Precision Engineered
Custom Flanges
Delivering strength, precision, and reliability for industrial projects. Custom flanges up to 64 inches in diameter.
Delivering Precision
Since Day One
PT. Jayatama Mandiri Steel is a leading custom flange manufacturer with production capabilities of up to 64 inches in diameter. We provide precision-engineered flange solutions for industrial piping, construction, oil and gas, shipbuilding, and general manufacturing applications.
Advanced Manufacturing
Backed by Heavy-Duty Lathe, Radial Drilling, and Profile Cutting machines for precision up to 64 inches.
Experienced Team
Skilled professionals committed to dimensional accuracy and material integrity.
International Standards
Products comply with JIS, DIN, and ANSI/ASME international flange standards.
Engineered for Excellence
Every flange we produce reflects our commitment to precision, quality, and customer satisfaction.
Up to 64-Inch Custom Flange
Capable of manufacturing large-diameter custom flanges for heavy-duty industrial applications up to 64 inches.
Precision Machining
Precision machining ensures exact dimensions, smooth surface finish, and consistent quality on every flange.
Experienced Team
Dedicated professionals with deep expertise in flange manufacturing, material science, and industrial standards.
High Quality Materials
We use premium carbon steel, stainless steel, and alloy steel sourced from certified suppliers for maximum durability.
Customer-Oriented
Flexible order sizes, from single unit to mass production. We adapt to your project requirements and timeline.
Fast Production
Streamlined manufacturing process ensures competitive lead times without compromising on quality standards.
Flange Categories
We manufacture a comprehensive range of standard and custom flanges to international specifications.
JIS Standard Flanges
Japanese Industrial Standard flanges for Asian market applications.
- JIS 5K
- JIS 10K
- JIS 16K RF
- JIS 20K / 30K SO / 40K SO
DIN Standard Flanges
Deutsches Institut fur Normung flanges for European industrial standards.
- DIN PN 10
- DIN PN 16
- DIN PN 25 RF
- DIN PN 40 RF
ANSI / ASME Flanges
American National Standard flanges for global industrial applications.
- #150 SORF
- #300 SORF
- #600 WNRF
- Custom pressure class
Custom Specifications
Tailor-made flanges engineered to your exact requirements and specifications.
- Non-standard dimensions
- Special material grades
- Unique facing types
- Drawings-based production
2 inch to 64 inch Custom Flanges
Precision Equipment
Our production line is equipped with advanced machinery to deliver precise, reliable results on every order.
Heavy-Duty Lathe Machine
Built for machining large-diameter custom flanges from 32 inches (DN800) to 64 inches (DN1600). Robust construction and high-torque operation deliver consistent dimensional accuracy across heavy-load production runs.
Radial Drilling Machine
Designed for precision drilling of custom flanges from 32 inches (DN800) to 64 inches (DN1600). High-torque radial arm ensures accurate bolt hole patterns and consistent drilling depth.
Profile Cutting Machine
Engineered for the precise extraction of raw flange blanks from thick steel plates. The automated thermal cutting process ensures highly accurate outer and inner diameters prior to the final machining phase.
Production Process
Consultation & Design
Client provides specifications, drawings, and custom requirements.
Material Selection
Sourcing certified materials per required standards.
Cutting & Machining
Precision cutting, turning, and drilling.
Quality Check
Dimensional inspection and material verification.
Finishing
Beveling, drilling, painting, coating, and packaging.
Delivery
Safe packaging and on-time delivery.
Trusted Across Sectors
Our flanges are relied upon by leading companies across diverse industrial sectors.
Oil & Gas
High-pressure flanges for upstream exploration, midstream pipelines, and downstream refining.
Petrochemical
Chemical-resistant flanges for processing plants, reactors, and storage facilities.
EPC Contractors
Reliable flange supply for large-scale Engineering, Procurement, and Construction projects.
Shipbuilding
Marine-grade flanges for vessel construction and offshore platforms.
Construction
Structural flanges for commercial buildings and industrial infrastructure.
General Manufacturing
Versatile flange solutions for industrial equipment and production systems.
Ready to Start
Your Project?
Get in touch with our engineering team to discuss your flange requirements. We deliver custom solutions with precision, quality, and competitive pricing.
Contact Us
We are committed to providing excellent service and fast responses. Reach out to our team.
Address
Jl. Siliwangi KM 2 RT 01 RW 06 No 225
Kel. Sepanjang Jaya, Kec. Rawalumbu
Kota Bekasi, Indonesia