Industrial Fasteners
From plant piping to nuclear power plant equipment. Wherever a joint must never come loose, there is an S&W bolt.
Industrial Fasteners
Bolts made onone path since 1967.
Bolts and nuts are where S&W began. Approved as a nuclear parts supplier in 1984 and as a hydro and thermal power parts supplier with KEPIC certification in 2000, we have had our quality proven in the most demanding markets.
With special materials and surface treatments for high-temperature, high-pressure and corrosive environments, and a differentiated process and inspection system, we supply fasteners to petrochemical plants, offshore projects and power facilities.
Markets
Industries served
- 01
Petrochemical · Construction Plants
Together with Korea's major construction and engineering companies we have supplied flange bolting for plant projects at home and abroad, including the Middle East. We also hold many overseas project references through Japanese heavy industry and engineering companies.
- Stud bolts
- Hex bolts · nuts
- Flange bolting
- 02
Offshore Projects
We supply specially coated bolts, qualified through quality certification, for very large offshore projects such as FPSOs built by Korean shipyards. Coatings that withstand seawater and salt, and a strict inspection system, are the key.
- Specially coated bolts
- Fasteners for offshore structures and platforms
- 03
Heavy Industry · Power · Nuclear
Based on KEPIC certification we have supplied ASME Section III bolting to the Kori, Wolsong and Yeonggwang nuclear power plants. We also make high-temperature, high-pressure turbine parts for hydro and thermal power and bolts and screws for heavy industry in general.
- ASME Sec. III bolting for nuclear
- High-temperature, high-pressure turbine bolts
- Large anchor bolts and high-strength bolts for bridges and structures
Product Line-up
Product Range
Stud · Hex Bolts 
Specially Coated Bolts 
Socket Bolts 
Nuts 
Special-shape Bolts 
High-strength Bolts
Material & Range
Materials · Production Range
Diameter (1/2 – 8 inch)
Maximum length (400 inch)
Monthly capacity
- Carbon steel
- S10C, S20C, S35C, S45C, A36, A307-B
- Alloy steel
- A193-B7 / B7M / B16, A320-L7 / L7M, A194-2H / 2HM / 4 / 7 / 7M, SNCM439, SCM440, A325, A490
- Stainless steel
- 22Cr · 25Cr Duplex, 304 / 304L / 316 / 316L / 321 / 347, A453-660, 6Mo, XM-19
- Nickel alloys
- Incoloy 800H / 800HT / 925, Inconel 625 / 718 / C-276, Monel 400 / K-500
- Standards
- ASME, ASTM, JIS / KS, DIN / EN / ISO
- Plating
- Zn, Ni, Cr, Ag, Cu and others
- Coating
- Hot-dip galvanizing, electro-galvanizing, fluoropolymer (Teflon · Xylan), Sermagard, Dacromet, molybdenum, aluminum and others
Project Experience
Major Supply References
Nuclear Power
- Kori · Shin-Kori
- Wolsong Units 1 – 4
- Hanul (Uljin) Units 1 – 6
- Hanbit (Yeonggwang) Units 1 – 4
Thermal · Combined-cycle Power
- Taean Units 1 – 4
- Hadong Units 1 – 6
- Samcheonpo Units 1 – 6
- Dangjin Units 1 – 2, Boryeong
- Bundang · Seo-Incheon combined cycle
Overseas Plant · Offshore Projects
- Kizomba · Dalia FPSO · BP Angola Block (Angola)
- Sakhalin (Russia), Sable Offshore Energy (Canada)
- South Pars (Iran), Laffan Refinery · NGL-4 (Qatar)
- Shoaiba · SADAF · Ibn Zahr (Saudi Arabia)
- Upper Zakum 750K (UAE), KOC · KPPC (Kuwait)
- Petronas Floating LNG (Malaysia), Map Ta Phut (Thailand)
- ONGC (India), PEMEX Salamanca (Mexico), Sohar (Oman)
Standards
Standards · Certifications
- Quality systems
- ISO 9001 · ISO 14001 · ISO 45001
- Nuclear
- KEPIC MN · SN (bolting, anchor bars · threaded bars)
- EU product certification
- PED 2014/68/EU, CPR EN 14399-1 (high-strength structural bolting assemblies for preloading), DASt-Richtlinie 021 (hot-dip galvanized M39 – M72)
- Offshore
- NORSOK M-650 (super duplex S32760 forged nuts)
- Class · manufacturing process
- KR quality assurance system · heat-treatment process approval, DNV · ClassNK heat-treatment approval
- Testing
- Chemical analysis, tensile · hardness · impact testing, non-destructive testing, CMM measurement
Product Inquiries
For specification reviews and quotations, please contact the department in charge.