What are stainless steel condenser tubes?
Feb 07, 2025
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The stainless steel condenser tubes supplied by GNEE feature pure hydrogen shielded welding, with straight and full welds; online annealing and solid solution treatment, with high strength of the welded tubes; fine mechanical internal polishing, with smooth inner walls without marks; and a 1000-hour salt spray test with no corrosion on the surface.
| 304 / 304L / 316L | |
| Applications | Applicable to medium and low pressure radiators, coolers, condensers; used in chemical, petroleum, power, biological, pharmaceutical, food and other industries. |
| Process characteristics | Inner weld bead leveling, solid 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 test, inner surface roughness test |
| 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 |
||
| ＞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 | |||||
