Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | ,T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30 days |
| Packaging Details | Pallet |
| Material | 42CrMo, 18CrNiMo7-6 ,4140, 40CrNiMo |
| Production Lead time | 30 days |
| Machining | CNC Rough Machining or Forged Blanks |
| Heat Treatment | Normalizing and tempering + Quenching |
| Forging Tolerance | +/-0.1mm |
| Testing | UT & MT |
| Oil Protecting | Provided |
| Hardness | 200-400 HB as Demand |
| HS Code | 84834999 |
| Brand Name | Tiangong |
| Model Number | TG-005 |
| 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 | 30 days | Packaging Details | Pallet |
| Material | 42CrMo, 18CrNiMo7-6 ,4140, 40CrNiMo | Production Lead time | 30 days |
| Machining | CNC Rough Machining or Forged Blanks | Heat Treatment | Normalizing and tempering + Quenching |
| Forging Tolerance | +/-0.1mm | Testing | UT & MT |
| Oil Protecting | Provided | Hardness | 200-400 HB as Demand |
| HS Code | 84834999 | Brand Name | Tiangong |
| Model Number | TG-005 | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | Power Transmission Carbon Steel Forged ，industrial gas cylinder OEM ，forging high carbon steel | ||
100-7000KGS Heavy Duty Power Transmission Carbon Steel Forged Round Pin For Gearbox. Our heavy-duty forged round pins are available in a wide range of sizes from 100 kg to 7000 kg and are engineered for use in high-load power transmission systems and large-scale industrial gearboxes. Manufactured from premium carbon steel via open die forging, these pins provide outstanding tensile strength, fatigue resistance, and dimensional consistency. After heat treatment, they deliver excellent performance in high-torque, repetitive-motion environments, ensuring long service life and mechanical reliability.
| Material | 4140,4130,18CrNiMo7-6,4340,4330,1.7225,35# 45# 20CrMnTi 20CrNi2Mo 20CrMnMo 18CrNiMo7-6 42CrMo 20CrNo 35CrMo |
| 5 TON, 8 TON, 12 TON Hydralic hammer | |
| Apply for | Transmission main shaft is used for driving force |
| Forging+heat treatment+rough machining+finish machining | |
| Forging ratio | ≥3 |
| Delivery terms | Rough machining(N+T); finish machining(Q+T) |
| Test equipment | Spectrograph, UT device, tensile and impact test machine, metalloscope,external micrometer, bore dial indicator, hardness testing device and so on. |
| Service | Our service included the forging, process, heat treatment, finish machining, package, local logistics, customers clearance and maritime transport. We took the customer’s requirements as the principal thing, and pay attention on the products quality. |
Wide Weight Range: From 100 kg to 7000 kg, supporting small to ultra-heavy gear systems
High-Strength Carbon Steel: Offers superior tensile properties and shock resistance
Precision Forged: Open die forging ensures uniform structure and directional fiber flow
Heat Treated: Quenched and tempered for improved hardness and fatigue life
Machinability: Suitable for turning, milling, drilling, and keyway slotting
Custom Tolerances: Machined to drawing specifications for bore fits, ends, or surface profiles
Industrial Gearboxes: Main transmission pins, gear connection shafts, locating pins
Wind Power Systems: Gear alignment pins and rotor-to-generator connections
Mining Equipment: Torque-transferring round pins for crushers and mill drives
Steel Plants & Press Lines: Forged pins used in couplings, rotary joints, and tool changers
Heavy Machinery: Linkage and rotating shaft applications in construction and material handling
More products we are producing:
The steel forgings production flow:
1. What is your forging weight capacity?
We manufacture forged components ranging from 100 kg to 7000 kg, suitable for both medium and large-scale applications.
2. Do you offer heat treatment and machining services?
Yes. We provide comprehensive in-house heat treatment, as well as both rough and final machining upon request.
3. Which industries do you typically work with?
We supply forged parts to industries including wind power, heavy equipment, port machinery, and power transmission systems.
4. What is your typical production lead time?
With raw material in stock: Approximately 30 days
Without stock: Usually 40–45 days, depending on material and processing scope
5. Where is your facility located?
Our factory is located in Changzhou City, close to Shanghai, with shipments handled through Shanghai Port.
Please share your technical drawings and specifications with us.
Our team will review the details and provide a prompt quotation and technical 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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