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| Brand Name : | YUHONG |
| Model Number : | ASME SA335 P9, HFW |
| Certification : | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Price : | Negotiate |
| Payment Terms : | T/T,L/C |
| Supply Ability : | 4150 Ton Per Month |
| Delivery Time : | 20-80 days |
Introducing ASME SA335 P9 High-Frequency Welded Helical Finned Tubes, designed for extreme-temperature industrial furnace applications. These tubes combine chromium-molybdenum alloy durability with high-efficiency heat transfer, making them ideal for harsh environments.
| Element | Cr | Mo | C | Mn | Si |
|---|---|---|---|---|---|
| Composition | 8.5-9.5% | 0.90-1.10% | ≤0.15% | 0.30-0.60% | 0.50-1.0% |
Compliant with ASME SA335 and ASTM A213 standards.
| Property | Value |
|---|---|
| Tensile Strength | ≥620 MPa |
| Yield Strength | ≥440 MPa |
| Elongation (A50) | ≥20% |
| Operating Temperature | -20°C to 650°C |
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.
Contact Us:

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| YUHONG HOLDING GROUP CO., LTD |
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