Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Forging Weight | 100kg|100kg-7ton |
| Dimensions | According To Drawings|Non-Standard |
| Steel Grade | alloy steel:20CrMnMo 42CrMo4 |
| Third Party Inspection | TUV or other available inspection |
| Strength | High |
| Machinery | CNC-Machine |
| Heating Treatment | N+T Q+T |
| Application | Industrial Machinery |
| Brand Name | Tian Gong |
| Model Number | TG-108 |
| 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 |
| Forging Weight | 100kg|100kg-7ton | Dimensions | According To Drawings|Non-Standard |
| Steel Grade | alloy steel:20CrMnMo 42CrMo4 | Third Party Inspection | TUV or other available inspection |
| Strength | High | Machinery | CNC-Machine |
| Heating Treatment | N+T Q+T | Application | Industrial Machinery |
| Brand Name | Tian Gong | Model Number | TG-108 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | 20CrMnMo Forged Disc ，42CrMo4 Forged Disc Heavy Duty ，CNC Alloy Steel Forgings OEM | ||
20CrMnMo 42CrMo4 Heavy Duty Industrial Alloy Steel Forgings Disc. Our heavy-duty industrial alloy steel forging discs are made from high-grade 20CrMnMo and 42CrMo4 steels. Forging enhances their strength, toughness, and fatigue resistance by refining the grain structure and eliminating defects. These discs are ideal for critical load-bearing and rotational applications, serving as blanks for gears, flanges, and other high-performance components.
These discs are vital for high-stress applications in:
| Item | Details |
|---|---|
| Product Name | 20CrMnMo 42CrMo4 Heavy Duty Industrial Alloy Steel Forgings Disc |
| Material Grades | - Alloy steels suitable for boring and rotary stress resistance: e.g., 42CrMo4, 18CrNiMo7-6 - Excellent machinability and impact absorption - Specifically adapted for inner bore formation while retaining high outer wall strength |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T capacity - Configured for forging of bored shafts, thick-wall rings, and tubular blanks - Enables near-net shape forging with axial bore requirements |
| Manufacturing Process | Hot Forging → Thermal Refinement → Boring / Core Machining → Rough or Precision Machining → Dimensional & Integrity Evaluation |
| Forging Ratio | ≥ 3.0 — Delivers improved fiber orientation along the rotational axis, minimizing internal defects and optimizing rotational balance under dynamic stress |
| Applications | Heavy Duty Industrial |
| Heat Treatment Options | - Normalized + Tempered based on strength requirements - Intermediate stress relieving available prior to final machining |
| Testing & Inspection | - Chemical Composition: Spectrometer validation for alloy uniformity - Mechanical Properties: Hardness profiling, tensile, and impact strength - Ultrasonic Examination: Multi-angle UT scanning for hollow bore consistency - Dimensional Testing: Bore tolerance, straightness, wall thickness verification |
| Value-Added Services | - Custom boring diameter, length, and wall profile options - Pre-machined surfaces, protective packaging, anti-corrosion measures - Support for export handling, part labeling, and marine-ready logistics |
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.
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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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