Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Heat Treatment | Normalizing and tempering |
| Transport Package | Pallet or As per the customer's requirements |
| Machining | CNC turning and milling |
| Surface Finish | Smooth or Customizable |
| Advantages | High strength, excellent fatigue resistance, improved mechanical properties, cost-effective |
| Type | Open die forging |
| Material | Alloy Steel |
| Apply | Wind Turbine Main Shaft Applications |
| 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 |
| Heat Treatment | Normalizing and tempering | Transport Package | Pallet or As per the customer's requirements |
| Machining | CNC turning and milling | Surface Finish | Smooth or Customizable |
| Advantages | High strength, excellent fatigue resistance, improved mechanical properties, cost-effective | Type | Open die forging |
| Material | Alloy Steel | Apply | Wind Turbine Main Shaft Applications |
| Brand Name | Tiangong | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | alloy steel open die forgings ，open die forgings turbine shaft ，turbine shaft alloy steel forgings | ||
Large Alloy Steel Open Die Forgings for Wind Turbine Main Shaft Applications. Our Large Alloy Steel Open Die Forgings are specifically engineered for wind turbine main shaft applications, offering exceptional performance under high torsional loads and fluctuating environmental conditions. Manufactured from high-strength alloy steels such as 42CrMo4, 18CrNiMo7-6, or customer-specified grades, these forgings exhibit excellent toughness, fatigue resistance, and dimensional stability.
Produced using open die forging with Electrohydraulic hammer , each piece is heat treated and rough according to customer specifications. The typical forging ratio ≥ 3.0 ensures uniform grain flow and improved internal integrity, essential for the demanding lifecycle of offshore and onshore wind turbines.
Key Features
Material Options: Premium alloy steels tailored for high load and fatigue performance
Max Size: Outer diameter up to 3000 mm, single-piece weight up to 12 tons
Forging Process: Open die forging → Heat treatment → Machining → NDT
Mechanical Properties: High tensile strength, impact toughness, and torsional resistance
Delivery Condition: As-forged, rough-machined, or fully finished as required
Applications
Main shafts in onshore and offshore wind turbine gearboxes
Hub connections and structural support forgings in large wind systems
Other large rotary components exposed to cyclic stress and harsh environments
| Item | Details |
|---|---|
| Product Name | Large Alloy Steel Open Die Forgings for Wind Turbine Main Shaft Applications |
| Material Grades | - Alloy steels such as 42CrMo4, or customized grades designed for main shaft performance in wind turbines |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Capable of open die forging for extra-large shafts |
| Manufacturing Process | Raw Material Inspection → Unloading → Preheating → Open Die Forging → Heat Treatment → Rough Machining → NDT → Final Machining (if required) → Dimensional Inspection → Packaging → Delivery |
| Forging Ratio | ≥ 3.0 — Improves internal structure, directional grain flow, and overall fatigue resistance of the shaft during long-term turbine operation |
| Applications | - Main shafts in onshore and offshore wind turbines - Rotor hub connection forgings - Large structural rotary components exposed to variable torque and axial loads |
| Delivery Conditions | - Normalized + Tempered for improved toughness and structural reliability - Optional annealing available based on downstream processing and machining needs |
| Testing & Inspection | - Chemical Analysis via Optical Emission Spectrometry - Mechanical Testing: Tensile, Impact, Hardness - Non-Destructive Testing: Ultrasonic (UT), Magnetic Particle (MT) - Dimensional and shape inspections using precision metrology tools |
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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