ASME SA335 P9 Chromium-Molybdenum Alloy Studded Finned Tubes for High-Temperature Furnace Applications

High-Frequency Welded ASME SA335 P9 Studded Finned Tubes | Durable Chromium-Molybdenum Alloy for Extreme Heat Furnace Systems

Product Overview

Yuhong Holding Group Co., Ltd. introduces ​ASME SA335 P9 Studded Finned Tubes, engineered for high-temperature industrial applications. Utilizing high-frequency welding (HFW) technology, these tubes combine chromium-molybdenum alloy durability with optimized heat transfer efficiency.

Key Features

​1. Material & Chemical Composition

• ​Base Material: ASME SA335 P9 Chromium-Molybdenum Alloy Steel.
• ​Fin Material: High-grade stainless steel (AISI 304/316L) for corrosion resistance.
• ​Chemical Composition:

Compliant with ASME and ASTM standards.

2. Mechanical Properties

​3. Manufacturing Process

• ​High-Frequency Welding (HFW): Ensures 95% weld integrity between studs and base tube.
• ​Studded Fin Design: Spiral studs (diameter: 8-12mm) increase surface area by 3-5x.
• ​Post-Weld Treatment: Shot blasting and anti-corrosion coating (zinc or epoxy).

​4. Applications

• ​High-Temperature Furnaces: Cement kilns, steel reheating furnaces.
• ​Heat Recovery Systems: Boilers, economizers.
• ​Oil & Gas: Crackers, reformers.

​Advantages

1. ​Enhanced Heat Transfer: 30-50% higher efficiency compared to smooth tubes.
2. ​Corrosion Resistance: Suitable for acidic or sulfur-rich environments.
3. ​Customization: Available in lengths up to 18m and stud configurations (helical/axial).

​FAQ

Q1: What is the lead time for bulk orders?
A: Standard lead time is 4-6 weeks for 20-ft container loads.

Q2: Can these tubes withstand thermal cycling?
A: Yes, the ASME SA335 P9 alloy ensures stability under repeated heating/cooling.

Q3: Are certifications available?
A: We provide ASME, ISO 9001, and EN 10204-3.1 certifications.

​About Yuhong Holding Group Co., Ltd.

With ​20 years of expertise, Yuhong is a top-5 exporter of finned tubes in China, serving 80+ countries. Our facilities include:

• ​55 production lines and ​20,000㎡ factory area.
• ​110+ skilled technicians dedicated to quality control.

• ​Advanced Equipment: CNC high-frequency welders, 3D laser cutting machines.

Contact "jimmy@steelseamlesspipe.com" to explore our full product range.