What are the requirements regarding the permanence of markings under the new fitting standards 12459-2017 and 13401-2017?

2018-08-01View Original

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Articles 9.1 of the standards GB12459-2017 and 13401-2017, issued in 2017, explicitly require permanent markings to be applied to fittings. However, new fittings such as elbows and tees still use painting as a method for marking them – does this not comply with the requirements of the new standards? So, are there any other methods of marking permanent identifiers besides steel stamps?

Reply #22018-08-01

This is similar to a steel stamp too; is painting it unacceptable?

Reply #32018-08-01

For titanium materials on our end, electrical corrosion marking is used.

Reply #42018-08-02

This is fundamentally different from a steel stamp. . .

Reply #52018-08-02

1. Laser or pneumatic marking machine 2. Chemical etching

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What are the requirements regarding the permanence of markings under the new fitting standards 12459-2017 and 13401-2017?

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