ASME SA-266 Gr.2 N Tubesheet and Flange for Industrial Shell and Tube heat exchanger

This set of core pressure-retaining components is engineered and manufactured strictly in accordance with ASME Section VIII Division 1 codes and TEMA standards, providing exceptional sealing integrity and structural support for heavy-duty industrial shell and tube heat exchanger applications. Serving as vital replacement parts for high-severity environments in petrochemical refining, gas processing, and power generation condenser systems, these components align seamlessly with precision team heat exchanger manufacturing workflows. They are designed to withstand high-temperature thermal cycling and high-pressure differentials, eliminating the risk of inter-pass fluid cross-contamination or external leakage.

Structured Technical Parameters-ASME SA-266 Gr.2 N Tubesheet and Flange for Industrial Shell and Tube heat exchanger

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Shell and tube heat exchanger parts, team heat exchanger tubesheet

Standard & Grade: ASME SA-266 Grade 2 N (Forgings), ASME SA-36 (Plates)

Main Dimensions: Nominal I.D. 584.2 mm (Fits standard 24" shell size), O.D. 770 mm

Drilling Layout: 396 Holes on 25.4 mm Triangular Pitch

Bolting Standard: B.C.D. 705 mm matching 1-1/8"-8UN Stud Bolts (Standard ASME flange layout)

Core Components: Front/Rear Tubesheet, Tube Side Flange, Custom Baffle Plates

Material Specification-ASME SA-266 Gr.2 N Tubesheet and Flange for Industrial Shell and Tube heat exchanger

Quality Assurance & Testing--ASME SA-266 Gr.2 N Tubesheet and Flange for Industrial Shell and Tube heat exchanger

• Full Traceability & Heat Treatment Verification: All ASME SA-266 Gr.2 N forgings are accompanied by EN10204 3.1/3.2 Mill Test Certificates (MTC) detailing complete ladle analysis and mechanical property tests. Forgings undergo a 100% normalization heat treatment to achieve a uniform, fine-grained ferrite-pearlite microstructure for maximum impact toughness and creep resistance.

• Non-Destructive Testing (NDT Standards): In accordance with ASME Section V requirements, all raw forgings undergo 100% Ultrasonic Testing (UT) to verify the absence of internal voids, laminations, or inclusions. High-stress regions, sealing surfaces, and thread roots undergo 100% Magnetic Particle Testing (MT) or Liquid Penetrant Testing (PT) to guarantee zero surface cracks.

• Dimensional Metrology Verification: Coordinate Measuring Machines (CMM) inspect the pitch-to-pitch distances of the 396 tube holes and the alignment of the 705mm B.C.D. bolt circle, securing a stress-free fit-up with shell flanges and tube bundles during final shop fabrication.