Aloha, fun & authoritative answers -- no cost, no registration, no passwords, no popups
(as an eBay Partner & Amazon Affiliate we earn from qualifying purchases)

Where the
world gathers for metal finishing
Q&As since 1989

-----

Surface finish Symbols

Hi ! Can anyone help me getting "Surface Texture Symbols"(specially DIN stds.) ? Thank you.

Umang A Chavadia
Larsen &Toubro Limited Surat, Gujarat (India)
1999

Could you please provide me a full explanation of the iso standard of surface finish using the Ra, Rma and Rz symbols?

Thanks.

Amos Porat
-Haifa, Israel
2001

I have an SOI A-1 surface finish called out on a drawing and don't know what that corresponds to or how to measure it. Can anyone help?

Randy Kelch
- Ann Arbor, Michigan
2002

Go to

http://www.predev.coml/smg/specification.htm

This will give you full explanation.

If not try searching Google for "Surface Finish Symbols"

Hope this helps

R

Ray Taylor
- Spain
2006

Q. I would like to know the following surface finish symbol

Ra 0.2√ ED

The above symbol is mentioned on one of the Engineering drawing.

Please help how to read.

Krishnam Raju
- Hyderabad-India
December 10, 2012

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: