Service. Speed. Smiles.
3S Co., Ltd. — a South Korean manufacturer of cable trays and pipe supports for ships and offshore plants. Delivering quality, reliability, and innovation to shipyards and offshore projects worldwide.
Three Words. One Promise.
The name is the commitment: Service, Speed, Smile. Here is what each one costs us — and what it earns you.
Service
that excelsOur engineers read your drawings before they quote. Product type, load requirement, surface finish, class rules — every specification is checked against the vessel it is going on, so what arrives is what the yard actually needed.
Speed
that impressesDiet trays can respond quickly to the customer’s order date, as productivity increases through the automation process.
Smiles
that lastA tray that is 20% lighter is easier to carry up a gangway, cheaper to ship, and kinder to fuel burn for the life of the vessel. Non-welded means no welding fumes for the people building it, either.
About 3S Co., Ltd.
3S Co., Ltd. operates three factories in South Korea’s Gyeongnam province — two in Uiryeong and one in Haman — producing cable trays and pipe supports for ships and offshore plants.
Alongside our standard cable tray lineup, 3S developed a proprietary non-welded cable tray — we call it the Diet Cable Tray. By eliminating welding through our roll-forming automation process, it achieves high production efficiency compared to conventional methods while reducing weight by up to 20%, without compromising load capacity. The result: measurable cost savings in materials, production time, and vessel fuel efficiency.
We supply Korea’s leading shipyards — including Hanwha Ocean, Samsung Heavy Industries, and HD Hyundai — as well as global owners, building an internationally trusted track record.
Sustainable by Design
Non-welded fabrication is more than an engineering innovation — it eliminates the hazardous gases produced by welding: ozone, metal fume, CO, NO₂, and argon.
- 01Improved worker health and safety
- 02Reduced fire risk on the production floor
- 03Lower environmental impact from manufacturing
- 04Contribution to carbon reduction goals
Our History
Established 3S (CEO Dong-sik Son)
Incorporated as 3S Co., Ltd. · Uiryeong No.1 Factory completed
ISO 9001 certified
Registered as a Hanwha Ocean 1st-tier sub-vendor
ISO 14001 certified
Patented “Cable tray and manufacturing process”
Registered as an HD Hyundai Samho 1st-tier sub-vendor
Uiryeong No.2 Factory completed
Awarded the Certificate of Accompanied Growth by the Ministry of Trade, Industry and Energy
Registered as an HD Hyundai Heavy Industries 1st-tier sub-vendor
Green Technology certified
Awarded a Presidential Citation for Green Management
Supplied Hanwha Ocean’s NOC project
Supplied Hanwha Ocean’s Petrobras and Chevron projects, and Samsung Heavy Industries’ ENI project
Multi-Razer Cutting Machine installation completed
ISO 45001 certified
Participated in Hanwha Ocean’s “Leviathan” project
International Certifications
How we build, what we build with, and how we keep our people safe — all three audited against the ISO standards.
ISO 9001Quality Management System 
ISO 14001Environmental Management System 
ISO 45001Occupational Health & Safety Management System 
PatentCable tray & manufacturing process
Approved by the Classes
Our cable trays and fabrication carry type approvals and design assessments from DNV, Bureau Veritas, Lloyd’s Register, ABS, and KIWA — with TRCU (Eurasian) and Korean Green Technology registrations on top.
Our Facilities
Most materials are self-cut, holed, and beveled in-house. Plate, shape steel, and flat bar all pass through our own machines before they reach the line.
EQP.01
Multi-Razer Cutting Machine
- Plate cutting size
- 8×20 (2,438 × 6,096 mm)
- Shape steel cutting size
- Pipe 200A below
EQP.02
F.B Beveling Machine
- Max thickness
- t50 mm
EQP.03
300 Ton Press with Forming Machine
- Capacity
- 300 ton
Request a Quote Today
We welcome technical inquiries from shipyard engineers and global project owners.