DTI Philippine National Standard Pns No. 6572008 (2008)
HOT-ROLLED STEEL SECTIONS - EQUAL-LEG ANGELES - SPECIFICATIONS
(NAR) VOL. 19 NO. 2 / APRIL - JUNE 2008
[ DTI PHILIPPINE NATIONAL STANDARD PNS 657:2008, May 09, 2008 ]
HOT-ROLLED STEEL SECTIONS - EQUAL-LEG ANGELES - SPECIFICATIONS
Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City