# For Cu Ni 90/10 pipe routed inside the water ballast tank

**URL:** https://forum.gcaptain.com/t/for-cu-ni-90-10-pipe-routed-inside-the-water-ballast-tank/15981
**Category:** Professional Mariner Forum
**Created:** [March 13, 2016, 8:41am UTC](https://forum.gcaptain.com/t/for-cu-ni-90-10-pipe-routed-inside-the-water-ballast-tank/15981 "2016-03-13T08:41:42Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![shunmugapriyan](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shunmugapriyan](https://forum.gcaptain.com/u/shunmugapriyan)
#### Post date: [March 13, 2016, 8:41am UTC](https://forum.gcaptain.com/t/for-cu-ni-90-10-pipe-routed-inside-the-water-ballast-tank/15981/1 "2016-03-13T08:41:42Z")

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Dear Expert,

Kindly let us know the following questions answer,

1. For Cu Ni 90/10 pipe routed inside the water ballast tank, so what type of joint is suitable & acceptable as per class rule.

2. For Cu Ni 90/10 pipe flange and other material is NAB as per owner technical specification, let me know what is the reason there selection NAB materials for fittings?

Regards,

Mani.P