Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Surface Treatment | Heat Treatment |
| Tolerance | ±0.02mm |
| Size | Customized according to customer requirements |
| Weight | 100KG-7TON |
| Type | Free Forging |
| Application | Machinery, Automotive, Mining, Construction |
| Processing Method | 20CrMnTi or Customized |
| Packing | Wooden Case or Customized |
| Brand Name | Tian Gong |
| 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 |
| Surface Treatment | Heat Treatment | Tolerance | ±0.02mm |
| Size | Customized according to customer requirements | Weight | 100KG-7TON |
| Type | Free Forging | Application | Machinery, Automotive, Mining, Construction |
| Processing Method | 20CrMnTi or Customized | Packing | Wooden Case or Customized |
| Brand Name | Tian Gong | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | 20crmnti drive shaft spindle ，drive shaft spindle high speed ，low speed cold forged components | ||
20CrMnTi Drive Shaft Spindle High Speed Shaft Low Speed Shaft Free Forging. Our 20CrMnTi forged shafts are high-performance components made using free forging. This process ensures superior strength, toughness, and wear resistance by optimizing the internal grain structure. Ideal as drive shafts, spindles, high-speed, or low-speed shafts, they transmit power and support rotation in demanding industrial settings.
These robust forged shafts are crucial for:
| Item | Details |
|---|---|
| Product Name | 20CrMnTi Drive Shaft Spindle High Speed Shaft Low Speed Shaft Free Forging |
| Material Grades | - Case-hardening steel: 20CrMnTi - Excellent wear resistance, core toughness, and dimensional stability after carburizing and quenching - Optimized for spline shafts under rotational and axial stress in solar tracking systems |
| Forging Equipment | - Hydraulic hammers: 3T / 5T / 8T - Open-die forging press with axial forming capabilities - Supports spline shaft forgings with precise grain orientation and improved fiber continuity |
| Manufacturing Process | Hot Forging → Carburizing / Q+T Heat Treatment → Spline Pre-Machining → Ultrasonic & Dimensional Inspection → Optional Surface Treatment |
| Forging Ratio | ≥ 3.0 — Enhances fatigue strength and wear resistance by aligning grain flow along spline direction and shaft axis |
| Applications | - Spline shafts for single-axis and dual-axis solar tracker actuators - Rotary drive links and transmission couplings - Ideal for outdoor PV plants with dynamic load adjustments |
| Heat Treatment Options | Quenched + Tempered for general structural use - Optional stress relief to enhance dimensional stability before finish machining |
| Testing & Inspection | - Chemical: Spectrometer-controlled material composition validation - Mechanical: Hardness (surface/core), tensile, yield, impact testing - Ultrasonic (UT): Focused inspection of spline root and shaft body - Dimensional: Spline profile accuracy, runout, diameter, concentricity |
| Value-Added Services | - Pre-machining of spline teeth, journal ends, keyways, shoulders - Surface coatings: phosphating, zinc plating, or anti-rust oil - Custom shaft lengths, bore features, and end configurations - Steel banding, end cap protection, heat number traceability |
The steel forgings production flow:
Raw material steel ingot into warehouse(test the chemical composition) → Cutting→ Heating(Furnace temperature test) → Heat treatment after forging(Furnace temperature test) Discharge the furnace(blank inspection)→ Machining→ Inspection(UT,MT,Visal dimension, hardness)→ QT→ Inspection(UT, mechanical properties, hardness, grain size)→ Finish machining→ Inspection (dimension)→ Packing and Marking(steel stamp, mark)→ Storage Shipment.
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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