ASTM A249 / ASME SA249 TP316L BA Stainless Steel Welded Tube Heat Exchanger Tube
ASTM A249 is a standard specification for welded austenitic steel boiler, superheater, heat-exchanger, and condenser tubes. A249 stainless steel tubes are typically produced using either the electric-resistance-welding (ERW) or the automatic-welding (AW) process. The bright annealing process is used to produce a bright, reflective finish on the surface of the tube. Bright annealed stainless steel welded pipe is widely used in making military products, semiconductor, biological medicine, precision instruments and meters, hydraulic parts and many other industrial products.
ASTM/ASME SA249 TP316L Stainless Steel Welded Tube Equivalent Grade
| JIS | WNR. / DIN | UNS | AISI | EN | GB |
| SUS316L | 1.4404 | S31603 | 316L | 02Cr17Ni12Mo2 | 022Cr17Ni12Mo2 |
ASTM/ASME SA249 TP316L Stainless Steel Welded Tube Mechanical Properties
| | Tensile Stress (Mpa) | Yield Stress (Mpa) | Elongation (%) | Elongation (%) |
| SA 249 316L | 485 | 170 | 35 | 25 |
| 1.4404 | 490-690 | 190 | 40 | 30 |
ASTM/ASME SA249 TP316L Stainless Steel Welded Tube Chemical Composition
| SA 249 | C | Mn | P | S | Si | Ni | Cr | Mo | N |
| 316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.0 | 10-14 | 16-18 | 2-3 | |
| 1.4404 | 0.03 | 2.00 | 0.040 | 0.015 | 1.0 | 10-13 | 16.5-18.5 | 2-2.5 | 0.11 |
Other Stainless Steel Welded Tube Material Grades
| American Standard | TP304 , TP304L , TP310S , TP316 , TP316L , TP316Ti , TP321 , TP347 , 904L , S31803 Etc |
| European Standard | 1.4301 , 1.4306 , 1.4845 , 1.4401 , 1.4404 , 1.4571 , 1.4541 , 1.4550 , 1.4539 , 1.4462 Etc |
| German Standard | X5CrNi18-10 , X2CrNi19-11 , X12CrNi25-21 , X5CrNi17-12-2 , X5CrNi17-12-3 , X2CrNiMo18-14-3 , X6CrNiTi18-10 , X6CrNiTb18-10 Etc |
Purpose and advantages of bright annealing:
1) Eliminate work hardening and obtain satisfactory metallographic structure.
2) Obtain a bright, non-oxidizing and corrosion-resistant surface.
3) Bright treatment keeps the rolling surface smooth, and a bright surface can be obtained without post-treatment.
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Hydraulic Pressure Test
Uses and Applications
1. Common industrial services (Petroleum, chemical, paper, fertilizer, fabric, aviation and nuclear)
2. Fluid, gas and oil industry
3. Heat transmission and pressure service
4. Construction and ornamental
5. Boilers and Heat exchangers
6. Decoration purpose, boiler, auto parts, medical device, food industry, building materials)
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ASTM A249 / ASME SA249 TP316L Bright Annealed Tube Stainless Steel Welded Tube Images
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