Stainless steel heat exchanger tubes
Dec 30, 2024
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GNEE is a leading manufacturer of stainless steel tubes for heat exchangers. The process of stainless steel tubes for heat exchangers includes solution treatment, rapid cooling, annealing, pickling and polishing to ensure its surface quality and corrosion resistance.
Specifications for ASTM 213/249/269 Stainless Steel Heat Exchanger Tubes
| Material | 304 / 316L Stainless steel heat exchanger tubes |
| use | Suitable for medium and low pressure heat exchangers, boilers, radiators, heaters, coolers, condensers, evaporators and reboilers; used in chemical, petroleum, power, biology, pharmaceutical, food and other industries. |
| Process characteristics | Internal weld leveling, solution treatment, surface treatment (pickling, bright 180#-600#) |
| Detection Methods | Horizontal and longitudinal flattening, reverse flattening, water pressure test or eddy current flaw detection, mechanical property testing, inner surface roughness testing |
GNEE provides Stainless steel superheater tubes specifications
| Outer diameter | Outside diameter tolerance (mm) | Thickness tolerance(mm) | Length(mm) | ||
| ASTM A269 | ＜38.1 ±0.13 |
OD＜12.7 ±15.0% OD≥12.7 ±10.0% |
OD＜38.1 +3.20-0.00 OD≥38.1 +4.00-0.00 |
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| ≥38.1-88.9 ±0.25 | |||||
| ≥88.9-139.7 ±0.38 | |||||
| ≥139.7-203.2 ±0.76 | |||||
| ≥203.2-304.8 ±1.01 | |||||
| ≥304.8-365.6 ±1.26 | |||||
| ASTM A249 | ＜25.4 ±0.10 |
±10.0% |
OD＜50.8 +3.00-0.00 OD≥50.0 +5.00-0.00 |
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| ＞25.4-38.1 ±0.15 | |||||
| ≥38.1-50.8 ±0.20 | |||||
| ≥50.8-63.5 ±0.25 | |||||
| ≥63.5-76.2 ±0.30 | |||||
| ≥76.2-101.6 ±0.38 | |||||
| ≥101.6-190.5 ±0.38-0.64 | |||||
| ≥190.5-228.6 ±0.38-1.14 | |||||
| GB/T 24593 | ≤25.0 ±0.10 |
±10.0% |
+5.00 -0.00 |
||
| ＞25.4-40.0 ±0.15 | |||||
| ＞40.0-60.0 ±0.20 | |||||
| ＞50.0-65.0 ±0.25 | |||||
| ＞65.0-75.0 ±0.30 | |||||
| ＞75.0-100.0 ±0.38 | |||||
| ＞100.0-200.0 ±0.38-0.64 | |||||
| ＞200.0-225.0 ±0.38-1.14 | |||||
| ＞225.0-305.0 ±0.75%D | |||||
| JIS G3463 | ＜60.0 ±0.25 |
OD＜40.0 T＜2mm +0.40-0.00 T＜2mm +0.20%-0.00 OD＜40.0 +0.20%-0.00 |
OD≤50.0 +0.40-0.00 QD＞50.0 +10.00-0.00 |
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| ≥60.0-＜80.0 ±0.30 | |||||
| ≥80.0-＜100.0 ±0.40 | |||||
| ≥100.0-＜120.0 ±0.40-0.60 | |||||
| ≥120.0-＜160.0 ±0.40-0.80 | |||||
| ≥160.0-＜200.0 ±0.40-1.20 | |||||
| ≥200.0 ±0.40-1.60 | |||||
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