Certificates

Siam Steel Gratings Co., Ltd. / Factory 1

SGS, ISO 9001 :2008 “The manufacture of Galvanized Steel Gratings”, NAC

SGS, ISO 9001 :2008 “The manufacture of Galvanized Steel Gratings”, UKAS

Siam Steel Galvanizing

BSI, ISO 9001:2008 “The service of hop dip galvanizing”

SGS, ISO 9001 :2008 “The service of hop dip galvanizing”, NAC

SGS, ISO 9001 :2008 “The service of hop dip galvanizing”, UKAS

The Department of Science Service of MST, TEST REPORT “Zinc 99.9%”

Rayong Galvanizing Co., Ltd.

SGS, ISO 9001 :2008 “The service of hop dip galvanizing”, NAC

SGS, ISO 9001 :2008 “The service of hop dip galvanizing”, UKAS

The Department of Science Service of MST, TEST REPORT “Zinc 99.9%”

Siam Steel Tower Co., Ltd.

SGS, ISO 14001:2004 “Design and Manufacture of steel structure for transmission line, substation and communication tower”, NAC

SGS, ISO 14001:2004 “Design and Manufacture of steel structure for transmission line, substation and communication tower”, UKAS

SGS, ISO 9001:2008 “Design and manufacturing of substation steel structures, transmission line towers and telecommunication towers”, NAC

SGS, ISO 9001:2008 “Design and manufacturing of substation steel structures, transmission line towers and telecommunication towers”, UKAS