Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of astm b241 1100-h112 aluminum seamless pipe in China. With abundant experience, we warmly welcome you to wholesale high quality astm b241 1100-h112 aluminum seamless pipe in stock here from our factory. Good service and reasonable price are available.
When sourcing fluid transfer components for chemical processing or food-grade systems, material purity and structural integrity are your primary concerns. Unlike welded tubes, seamless aluminum pipes eliminate the risk of seam failures under pressure or in corrosive environments.
With a minimum aluminum purity of 99.0%, the 1100 alloy offers superior workability. As a reliable China aluminum pipe manufacturer, GNEE supplies this piping material to global buyers seeking stable quality and strict compliance with ASME SB241 and ASTM B241 standards.
1100-H112 Aluminum Seamless Pipe Description
The 1100 aluminum alloy is commercially pure aluminum. It does not respond to heat treatment, meaning its strength is achieved through cold working or hot working. The "H112" temper indicates that the pipe is manufactured through hot extrusion without strict mechanical property limits, providing a balanced state of moderate strength and high formability.
Chemical Composition Aluminum 1100 Seamless Pipe
| Element | Content (%) |
|---|---|
| Aluminum (Al) | ≥ 99.00 |
| Silicon (Si) + Iron (Fe) | ≤ 1.00 |
| Copper (Cu) | 0.05 – 0.20 |
| Manganese (Mn) | ≤ 0.05 |
| Zinc (Zn) | ≤ 0.10 |
| Others (each) | ≤ 0.05 |
| Others (total) | ≤ 0.15 |
Mechanical Properties 1100-H112 Aluminum Seamless Pipe
| Property | Typical Value |
|---|---|
| Tensile Strength | 90 – 120 MPa |
| Yield Strength | ≥ 35 MPa |
| Elongation | ≥ 15% |
| Hardness (HB) | 25 – 35 |
Note: H112 is a hot-worked temper without strict mechanical limits; values are typical reference ranges.
Core Applications of 1100-H112 Aluminum Pipes
Due to its unique combination of properties, this pipe is heavily utilized across several non-structural industrial sectors:
- Chemical Processing: Transport lines for hydrogen peroxide, concentrated nitric acid, and other chemicals that do not aggressively attack high-purity aluminum.
- Food and Beverage: Sanitary transfer lines where a smooth, easily cleanable inner surface is required to maintain food-grade standards.
- Heat Exchangers & Condensers: Evaporator tubes and cooling coils that rely on the exceptional 220 W/m·K thermal conductivity.
- HVAC Systems: Refrigerant conduits where tight bending radii are required during installation.
- Electrical Applications: Protective busbar enclosures and high-voltage conductor conduits due to its excellent electrical conductivity.
The Seamless Extrusion Manufacturing Process
The term "seamless" is not just a marketing phrase; it is a critical mechanical requirement for pressurized or corrosive environments. Our production of ASTM B241 Aluminum 1100-H112 Seamless Pipe involves a highly controlled hot extrusion process:
- Billet Homogenization: High-purity commercial aluminum billets are cast and thermally homogenized to ensure a uniform grain structure.
- Pre-Heating: The billet is heated to a precise plastic state (typically between 400°C and 450°C) to optimize material flow.
- Piercing and Extrusion: A specialized mandrel pierces the hot billet. A hydraulic ram then pushes the aluminum through a die cavity around the mandrel. Because the metal flows continuously without being split and welded back together, the pipe is 100% structurally seamless.
- Cooling and Sizing: The extruded pipe undergoes controlled cooling. It is then stretch-straightened to remove internal stresses and ensure strict adherence to dimensional tolerances (OD, ID, and straightness).
- Finishing: The pipes are precision-cut, deburred, and prepared for final inspection.
1100-H112 Aluminum Seamless Pipe Specifications
When evaluating wholesale 1100-H112 seamless aluminum tubes for your project, dimensional accuracy and standard compliance are critical. Our production line strictly adheres to the dimensional tolerances specified in ASTM B241 and ASME SB241.
| Item | Description |
|---|---|
| Standard | ASTM B241 / ASME SB241 |
| Alloy | 1100 |
| Temper | H112 |
| Type | Seamless Pipe |
| Outer Diameter | 10 – 500 mm |
| Wall Thickness | 1 – 50 mm |
| Length | 3m / 6m / Custom |
| Surface | Mill finish / Polished / Anodized |
| Manufacturing Process | Extruded Seamless |
Are you facing localized corrosion, material fatigue, or pressure drops in your current pipeline system? Don't guess which alloy you need. Send your operating parameters (temperature, pressure medium, flow rate) to our technical team. We provide free engineering assessments to ensure you source the exact seamless pipe specification your project demands.
Request Free Technical Assessment
Technical Material Comparison
Procurement managers often evaluate multiple aluminum grades before making a purchasing decision. Understanding the metallurgical differences is crucial to prevent pipeline failure or overspending on unnecessary specifications.
1100-H112 vs. 3003-H14 Aluminum Pipe
The 3003-H14 aluminum pipe is alloyed with approximately 1.2% manganese, making it about 20% stronger than the 1100 alloy. If your pipeline operates under moderate internal pressure, 3003 is the industry standard. However, the higher purity of 1100-H112 provides noticeably better corrosion resistance in specific chemical environments and offers higher thermal conductivity (approx. 220 W/m·K for 1100 vs. 190 W/m·K for 3003), making 1100 the superior choice for heat exchangers and sensitive fluid transfer.
1100-H112 vs. 5052-H32 Aluminum Pipe
The 5052-H32 aluminum pipe incorporates magnesium, classifying it as a marine-grade alloy with excellent resistance to saltwater corrosion and significantly higher fatigue strength. However, 5052 is harder and more difficult to bend. If your application involves routing pipes through tight spaces in non-marine, non-load-bearing equipment (such as food processing lines), the formability and lower raw material cost of the 1100-H112 make it more cost-effective.
1100-H112 vs. 6061-T6 Extruded Tube
The 6061-T6 extruded tube is a structural powerhouse, alloyed with magnesium and silicon, and heat-treated for maximum yield strength (often exceeding 240 MPa). It is used for structural frames, high-pressure hydraulic systems, and aerospace components. In contrast, 1100-H112 has very low strength and is strictly intended for non-structural, low-pressure applications like HVAC conduits, condenser tubes, and chemical drip lines.
Why Choose gnee
Quality Control & Certifications
Industrial procurement leaves no room for material inconsistency. Every batch of ASTM B241 Aluminum 1100-H112 Seamless Pipe undergoes rigorous testing in our on-site laboratory.
- Chemical Analysis: Optical Emission Spectrometry (OES) verifies the 99.0% aluminum purity.
- Dimensional Verification: Laser micrometers and ultrasonic thickness gauges confirm outer diameter and wall thickness tolerances.
- Mechanical Testing: Universal testing machines validate yield strength and elongation limits.
- Non-Destructive Testing (NDT): Eddy current testing ensures there are no hidden internal flaws, porosity, or inclusions in the seamless wall.
- Traceability: We issue an EN 10204 3.1 Mill Test Certificate (MTC) with every shipment, detailing the specific heat number, chemical makeup, and mechanical test results for your internal compliance records.
Export Packaging and Global Delivery Logistics
We understand that improper packaging can ruin high-purity aluminum during transit. Our export packaging protocol is designed to withstand rough port handling and oceanic climate conditions.
- End Protection: Heavy-duty plastic caps are fitted to both ends of every pipe to protect bevels and prevent debris or moisture from entering the bore.
- Surface Protection: Pipes are bundled using soft nylon strapping-never steel bands, which can cause galvanic corrosion and physical denting. The bundles are then wrapped in thick, waterproof polyethylene film.
- Crating: For LCL (Less than Container Load) shipments or customized high-value extrusions, the bundles are securely packed in ISPM-15 compliant fumigated wooden cases.
- Delivery Turnaround: Standard sizes (e.g., 1-inch to 4-inch OD) can often be supplied from existing billet inventory for rapid extrusion, ensuring minimal lead times for urgent project deadlines.
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