**7. Conclusions**

In this paper, we computed various topological indices of Nanotubes. More precisely, we determined second multiple Zagreb index *PM*2(*G*), hyper-Zagreb index *HM*(*G*), first multiple Zagreb index *PM*1(*G*), and Zagreb polynomials *<sup>M</sup>*1(*<sup>G</sup>*, *<sup>x</sup>*), *<sup>M</sup>*2(*<sup>G</sup>*, *x*) for certain Nanotubes. We conclude that the the Zagreb indices are in increasing order as the values of *p*, *q* increase. In addition, the hyper Zagreb index gives a decent connection to the security of nonstructural objects and the stretched pharmacies, and for processing the strain vitality of Nanotubes. The first and second Zagreb polynomials are helpful to find the features of *π*-electron energy of the microscopic particles in the inner part of Nanostructural objects.

**Author Contributions:** Z. Shao contribute for conceptualization, designing the experiments, funding and analyzed the data curation. M.K. Siddiqui contribute for supervision, methodology, validation, project administration and formal analysing. M.H. Muhammad contribute for performed experiments, resources, software, some computations and wrote the initial draft of the paper which were investigated and approved by Z. Shao and M.K. Siddiqui and wrote the final draft. All authors read and approved the final version of the paper.

**Funding:** This research work is supported by Applied Basic Research (Key Project) of Sichuan Province under Grant No. 2017JY0095.

**Conflicts of Interest:** The authors declare no conflict of interest.
