INTERNATIONAL MATERIAL AND DESIGN STANDARD
1. Calculations & Production Drawing of Steel Structures
Standards ASCE 10-97, AISC (ASD & LRFD), EIA/TIA-222-F, EIA/TIA-222-G
Design Software Tower version 13.20
Detailing Software BOCAD 3 D Version 188.8.131.52
2. Materials: Steel Structures
Mild Steel JIS G3101 SS400, TIS 1227 SS400 or equivalent
High Strength Steel JIS G3101 SS540, TIS 1227 SS540, ASTM A572 Gr.50 or equivalent
3. Bolt, Nut and Washer
3.1 Inspection Routine ASTM A6
3.2 Bolts ASTM A394 Type 0, A325, JIS B1180 B18.2.1 or equivalent
3.3 Nuts ASTM A394 Type 0, A325, ASTM A563M Gr. A JIS B1181 or equivalent
3.4 Washers ANSI B 18.21.1, JIS B1251 FOR LOCK WASHER or equivalent
ANSI B 18.22.1, JIS B1256 FOR LOCK WASHER or equivalent
4. Fabrication & Dimension Inspection AISC
5. Welding AWS D1.1:2015
6. Hot Dip Galvanizing ASTM A123, ISO 1461 FOR STEEL MEMBERS
ASTM A153 Class C, D FOR BOLTS, NUTS, WASHERS
It is TSS responsibility to ensure that our products and service meet the customers' requirements. Hence, we establish quality assurance (QA) division which works independently and reports directly to General Manager to control and improve our products and service standard to meet international level.
Today, our quality management system complies with international Standard ISO 9001: 2015 (Design, Fabricate and Galvanize Steel Structures for Transmission Line Towers, Telecommunication Towers, Substation and General Steel Structures) certified by Bureau Veritas Certification with accreditation from UKAS of England and NAC of Thailand.
We also concern environmental impact to neighborhood hence we apply the Environmental Management System which complies with international Standards ISO 14001:2015 certified by Bureau Veritas Certification with accreditation from UKAS of England.
Moreover, we apply an Occupational Health and Safety Management Systems which complies with International Standards ISO 45001:2018 to eliminate or minimize risk in workplace and to improve work performance. ISO 45001 is certified by Bureau Veritas Certification with accreditation from UKAS of England.