Haihao Group Supplies RTJ Blind Flanges to Indonesia for High-Pressure Pipeline Systems
Haihao Group recently completed the production and shipment of a large batch of RTJ blind flanges for a customer in Indonesia. These flanges are designed for high-pressure industrial pipeline systems and were manufactured in strict accordance with ASME B16.5, ASME B16.47 Series A, and NORSOK L-005 standards.
The order includes multiple sizes and pressure classes, ranging from ¾ inch to 28 inches and Class 900 to Class 2500 pressure ratings. The materials used include ASTM A694 F52, ASTM A350 LF2 CL1, and ASTM A182 F316/316L stainless steel, ensuring excellent strength, corrosion resistance, and reliability in demanding service environments.
All products were supplied with protective oil coating to prevent corrosion during storage and transportation.
RTJ blind flange ASTM A694 F52 for high pressure pipelines
Product Overview: High-Pressure RTJ Blind Flanges
The RTJ blind flanges supplied in this project are designed for pipeline termination and isolation in high-pressure systems. The ring-type joint (RTJ) sealing surface provides a metal-to-metal seal that ensures excellent leak-tight performance under extreme pressure conditions.
Key Product Types Included
ASTM A694 F52 RTJ Blind Flanges
- Sizes: 0.75″, 1.5″, 12″, 20″, 26″, 28″
- Pressure Classes: 1500#, 2500#, 900#
- Standards: ASME B16.5 / ASME B16.47 Series A
- Application: High-pressure oil and gas pipeline systems
ASTM A350 LF2 CL1 RTJ Blind Flanges
- Sizes: 10″, 14″
- Pressure Class: 900#
- Standard: ASME B16.5
- Application: Low-temperature pipeline systems
ASTM A182 F316/316L Stainless Steel RTJ Blind Flanges
- Sizes: 10″, 14″
- Pressure Classes: 900# and 2500#
- Standard: ASME B16.5
- Application: Corrosive environments and offshore systems
In addition, the shipment includes a compact blind flange (CJ type) manufactured according to NORSOK L-005 NCF5, designed for high-performance offshore pipeline installations.
Low-Temperature Impact Testing Requirements
To meet project specifications, the RTJ blind flanges manufactured from carbon steel materials underwent strict low-temperature impact testing.
- ASTM A350 LF2 CL1: Impact test at −46°C with 27J / 20J results
- ASTM A694 F52: Impact test at −46°C with 41J / 33J results
These test results confirm the reliability of the RTJ blind flanges in cold service environments such as offshore pipelines and LNG facilities.
Advantages of RTJ Blind Flanges
Using RTJ blind flanges in high-pressure pipelines provides several important benefits.
Reliable Sealing Performance
The ring-type joint sealing design provides superior leak-tight sealing compared with standard flange faces.
High Pressure Resistance
With pressure ratings up to Class 2500, these flanges are suitable for demanding oil and gas applications.
Excellent Mechanical Strength
Materials such as A694 F52 and A350 LF2 offer strong mechanical properties and excellent toughness.
Corrosion Resistance
The A182 F316/316L stainless steel RTJ blind flanges provide excellent resistance to corrosion in aggressive chemical or marine environments.
Applications of High-Pressure RTJ Blind Flanges
The RTJ blind flanges supplied to Indonesia are widely used in industries where pipeline safety and sealing reliability are essential.
Typical applications include:
- Offshore oil and gas pipeline systems
- Petrochemical processing plants
- LNG and cryogenic facilities
- High-pressure industrial piping systems
- Energy infrastructure projects
Because of their strong sealing capability and high pressure rating, RTJ blind flanges are commonly used in critical pipeline connections.
Haihao Group – Professional Manufacturer of Industrial Flanges
Haihao Group is a trusted manufacturer and exporter of steel flanges, pipe fittings, and industrial piping components. Our products comply with international standards such as ASME, ASTM, EN, and NORSOK, ensuring compatibility with global engineering projects.
With advanced production equipment and strict quality control procedures, Haihao Group continues to supply high-quality RTJ blind flanges to customers in the oil, gas, and energy industries worldwide.
If you are looking for a reliable supplier of high-pressure RTJ blind flanges, Haihao Group can provide customized solutions and professional technical support for your pipeline project.