Business
Quality Certificate
| Category | Description | Certi. Object | Issued date | Certi. Authority |
| Quality Management sys. | ISO 9001:2000 | Steel piping & Structure | 1999.11.10~ | KSA-QA |
| Quality Management sys. | ISO 9001:2000 | Steel piping & Structure | 1999.11.10~ | KSA-QA |
| Quality Environment sys | ISO 14001:2009 | Steel piping & Structure | 2014.09.15~ | KSA |
| Quality Innovation | Single-PPM | ENGINE PIPE of Shipping (Class) | 2007.01.25~ | Single-PPM Administration |
| INNO-BIZ(A class) | SEDONG pre & mfg co., Ltd. | 2007.04.06~ | Small & Medium business Administration | |
| Shop Approval | Approval for welding shop | SEDONG pre & mfg co., Ltd. | 1999.02.26~ | G.L |
| Welding Approval | Approval for WPS Approval for Welder | GTAW/GTAW+FCAW/FCAW 15person | 1989~1991~ | GL, LR, BV |
| DNV, ABS | ||||
| NK, KR, RINA | ||||
| 2004.10.28 | CCS | |||
| Welding Approval | WPS & Welder (C/S, S/S, A/S) | GTAW, FCAW, GT+FC 6person | 2012.10.10~ 2013.09.10~ | Posco e&c |
| Welding Approval | WPS & Welder (C/S, S/S, A/S) | GTAW, FCAW, GT+FC 9person | 2014.09.20 | Posco engineering |