|
| الاسم التجاري: | YUHONG |
| رقم الطراز: | ASTM A269 TP316L أنبوب ملحوم من الفولاذ المقاوم للصدأ |
| الـ MOQ: | 500 كلغ |
| تفاصيل التعبئة: | علبة خشبية رقائقية / علبة حديدية / حزمة بغطاء بلاستيكي |
| شروط الدفع: | الاعتماد المستندي، تي/تي |
Pressure / Mechanical Integrity
Seamless has no weld seam → inherently stronger for high pressure (e.g., > 3000 psi) and cyclic fatigue applications. Preferred for ASME Section VIII, high‑pressure steam, hydraulic lines.
Welded (with BA) – after bright annealing, the weld recrystallizes and has properties nearly equal to the base metal. Suitable for low to medium pressure (typically < 1500 psi) and non‑cyclic service.
Chemical Composition % of ASTM A269 TP316L Stainless Steel Welded Heat Exchanger Tube
| Grade | UNS Designation | C | M | P | S | Si | Ch | Ni | Mo |
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
Mechanical properties of ASTM A269 TP316L Stainless Steel Welded Heat Exchanger Tube
|
Grade
|
Tensile Str
(MPa) min |
Yield Str
0.2% Proof (MPa) min |
Elong
(% in 50mm) min |
Hardness
|
|
|
Rockwell B (HR B) max
|
Brinell (HB) max
|
||||
|
316L |
485
|
170
|
40
|
95
|
217
|
Physical Properties of ASTM A269 TP316L Stainless Steel Welded Heat Exchanger Tube
|
Grade
|
Density
(kg/m3) |
Elastic Modulus
(GPa) |
Mean Co-eff of Thermal Expansion (m/m/0C)
|
Thermal Conductivity
(W/m.K) |
Specific Heat 0-1000C
(J/kg.K) |
Elec Resistivity
(nΩ.m) |
|||
|
0-1000C
|
0-3150C
|
0-5380C
|
At 1000C
|
At 5000C
|
|||||
|
316/L
|
8000 |
193
|
15.9
|
16.2
|
17.5
|
16.3
|
21.5
|
500 |
740 |
Why Bright Annealed for Heat Exchangers?
For heat exchanger service, surface quality directly impacts performance. The BA finish offers distinct advantages:
No Scale or Oxide: Eliminates "chalking" or flaking that could contaminate process fluids or block small tubes.
Smoother Surface (Ra ≤ 20 µin typical): Reduces fouling (deposit buildup) and improves heat transfer efficiency compared to pickled or as-welded surfaces.
Cleanliness: Ready for high-purity applications (pharma, food, ultra-pure water) without chemical cleaning.
Uniform Corrosion Resistance: The weld is fully solution annealed, eliminating galvanic effects between weld and base metal.
Application
Shell & Tube Heat Exchangers (condensers, evaporators, chillers)
U-tube bundles (BA finish allows bending without cracking)
Hydraulic & Instrumentation lines in corrosive environments
Pharmaceutical / Biotech (clean steam, WFI systems)
Chemical processing (acetic acid, chlorides, sulfites)
english
français
Deutsch
Italiano
Русский
Español
português
Nederlandse
ελληνικά
日本語
한국
العربية
हिन्दी
Türkçe
indonesia
tiếng Việt
ไทย
বাংলা
فارسی
polski
التصنيف العام
لقطة تقييم
فيما يلي توزيع جميع التصنيفاتجميع المراجعات