Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Application | Gear Shaft Manufacturing |
| Quality Control | Ultrasonic tested ，Dimensional inspection |
| Material | 45#, 35# or Customized |
| Production Process | Forging, heat treatment, rough machining, testing |
| Hardness | Customized |
| Surface Finish | Smooth |
| Heat Treatment | Normalizing and tempering |
| Size | Customized according to drawings |
| Brand Name | Tiangong |
| Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 56000 Tons per year |
| Delivery Time | 30days | Packaging Details | Pallet |
| Application | Gear Shaft Manufacturing | Quality Control | Ultrasonic tested ，Dimensional inspection |
| Material | 45#, 35# or Customized | Production Process | Forging, heat treatment, rough machining, testing |
| Hardness | Customized | Surface Finish | Smooth |
| Heat Treatment | Normalizing and tempering | Size | Customized according to drawings |
| Brand Name | Tiangong | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | custom carbon steel blank ，steel forging blank custom ，high density steel forging blank | ||
Material Options: High-quality carbon steel grades such as 35#, 45#, or customized compositions
Dense Internal Structure: Enhanced through ≥3.0 forging ratio to eliminate porosity and internal defects
Optimized Grain Flow: Aligned along shaft axis for superior torque transmission and fatigue strength
Excellent Machinability: Suitable for gear hobbing, milling, and turning operations
Gear shafts, transmission shafts, spline shafts, and stepped shafts
Widely used in gearboxes, reduction units, wind turbines, mining machinery, and heavy-duty industrial drives
Engineered to handle rotational stress, shock loading, and long service cycles
| Item | Details |
|---|---|
| Product Name | High-Density Forged Carbon Steel Blank for Gear Shaft Manufacturing |
| Material Grades | - High-strength carbon steels: 35#, 45#, customized grades available - Excellent tensile strength, impact toughness, and fatigue resistance - Designed for gear shaft cores and stepped shaft applications under torque and dynamic loading |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - Large open-die forging press with optional core boring capability - Supports near-net shape forging for long shafts with solid or bored centers |
| Manufacturing Process | Hot Forging → Intermediate Heat Treatment → Optional Core Boring / Drilling → Rough / Semi-Finish Machining → UT & Dimensional Inspection |
| Forging Ratio | ≥ 3.0 — Promotes directional grain flow along shaft axis, ensuring excellent torque transmission and fatigue resistance |
| Applications | - Gear shafts, transmission shafts, coupling blanks, and stepped mechanical shafts - Widely used in gearboxes, wind turbines, heavy-duty industrial drives, and construction equipment - Withstands high torsional loads, impact forces, and cyclic stresses |
| Heat Treatment Options | - Quenched + Tempered for improved strength and wear resistance - Optional stress relief to maintain dimensional accuracy before final machining |
| Testing & Inspection | - Chemical: Spectrometer-controlled composition analysis - Mechanical: Hardness, tensile, yield, impact toughness - Ultrasonic (UT): Multi-angle flaw detection, including bore zone (if applicable) - Dimensional: Length, diameter, straightness, concentricity, and flatness |
| Value-Added Services | - Custom shaft geometries: bore size, shoulders, spline zones, flanges - Pre-machined journals, grooves, or stepped ends for gear integration - Rust-preventive coating, protective end caps, steel banding & export crate packaging - Laser part marking, OEM branding, and full traceability options |
The steel forgings production flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
We produce forged parts weighing anywhere from 100 kg to 7,000 kg.
Yes, we offer comprehensive services, including full in-house heat treatment, rough machining, and finish machining.
We proudly serve a variety of industries, including wind energy, heavy equipment, port machinery, and transmission systems.
Our production lead times vary:
Our factory is in Changzhou City, near Shanghai, making shipping convenient via Shanghai Port.
Ready to get started? Please send your technical drawings and requirements our way. Our engineers will promptly review them and provide you with a professional quotation and a tailored solution.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
27.5 million -28 million
Employee Number:
135~150
Ecer Certification：
Verified Supplier
About CHANGZHOU TIANGONG We are a Chinese company with over 30 years of forging experience. Our focus lies in the production of machine free forged products. We take pride in our independent quality assurance laboratory, which ensures that all our products meet ... About CHANGZHOU TIANGONG We are a Chinese company with over 30 years of forging experience. Our focus lies in the production of machine free forged products. We take pride in our independent quality assurance laboratory, which ensures that all our products meet ...
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