ASTM A213 Seamless Stainless Steel Heat Exchanger Tubes with Non-Destructive Testing - DIN/ASME Certified 304/316 Grades
High-quality cold drawn seamless stainless steel heat exchanger tubes manufactured in compliance with DIN, ASME, and ASTM A213 standards. All tubes undergo comprehensive non-destructive testing to ensure superior performance and reliability in demanding industrial applications.
Every tube undergoes rigorous non-destructive testing procedures to guarantee structural integrity and performance reliability.
Comprehensive sampling protocols ensure consistent quality across production batches:
- Flattening, flaring, and grain size testing by heat and size grouping
- Tensile and hardness testing with precise furnace charge tracking
- Continuous furnace processing with temperature and time monitoring
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| 201(1Cr17Mn6Ni5N) | ≤0.15 | ≤1.0 | ≤5.5 | ≤0.06 | ≤0.03 | 3.5-5.5 | 16.0-18.0 | -- | ≤0.25 |
| 202(1Cr18Mn8Ni5N) | ≤0.15 | ≤0.07 | ≤7.5 | ≤0.06 | ≤0.03 | 4.0-6.0 | 17.0-19.0 | -- | ≤0.25 |
| 304(0Cr18Ni9) | ≤0.08 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 8.0-11.0 | 18.0-20.0 | -- | -- |
| 304L(00Cr18Ni10) | ≤0.03 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 8.0-11.0 | 18.0-20.0 | -- | -- |
| 316(0Cr17Ni12Mo2) | ≤0.08 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | -- |
| 316L(0Cr17Ni14Mo2) | ≤0.03 | ≤0.07 | ≤2.0 | ≤0.04 | ≤0.03 | 11.0-14.0 | 16.0-18.0 | 2.0-3.0 | -- |
| 321 | ≤0.08 | ≤1.0 | ≤2.0 | ≤0.04 | ≤0.03 | 9.0-12.0 | 17.0-19.0 | Ti≥5xC | |
| 409 | ≤0.08 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | ≤0.5 | 10.5-11.7 | Ti6xC%≤0.70 | |
| 409L | ≤0.03 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 0.5 | 10.5-11.7 | Ti8xC%≤0.70 | |
| 430 | ≤0.12 | ≤1.0 | ≤1.0 | ≤0.04 | ≤0.03 | 16.0-18.0 |
TP304, TP304L, TP304H, TP304N, TP310S, TP316, TP316L, TP316Ti, TP316H, TP317, TP317L, TP321, TP321H, TP347, TP347H, 904L
S32101, S32205, S31803, S32304, S32750, S32760
TP405, TP409, TP410, TP430, TP439
- Incoming Raw Material Inspection
- Raw Material Segregation to prevent steel grade mix-up
- Heating and Hammering End for Cold Drawing
- Cold Drawing and Cold Rolling with online inspection
- Heat Treatment (+A, +SRA, +LC, +N, Q+T)
- Straightening, Cutting to specified length, and Finished Measuring Inspection
- Mechanical Testing in certified laboratories including Tensile Strength, Yield Strength, Elongation, Hardness, Impact, and Microstructure analysis
- Packing and Stocking with quality assurance documentation
ZHEHENG STEEL maintains comprehensive certifications including ABS, DNV, GL, BV, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2008, and ISO 14001-2004. Our commitment to quality and competitive pricing has established our reputation in domestic and international markets.
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