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Pooja Steel India

Pooja Steel India

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Ring Type Joint Flanges

Ring Type Joint Flanges (RTJ) feature a machined metallic ring with a deep groove cut into its face. This groove accommodates a metal ring that compresses when the flange bolts are tightened, creating a leak-proof seal. Stainless Steel RTJ Flanges are ideal for high-pressure and high-temperature services, while Carbon Steel RTJ Flanges are spill-proof.

Category:

Description

Ring Type Joint (RTJ) Flanges: High-Pressure Sealing for Demanding Applications
SpecificationDescription
DimensionsANSI B16.5, MSS SP44, Custom Drawings
Size Range1/2″ (15 NB) to 48″ (1200NB)
Pressure Classes150 LBS to 2500 LBS
DIN StandardsDIN2527, DIN2642, DIN2635, DIN2638, DIN2673, etc.
BS StandardsBS4504, PN6, PN10, PN16, PN25, PN40, etc.
API StandardsPSI-2000/3000/5000/10000, etc.
JIS Standards2220-2004 5k/10k/16k, etc.
Flange Face TypesCompatible with FF (Flat Face), RF (Raised Face), and RTJ (Ring Type Joint)

**Material & Grades:**

Ring type joint (RTJ) flanges are available in a wide variety of materials to meet the requirements of high-pressure and critical applications. Here are some common options:

  • Stainless Steel: ASTM A 182 F 304, 316, 321, 347, 904L – Excellent corrosion resistance for various environments.
  • Duplex & Super Duplex Steel: ASTM / ASME A/SA 182 F 44, F 51, F 53, F 55, F 60, F 61 – Exceptional strength for high-pressure applications.
  • Carbon Steel: ASTM / ASME A/SA 105, A 350, A 181 LF 2, A516 Gr.70, A694 (**Limited use for RTJ flanges due to pressure limitations**).
  • Low Temp Carbon Steel: ASTM A350 LF2, LF3 – Suitable for low-temperature environments, but not ideal for high-pressure RTJ applications.
  • Alloy Steel: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F22, F91 – Preferred choice for high-pressure RTJ flanges due to their strength and durability.
  • Copper Alloy Steel: ASTM SB 61, SB62, SB151, SB152 – For specific applications requiring copper properties alongside pressure resistance.
  • Nickel Alloy: ASTM SB564, SB160, SB472, SB162, etc. – Exceptional corrosion resistance for harsh environments and high-pressure applications.