises a base layer (1) and a cladding layer (2) which is combined with the base layer (1) by means of rolling. The method for manufacturing a clad steel pipe comprises the steps of forming, welding, and deburring; two edges of the clad steel plate is bent towards the base layer (1) side of the clad steel plate, then the forming step is carried out, and after the forming step, the entire opening surface of the pipe blank is the cladding layer (2). According to the method for manufacturing a clad steel pipe, a clad steel pipe is manufactured by using a clad steel plate as a raw material. Thus, continuance and high efficiency of a high frequency straight seam welded pipe making machine set is fully utilized, subsequent non-continuous processes are not increased, and the corrosion resistance at the weld seam of the clad steel pipe is ensured.