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ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler

ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler

Brand Name: Yuhong
MOQ: 1PC
Price: Negotiable
Packaging Details: IRON FRAME CASE WITH PLASTIC CAP
Payment Terms: TT, LC
Detail Information
Place of Origin:
China
Certification:
ABS, BV, DNV, CCS, LR
Fin Wall Thickness:
0.8-3mm
Base Tube Material:
P1, P5, P11, P12, P22, P91
Fin Pitch:
FPI: 3-25
Fin Material:
AISI 304,316,409,410,321,347
Fin Height:
5-30mm
Product Name:
Max 43M/PC
Supply Ability:
10000 tons/month
Highlight:

Waste Heat Recovery Solid Fin Tube

,

Steam Boiler Solid Fin Tube

,

ASME SA335 Solid Fin Tube

Product Description

ASTM A335 P9 Base Tube

Grade UNS Designation C Mn P S Si Cr Mo Other
P9
K90941
0.15 0.30–0.60 0.025 0.025 0.25-1.0 8.0-10.0 0.9-1.1 . . .


A335 P9 Solid Fin Tube FAQ

1. What is SA335 P9 Solid Fin Tube?

  • SA335 P9 is a seamless ferritic alloy-steel pipe (9% Cr, 1% Mo) with integrally welded or extruded fins to enhance heat transfer. It’s used in high-temperature/pressure environments like boilers, heaters, and heat exchangers.

2. What are the key properties of SA335 P9?

  • High-temperature strength (up to ~600°C / 1112°F)
  • Excellent creep & oxidation resistance
  • Good weldability (pre/post-weld heat treatment required)
  • Resistance to sulfidation & thermal fatigue

3. Where are SA335 P9 fin tubes commonly used?

  • Power plants (superheaters, reheaters)
  • Refineries (fired heaters, reformers)
  • Petrochemical (ethylene crackers, heat recovery units)
  • Waste heat boilers (recovering exhaust gas energy)

4. Why choose solid fins over helical/embedded fins?

  • Higher durability (no risk of fin separation)
  • Better heat transfer (continuous metal bond)
  • Suitable for extreme thermal cycling

5. What are the ASTM/ASME standards for SA335 P9 fin tubes?

  • Base Tube: ASTM SA335 P9 (seamless pipe)
  • Fin Tube: Typically complies with ASME B36.10M (dimensions), ASTM A213 T9 (tube equivalent)
  • Testing: Hydrostatic, ultrasonic (UT), eddy current (ET) per ASTM A450

6. How are SA335 P9 fin tubes manufactured?

  • Base tube: Hot extruded/seamless cold-drawn
  • Solid fins: Machined/welded integrally
  • Extruded fins: Cold-formed from base metal
  • Heat treatment: Normalized & tempered for stress relief

7. What are the temperature & pressure limits?

  • Max temp: ~600°C (long-term), up to 650°C (short-term)
  • Pressure rating: Varies by wall thickness (e.g., 1000+ psi for typical power plant applications)

8. How does SA335 P9 compare to P11, P22, or P91?

Grade Cr Content Mo Content Max Temp Key Advantage
P9 9% 1% 600°C Balanced cost/performance
P11 1.25% 0.50% 550°C Better weldability
P22 2.25% 1% 575°C Common in refineries
P91 9% 1% + V,Nb 650°C Superior creep strength

 

ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler 0

Good price  online

Products Details

Home > Products >
Solid Fin Tube
>
ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler

ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler

Brand Name: Yuhong
MOQ: 1PC
Price: Negotiable
Packaging Details: IRON FRAME CASE WITH PLASTIC CAP
Payment Terms: TT, LC
Detail Information
Place of Origin:
China
Brand Name:
Yuhong
Certification:
ABS, BV, DNV, CCS, LR
Fin Wall Thickness:
0.8-3mm
Base Tube Material:
P1, P5, P11, P12, P22, P91
Fin Pitch:
FPI: 3-25
Fin Material:
AISI 304,316,409,410,321,347
Fin Height:
5-30mm
Product Name:
Max 43M/PC
Minimum Order Quantity:
1PC
Price:
Negotiable
Packaging Details:
IRON FRAME CASE WITH PLASTIC CAP
Delivery Time:
According to the quantity
Payment Terms:
TT, LC
Supply Ability:
10000 tons/month
Highlight:

Waste Heat Recovery Solid Fin Tube

,

Steam Boiler Solid Fin Tube

,

ASME SA335 Solid Fin Tube

Product Description

ASTM A335 P9 Base Tube

Grade UNS Designation C Mn P S Si Cr Mo Other
P9
K90941
0.15 0.30–0.60 0.025 0.025 0.25-1.0 8.0-10.0 0.9-1.1 . . .


A335 P9 Solid Fin Tube FAQ

1. What is SA335 P9 Solid Fin Tube?

  • SA335 P9 is a seamless ferritic alloy-steel pipe (9% Cr, 1% Mo) with integrally welded or extruded fins to enhance heat transfer. It’s used in high-temperature/pressure environments like boilers, heaters, and heat exchangers.

2. What are the key properties of SA335 P9?

  • High-temperature strength (up to ~600°C / 1112°F)
  • Excellent creep & oxidation resistance
  • Good weldability (pre/post-weld heat treatment required)
  • Resistance to sulfidation & thermal fatigue

3. Where are SA335 P9 fin tubes commonly used?

  • Power plants (superheaters, reheaters)
  • Refineries (fired heaters, reformers)
  • Petrochemical (ethylene crackers, heat recovery units)
  • Waste heat boilers (recovering exhaust gas energy)

4. Why choose solid fins over helical/embedded fins?

  • Higher durability (no risk of fin separation)
  • Better heat transfer (continuous metal bond)
  • Suitable for extreme thermal cycling

5. What are the ASTM/ASME standards for SA335 P9 fin tubes?

  • Base Tube: ASTM SA335 P9 (seamless pipe)
  • Fin Tube: Typically complies with ASME B36.10M (dimensions), ASTM A213 T9 (tube equivalent)
  • Testing: Hydrostatic, ultrasonic (UT), eddy current (ET) per ASTM A450

6. How are SA335 P9 fin tubes manufactured?

  • Base tube: Hot extruded/seamless cold-drawn
  • Solid fins: Machined/welded integrally
  • Extruded fins: Cold-formed from base metal
  • Heat treatment: Normalized & tempered for stress relief

7. What are the temperature & pressure limits?

  • Max temp: ~600°C (long-term), up to 650°C (short-term)
  • Pressure rating: Varies by wall thickness (e.g., 1000+ psi for typical power plant applications)

8. How does SA335 P9 compare to P11, P22, or P91?

Grade Cr Content Mo Content Max Temp Key Advantage
P9 9% 1% 600°C Balanced cost/performance
P11 1.25% 0.50% 550°C Better weldability
P22 2.25% 1% 575°C Common in refineries
P91 9% 1% + V,Nb 650°C Superior creep strength

 

ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler 0