In heavy industry and heat treatment, a single damaged radiant tube or furnace manifold can bring an entire production line to a halt. A common pain point for purchasing managers is the "forging and drawing queue"-most manufacturers have lead times of 12-16 weeks for GH3030 (equivalent to Nimonic 75) steel pipe.
We solve these purchasing bottlenecks:
* Long lead times: Waiting for months during factory shutdowns.
* High minimum order quantities: Being forced to purchase 500 kg when only 5 meters are needed for repairs.
* Substitution risk: Being supplied with inferior stainless steel due to "special alloy shortages."
At Gnee Alloy, we eliminate these bottlenecks. We maintain a large wholesale inventory, ready to ship immediately, ensuring your maintenance and overhaul plans proceed as scheduled.
Click to get a GH3030 product quote
Supply Nickel base steel GH3030 pipes be used in high temperature industry
Supply Nickel base steel GH3030 pipes be used in high temperature industry
GH3030 nickel-based steel pipe is ideal for use in high-temperature industries. This solid solution-strengthened alloy (containing approximately 80% nickel and 20% chromium) is designed to withstand extreme high temperatures while maintaining excellent oxidation resistance and structural stability.
What are the components of GH3030?
GH3030 is a solid solution strengthened high-temperature alloy, mainly composed of nickel (Ni) and chromium (Cr), with a simple chemical composition. Its typical ratio is 80% nickel and 20% chromium.
1. Chemical composition of GH3030 tube
| Element | Content (%) | Notes |
|---|---|---|
| Nickel (Ni) | Balance (≥ 75.0) | Matrix element; provides high-temperature stability |
| Chromium (Cr) | 19.0 – 22.0 | Provides oxidation and corrosion resistance |
| Iron (Fe) | ≤ 1.0 | Tube specification requires ≤1.0% (stricter than bar/plate) |
| Titanium (Ti) | 0.15 – 0.35 | Supplementary solid-solution strengthening |
| Aluminum (Al) | ≤ 0.15 | Residual element; strictly limited |
| Carbon (C) | ≤ 0.12 | Ensures good weldability and workability |
| Manganese (Mn) | ≤ 0.70 | Deoxidizer |
| Silicon (Si) | ≤ 0.80 | Deoxidizer |
| Phosphorus (P) | ≤ 0.015 | Tube specification requires ≤0.015%; ensures toughness |
| Sulfur (S) | ≤ 0.010 | Tube specification requires ≤0.010%; ensures hot workability |
| Copper (Cu) | ≤ 0.007 | Tube specification has stricter Cu limit (≤0.007%) |
2. Mechanical properties of GH3030 at room temperature (solution treated)
| Property | Value | Notes |
|---|---|---|
| Tensile Strength, Ultimate (Rm) | ≥ 685 MPa | Longitudinal specimen |
| Tensile Strength, Yield (Rp0.2) | ≥ 295 MPa | 0.2% offset |
| Elongation at Break (A) | ≥ 30% | Gauge length 5d or 50mm |
| Reduction of Area (Z) | ≥ 50% (typical) | - |
| Hardness (HBW) | ≤ 200 | Solution treated condition |
| Modulus of Elasticity (20°C) | ~210 GPa | - |
| Poisson's Ratio | 0.30 – 0.31 | - |
Click to download the GH3030 alloy PDF file now
3. GH3030 Pipe Spot Production Capacity Table
| Feature | Range / Specification | Commercial Advantage |
| Manufacturing Type | Seamless (Cold Drawn) & Welded | Options for every budget. |
| Outside Diameter (OD) | 6.0 mm – 219.0 mm | Comprehensive size coverage. |
| Wall Thickness (WT) | Sch 10, Sch 40, Sch 80, Sch 160 | High-pressure rated inventory. |
| Surface Condition | Pickled, Polished, or Bright Annealed | Ready for immediate assembly. |
| Supply State | Solution Treated / Annealed | Optimized for Industrial Durability. |
4. Gnee Alloy GH3030 Precision Machining Services
High-temperature alloys are expensive. We offer professional custom machining services to reduce your project's total cost:
On-Demand Cutting Service: We use precision automatic band saws to provide ready-to-install blanks, ensuring you don't have to pay for shipping or material costs for unused "scrap".
MTC 3.1 Traceability: Each kilogram of material is marked with a heat number and comes with an EN 10204 3.1 factory test certificate, including chemical composition analysis and room temperature/high temperature mechanical property data.
5. GH3030 tubing is primarily used in the following high-temperature applications
Aerospace and Turbines: Used in turbine engine combustion chambers and critical heat-resistant engine components.
Petrochemicals and Chemicals: Used in the manufacture of high-temperature vessels, reactors, and heat exchangers.
Energy and Power: Used as thermocouple protection sheaths and long-term stabilization components in nuclear reactor systems.
Why should we source Gnee Alloy from our Tier 1 supplier?
Direct Factory Pricing: Skip the 15-25% markup from international trading agents and secure original manufacturer rates.
Zero MOQ for Stock Items: We support both small-scale maintenance (MRO) and large-scale industrial projects.
Fast Global Shipping: Optimized logistics to minimize lead times to Europe, USA, and Southeast Asia within 5-7 business days.
Certified Quality: Fully compliant with GB/T 15062, ASTM, and AMS standards.
Gnee Alloy GH3030 certificate
Contact us now to get the latest export price for GH4169 in 2026
FAQ
Q1: How fast can you ship an in-stock order to the USA or Europe?
A: Standard in-stock orders are processed and dispatched within 48 hours. Depending on your location, air freight typically takes 5-7 business days to arrive at your facility.
Q2: Is GH3030 technically interchangeable with Alloy 75 in my project?
A: Yes. The GH3030 is a replacement for the globally compatible Nimonic 75 / UNS N06075. We provide complete technical documentation to ensure your engineering team can approve this replacement with 100% confidence.
Q3: Do you offer welding or bending services for these pipes?
A: Absolutely. Our fabrication shop can provide precision U-bending, flanging, and pre-welded assemblies, saving you labor time on the job site.
Q4: What is the benefit of the Bright Annealed (BA) finish for industrial pipes?
A: A BA finish ensures the internal diameter (ID) is free from oxidation scale. This prevents the system contamination and sensor clogging that occurs with standard pickled pipes at 800°C.
