Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Material | 4140/42CrMo4 |
| Origin Of Goods | Changzhou, Jiangsu |
| Other Name | Forged Gear |
| Industry | Free Forging & Open Die Forging |
| Tolerance | High precision |
| Forging Weight | 100kg|100kg-7ton |
| Machining | Rough Machining |
| Dimensions | Customizable |
| Brand Name | Tiangong |
| Model Number | Tiangong 65 |
| 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 |
| Material | 4140/42CrMo4 | Origin Of Goods | Changzhou, Jiangsu |
| Other Name | Forged Gear | Industry | Free Forging & Open Die Forging |
| Tolerance | High precision | Forging Weight | 100kg|100kg-7ton |
| Machining | Rough Machining | Dimensions | Customizable |
| Brand Name | Tiangong | Model Number | Tiangong 65 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | Industrial mild steel gears 4140 ，mild steel gears 42CrMo4 ，42CrMo4 Drive Shaft Forged | ||
Industrial Drive Shaft Forged from 4140/42CrMo4 Steel for Wind & Port Machinery. Our industrial drive shafts are precision-forged from high-quality 4140 / 42CrMo4 alloy steel, known for their excellent toughness, fatigue resistance, and high tensile strength. These forged components are engineered to meet the rigorous demands of heavy-duty applications, especially in wind power systems, port handling equipment, and marine machinery.
| Item | Details |
|---|---|
| Product Name | Industrial Drive Shaft Forged from 4140/42CrMo4 Steel for Wind & Port Machinery |
| Material Grades | 4140/42CrMo4 |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Supports large-section open die forging |
| Manufacturing Process | Forging → Heat Treatment → Rough Machining → Dimensional & NDT Inspection |
| Forging Ratio | ≥ 3.0 — Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation |
| Applications | wind turbines, port cranes, hoisting systems, mining crushers, and industrial gearboxes, where high strength, torque resistance, and durability are required. |
| Delivery Conditions | - N+T (Normalized + Tempered): For pre-machined rough parts |
| Testing & Inspection | - Chemical Analysis: Optical Emission Spectrometry - Mechanical Tests: Tensile , Impact - NDT: UT , MT - Dimensional Control: Bore dial indicators, precision micrometers - Metallography: Grain size & microstructure |
Key Features:
Material: Premium 4140 / 42CrMo4 alloy steel for optimal mechanical properties
Process: Free forging or die forging with strict metallurgical controls
Applications: Wind turbine gearboxes, port cranes, heavy-duty industrial transmissions
Heat Treatment: Normalizing, quenching, and tempering for maximum durability
Customization: Sizes and specifications tailored to your exact needs
Standards: ISO 9001, ISO 14001, ISO 45001 certified manufacturing process
Advantages:
High strength and toughness
Excellent fatigue and wear resistance
Custom sizes and machining available
OEM/ODM service based on drawings
Weight Range: 100 kg – 7 tons (customized to accommodate both medium-size drive shafts and large-section marine components)
Grain Structure: Refined through forging ratio ≥3.0 and controlled heat treatment
Dimensional Tolerance: Custom tolerances per project needs
Process flow:
raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.
Frequently Asked Questions (FAQs)
1. What is your forging weight range?
We produce forged parts ranging from 100 kg to 7000 kg.
2. Do you provide heat treatment and machining?
Yes, we offer full in-house heat treatment, rough, and finish machining services.
3. Which industries do you supply to?
We serve wind energy, heavy equipment, port machinery, transmission systems, and more.
4. What is your production lead time?
With stock: Around 30 days
Without stock: 40–45 days
5. Where is your factory located?
In Changzhou City, near Shanghai, with shipping via Shanghai Port.
Request a Quote
Please send your technical drawings and requirements to us. Our engineers will review and provide you with a professional quotation and solution shortly.
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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