Shi, Changshuai
Li, Jinping
Zhu, Xiaohua
Funding for this research was provided by:
the Southwest Petroleum University Drilling Tools Youth Technology Innovation Team (2018CXTD03)
International Science and Technology Cooperation of Chengdu City (2019-GH02-00034-HZ)
Basic Research Projects on the Application of Sichuan Science and Technology Plan (19YYJC1058)
Article History
Received: 15 August 2020
Accepted: 7 December 2020
First Online: 5 June 2021
Compliance with ethical standards
:
: Because the research of this paper is hydraulic forming spiral pipe, the research content of this paper does not involve ethical issues.
: We made it clear that consent to participate.
: The work described has not been published before (except in the form of an abstract or as part of a published lecture, review, or thesis); it is not under consideration for publication elsewhere; its publication has been approved by all co-authors, if any; its publication has been approved (tacitly or explicitly) by the responsible authorities at the institution where the work is carried out.The author agrees to publication in the Journal indicated below and also to publication of the article in English by Springer in Springer’s corresponding English-language journal.The copyright to the English-language article is transferred to Springer effective if and when the article is accepted for publication. The author warrants that his/her contribution is original and that he/she has full power to make this grant. The author signs for and accepts responsibility for releasing this material on behalf of any and all co-authors. The copyright transfer covers the exclusive right to reproduce and distribute the article, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. After submission of the agreement signed by the corresponding author, changes of authorship or in the order of the authors listed will not be accepted by Springer.Journal:Title of article: Liquid filling and external extrusion composite forming tiny size spiral tube with equal wall thicknessNames of ALL contributing authors: Changshuai Shi, Jinping Li, Xiaohua Zhu
: The authors declare that they have no competing interests.