YUHONG HOLDING GROUP CO., LTD
YUHONG HOLDING GROUP CO., LTD
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ASTM A335 P9 Studded Fin Tube For Fired Heater,Steam Boiler
ASTM A335 GR.P9 Studded Fin Tube are made from high-alloy steel and are designed for high-temperature and high-pressure applications.ASTM A335 G.P9 Studded Fin Tube maintain excellent strength and hardness at elevated temperatures, making them suitable for use in boilers and heat exchangers.
This material exhibits high resistance to corrosion, making it ideal for use in chemical processing and petrochemical environments.This material have good weldability, allowing for easy connections with other materials, suitable for complex structural applications and can withstand significant mechanical loads under high pressure, ensuring system stability and safety.
Chemical positions:
| ASTM A335 P9 | ||||||
| C | Mn | P | S | Si | Cr | Mo |
| ≤0.15% | 0.30~0.60% | ≤0.025% | ≤0.025% | 0.50~1.00% | 8.0~10.0% | 0.90~1.10% |
Mechanical properties of ASTM A335:
| Property | Tensile Strength | Yield Strength | Elongation | Hardness | Modulus of Elasticity | Poisson's Ratio |
| Value | 415 - 550 MPa (60 - 80 ksi) | 240 MPa (35 ksi) minimum | 20% minimum | 85 HRB maximum, 200 HB maximum | ~200 GPa (29 x 10^6 psi) | ~0.3 |
Specifications For Various Types Of Finned Tubes:
| Yuhong Group Fin Tube Specification | |||||
| Type | Description | Base tube | Fin specification (mm) | ||
| O.D. (mm) | Fin pitch | Fin height | Fin thick | ||
| Embedded | G-type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| Extruded | Single metal combined metal | 8-51 | 1.6-10 | <17 | 0.2-0.4 |
| Low fin tube t-type fin tube | 10-38 | 0.6-2 | <1.6 | ~0.3 | |
| Bamboo tube corrugated tube | 16-51 | 8~30 | <2.5 | / | |
| Wound | L/KL/LL type fin tube | 16-63 | 2.1-5 | <17 | ~0.4 |
| String | String fin tube | 25-38 | 2.1-3.5 | <20 | 0.2-0.5 |
| U-type | U-type tube | 16-38 | / | / | / |
| Welding | HF-welding fin tube | 16-219 | 3~25 | 5~30 | 0.8-3 |
| H/HH type fin tube | 25-63 | 8~30 | <200 | 1.5-3.5 | |
| Studded fin tube | 25-219 | 8~30 | 5~30 | φ5-20 | |
Advantages:
Applicatons:
