Advanced Steel Construction

Vol. 16, No. 2, pp. 181-190 (2020)




Fei Han *, Yun Wang, Tao Zhang, Qian Li and Yu Song

School of Mechancial and Materials Engineeing, North China University of Technology, Beijing, 100144, China

* (Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 13 January 2020; Revised: 26 April 2020; Accepted: 30 April 2020




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Different roll forming processes result in parts with different properties. This study compared the behavior of square tubes manufactured using two different processes, namely continuous and direct forming process, and then examined the yield strength, ultimate strength, residual stress, and metallography in different regions. Furthermore, finite element models of direct and continuous forming were developed, and the results obtained using these models agreed well with the experimental results. The yield and ultimate strengths of each part of the continuously formed square tube were higher than those of the directly formed square tube. The residual stress showed that different processes considerably affected the longitudinal residual stress but had a less significant effect on the horizontal residual stress. The residual stress due to continuous forming was higher than that due to direct forming. Microscopic tests showed that the weld seam of the continuously formed square tube exhibited greater plasticity and anti-impact toughness than that of the directly formed square tube. This study can serve as a guide to practical production and suitable process selection.



Roll forming, Material property, Residual stress, Metallography


[1] Huang Y. and Young B., “The art of coupon tests”, Journal of Constructional Steel Research, 96(6), 159-175, 2014.

[2] Kohar C.P., Mohammadi M., Mishra R.K. and Inal K., “Effects of elastic–plastic behaviour on the axial crush response of square tubes”, Thin-Walled Structures, 93, 64-87, 2015.

[3] Hu S.D., Ye B. and Li L.X., “Materials properties of thick-wall cold-rolled welded tube with a rectangular or square hollow section”, Construction and Building Materials, 25, 2683-2689, 2011.

[4] Sun M. and Packer J.A., “Direct-formed and continuous-formed rectangular hollow sections-comparison of static properties”, Journal of Constructional Steel Research, 92, 67-78, 2014.

[5] Li G.W. and Li Y.Q., “Overall stability behavior of axially compressed cold-formed thick-walled steel tubes”, Thin-Walled Structures, 125, 234-244, 2018.

[6] Li H.T. and Young B., “Material properties of cold-formed high strength steel at elevated temperatures”, Thin-Walled Structures, 115, 289-299, 2017.

[7] Davani R.K.Z., Miresmaeili R. and Soltanmohammadi M., “Effect of thermomechanical parameters on mechanical properties of base metal and heat affected zone of X65 pipeline steel weld in the presence of hydrogen”, Materials Science and Engineering: A, 718, 135-146, 2018.

[8] Pham T.H. and Kim S.E., “Nanoindentation for investigation of microstructural compositions in SM490 steel weld zone”, Journal of Constructional Steel Research, 110, 40-47, 2015.

[9] Luo X., Niu Y.W., Chen X.H., Tang H. and Wang Z.D., “High performance in base metal and CGHAZ for ferrite-pearlite steels”, Journal of Materials Processing Technology, 242, 101-109, 2017.

[10] Miura T., Ueji R., Fujii H., Komine H. and Yanagimoto J., “Stabilization of austenite in low carbon Cr–Mo steel by high speed deformation during friction stir welding”, Materials & Design, 90, 915-921, 2016.

[11] Shokrieh M.M., Jalili S.M. and Kamangar M.A., “An eigen-strain approach on the estimation of non-uniform residual stress distribution using incremental hole-drilling and slitting techniques”, International Journal of Mechanical Sciences, 148, 383-392, 2018.

[12] Li G.W., Li Y.Q., Xu J. and Cao X., “Experimental investigation on the longitudinal residual stress of cold-formed thick-walled SHS and RHS steel tubes”, Thin-Walled Structures, 138, 473-484, 2019.

[13] Acevedo C., Nussbaumer A. and Drezet J.M., “Evaluation of residual welding stresses and fatigue crack behavior in tubular K-joints in compression”, Stahlbau, 80(7), 483-491, 2011.

[14] Ma J.L., Chan T.M. and Young B., “Material properties and residual stresses of cold-formed high strength steel hollow sections” Journal of Constructional Steel Research, 109, 152-165, 2015.

[15] Li G.W., Li Y.Q., Xi J. and Cao X., “Experimental investigation on the longitudinal residual stress of cold-formed thick-walled SHS and RHS steel tubes”, Thin-Walled Structures, 138, 473-483, 2015.

[16] Liu X. and Chung K.F., “Experimental and numerical investigation into temperature histories and residual stress distributions of high strength steel S690 welded H-sections”, Engineering Structures, 165, 396-411, 2018.

[17] Yao Y., Quach W.M. and Young B., “Finite element-based method for residual stresses and plastic strains in cold-formed steel hollow sections”, Engineering Structures, 188, 24-42, 2019.

[18] Wen B.C. and Pick R.J., “Modelling of skelp edge instabilities in the roll forming of ERW pipe”, Journal of Materials Processing Technology, 41(4), 425-446, 1994.

[19] Li S.H., Zeng G., Ma Y.F., Guo Y.J. and Lai X.M., “Residual stresses in roll-formed square hollow sections”, Thin-Walled Structures, 47(5), 505-513, 2009.

[20] Ye Y., Zhang S.J., Han L.H. and Liu Y., “Square concrete-filled stainless steel/carbon steel bimetallic tubular stub columns under axial compression”, Journal of Constructional Steel Research, 146, 49-62, 2018.

[21] Yuan F., Huang H. and Chen M.C., “Effect of stiffeners on the eccentric compression behaviour of square concrete-filled steel tubular columns”, Thin-Walled Structures, 135, 196-209, 2019.

[22] Yang Z.Y., Zhao C.C., Dong G.J., Du B. and Zhang L., “Analytical model of corner filling with granular media to investigate the friction effect between tube and media”, International Journal of Advanced Manufacturing Technology, 99, 211–224, 2018.

[23] Amraei M., Jiao H., Zhao X.L. and Tong L.W., “Fatigue testing of butt-welded high strength square hollow sections strengthened with CFRP”, Thin-Walled Structures, 120, 260-268, 2017.