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| 起源の場所: | 中国 |
| ブランド名: | YUHONG |
| 証明: | ASME II, ASME III, ABS, LR, DNV, GL , BV, CCS, KR, NK, TUV, PED, GOST, ISO , TS |
| モデル番号: | ASME SA182 F304H ステンレス鋼鍛造リング |
| 最小注文数量: | 1個 |
|---|---|
| パッケージの詳細: | 層木の箱/パレット |
| 受渡し時間: | 7日間 |
| 支払条件: | LC、T/T |
| 製品名: | 造られたリング | 標準: | ASTM A182、ASME SA182 |
|---|---|---|---|
| 材料: | 304H、1.4948 | サイズ: | 習慣はバイヤーの引く条件として、できる |
| 形: | 指輪 | NDT: | 100％PT、UT、PMI |
| 応用: | 熱交換器、ボイラー、圧力容器、蒸気タービン、大きい中央空気調節、等を。 | ||
| ハイライト: | ASME SA182 F304H stainless steel ring,1.4948 steel forged ring,heat exchanger spare parts steel ring |
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ASME SA182 F304H Stainless Steel Forged Ring for Heat Exchanger Application
Function of Forged Rings in Heat Exchangers
These are the heavy structural components, not the tubes themselves:
Tubesheets: The thick drilled ring/plate that holds the tube bundle (e.g., TP321 tubes). F304H provides the strength to withstand high differential pressure between shell-side and tube-side fluids.
Flange Rings: Welded or integral rings at the channel ends for bolting to piping or bonnets.
Channel Barrels / Closures: Cylindrical forged sections for high-pressure inlet/outlet headers.
Bearing / Support Rings: Internal rings supporting tube bundles or flow distributors.
Chemical composition % of ASME SA182 F304H Stainless Steel Forged Ring Heat Exchanger Spare Parts
| Geade | C | Mn | Si | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
| 304H | min: 18.0 max:20.0 | min: 8.0 max: 10.5 | min: 0.04 max:0.10 | 0.75 max | 2.0 max | 0.04 max | 0.03 max | 0.10 max |
Mechanical properties of grade ASTM A182 F304H Flange are displayed in the following table.
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
Physical properties of ASME SA182 F304H Stainless Steel Forged Ring Heat Exchanger Spare Parts
| Grade | Density(kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Specific Requirements for Heat Exchanger Spare Parts (Forged Rings)
When used for tubesheets, flanges, or channel barrels, forged rings must meet these critical requirements:
Grain Size: ASME SA182 requires a fine grain size (ASTM No. 7 or finer) for F304H to meet creep design curves. Coarser grains reduce rupture life.
Ultrasonic Examination (UT): For hollow forgings (rings) over specific thicknesses, UT is required to detect internal laminations or porosity.
Liquid Penetrant Examination (PT): Required for surface defect detection on finished machined surfaces (sealing faces of flanges).
Solution Annealing: Must be heated to 1040°C – 1120°C and rapidly quenched (water or rapid air) to put carbides into solution before service.
Application
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