
Shipbuilding
& Offshore Plant
We supply a wide range of bolts for shipbuilding, from alloy steel engine bolts (Ni, Cr, Mo) to standard bolts (B7, Gr.10.9, 8.8, 4.6) used in deck pipe connections. For marine applications, these bolts are engineered for exceptional strength and corrosion resistance, using materials like Inconel, Incoloy, super alloys, or carbon/alloy steel with PTFE coating.
For Shipbuilding & Offshore Plant
Production Scope
- CNC Lathes
- Hot Forging : M10 - M100 (3/8 in. ~4 in.)
- Thread Rolling : M6 - M100 (1/4 in. ~ 4 in.)
- Band and Circular saw
Materials
- Structural Steel : JIS SS400, ASTM A36, A307, A325, A490
- Carbone Steel : S10C - S45C
- Alloy Steel : SCM 440, A193 Gr.B5, B7, B7M, B16, A320 Gr.L7, L7M, L43, A437 Gr. B4B, 20CrMoVTiB-10, etc.
- Heat Resistance Steel : ASTM A453 - 660, A564 - 630, C276, etc.
- Stainless Steel : A193 Gr.B8 CL.1&2, B8M CL.1&2, B8T, B8C, B6, SS317(L), SS321, etc.
- Duplex Stainless Steel : UNS No.: S31803, S32205, S32750, S32760, etc.
- Super Alloy Steel : MONEL K-400/K-500, INCONEL 625/718, TITANIUM Gr. 2, 5 ,7, NIMONIC, etc.
Applicable Standards
- ASME SECTION II PART A, B
- ASTM : A36, A182, A193, A194, A240, A276, A307, A320, A325, A449, A479, A490, A563, A574, F436, F844, B16, B462, B865, F1554, etc.
- ASME : B1.1, B1.13M, B18.2.1, B18.2.2, B18.3, B18.6.3, B18.2.3.5~7M, B18.2.4.1~6M, B18.3.1~6M, etc.
- BS : 3643-1, 3692, 4320, 14399
- JIS : B1051, B1052, B1173, B1175, B1178, B1180, B1181, B1189, etc.
- DIN : 912, 931, 933, 934, 936, 6914, 6915, 6916, 912, 125, 127, etc.
- ISO: 898-1, -2, 4014, 4032, 4762, etc.
- Customer Drawing and Specification
Surface Treatment
- Electric Galvanization: ASTM B633
- Hot-dip zinc coating: ASTM A153
- Mechanical Galvanization: ASTM B695
- PTFE (Teflon) Coating
- Acid Surface Treatments
- Phosphate Coating
- GEOMET Coating
- Delta-Tone & Seal Coating
- Xylan Coating
- Other Required Treatments
High Standards
Engineered to meet the most demanding international standards, our fasteners are manufactured under strict quality controls and third-party certifications — ensuring consistent performance in the world’s toughest environments.
Corrosion Resistance
Built to last, our fasteners offer exceptional resistance to corrosion, thanks to carefully selected materials and advanced surface treatments — making them ideal for offshore, subsea, and high-salinity environments.
Built for Urgent Schedules
From unexpected shutdowns to critical project timelines, our fasteners are delivered with speed and precision — supported by flexible manufacturing setup and reliable supply-chain coordination.
A Purpose-Built Process
for Your Project Success
Trusted Expertise for Every Industry
Our Approach to Maintaining Excellence in Quality
Quality Inspection
Every incoming material is thoroughly inspected, each process is monitored through in-process quality checks, and all products undergo a final inspection with full documentation before shipment.
Training Program
We conduct rigorous training and internal review program covering international standards, safety and technical skills ensuring that our capabilities improve after every project.
Traceable Process
Our traceability system integrates designated operations, color-coded material handling, and detailed lot numbering to ensure complete product separation, immediate issue tracking and continuous quality monitoring.








