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    Date: 2023-03-16 11:22:06.427931


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    Date: 2023-03-17 13:10:33.499665

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color coding of pipes and cylinders

Requested from DENR by M. Halog III at 11:22 AM on Mar 16, 2023.
Purpose: proper color coding of pipes and cylinders
Date of Coverage: 03/16/1990 - 03/16/2023
Tracking no: #DENR-938944310718

Halog III 11:22 AM, Mar 16, 2023

Good day,

May I ask if there is specific standard requiring a color coding for piping and/or cylinders of compressed gases? Example; oxyen, acetylene, argon, hydrogen etc.

Thank you in advance for your assistance

DE LAYOLA 01:10 PM, Mar 17, 2023

Mar 17, 2023

Dear Mariano Halog III,

Thank you for your request dated Mar 16, 2023 11:22:06 AM under Executive Order No. 2 (s. 2016) on Freedom of Information in the Executive Branch, for color coding of pipes and cylinders.

We received your request on Mar 16, 2023 11:22:06 AM and we have forwarded your request to another agency.

Should you have any questions regarding your request, kindly contact using the reply function on the eFOI portal at, for request with ticket number #DENR-938944310718.

As part of our evaluation of our services, we would like you to completely and honestly answer our client request  feedback at

Thank you.

JOCELYN B. DE LAYOLA                                                                                                                                          FOI Officer/OIC-Chief
Records Management Division
DENR Central Office
Tel. No. (02) 8926-8079
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