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

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

Name: ASME SA335 P9 Solid Fin Tube for Waste Heat Recovery Steam Boiler
Brand: YUHONG GROUP
Price: 1 USD

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

Brand Name : YUHONG GROUP

Place of Origin : CHINA

MOQ : 1PC

Price : N

Payment Terms : L/C, T/T

Supply Ability : 10000 tons/month

Delivery Time : According to the quantity

Packaging Details : IRON FRAME CASE WITH PLASTIC CAP

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

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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

Product Tags:

Waste Heat Recovery Solid Fin Tube

Steam Boiler Solid Fin Tube

ASME SA335 Solid Fin Tube

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

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