Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Surface Treatment | Smooth, anti-rust oil |
| Weight | 100 KG-7 TON or According to the drawing |
| Type | Free Forging |
| Application | Heavy Duty Hydraulic Cylinder Base Structure Components |
| Durability | Long-lasting |
| Strength | High |
| Resistance | Corrosion, wear, and impact |
| Process | Forging &Rough Machining |
| Brand Name | Tian Gong |
| Model Number | TG-221 |
| 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 | Smooth, anti-rust oil | Weight | 100 KG-7 TON or According to the drawing |
| Type | Free Forging | Application | Heavy Duty Hydraulic Cylinder Base Structure Components |
| Durability | Long-lasting | Strength | High |
| Resistance | Corrosion, wear, and impact | Process | Forging &Rough Machining |
| Brand Name | Tian Gong | Model Number | TG-221 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | heavy duty hydraulic cylinder block ，free forging steel base structure ，hydraulic cylinder forging components | ||
This free-forged steel block is engineered specifically for the base structure of heavy-duty hydraulic cylinders, where outstanding strength, dimensional stability, and long-term reliability are essential. Produced through precision-controlled free forging, the block features a refined internal grain structure and superior metallurgical soundness, ensuring excellent resistance to high pressure, shock loads, and continuous cyclic forces commonly encountered in industrial hydraulic systems.
High Structural Integrity – Free forging delivers a dense, defect-free internal structure with improved mechanical properties compared with cast or fabricated blocks.
Superior Load-Bearing Strength – Supports extreme hydraulic pressures and large bending forces, ideal for heavy-duty cylinder base assemblies.
Enhanced Toughness & Fatigue Resistance – Optimized heat treatment ensures stable performance under continuous high-stress operating conditions.
Dimensional Stability – Suitable for precision machining after forging, maintaining accurate tolerances for cylinder installation interfaces.
Material Flexibility – Available in carbon steel and alloy steel grades such as 42CrMo, 45#, 20CrNi2Mo, and customized specifications.
Hydraulic cylinders for heavy construction machinery – excavators, loaders, dozers, piling rigs
Industrial hydraulic presses and forming machinery
Port and lifting equipment hydraulic systems
Mining and metallurgical equipment requiring high-pressure cylinder bases
Oil & gas hydraulic power units and actuator assemblies
| Item | Details |
|---|---|
| Product Name | Free Forging Steel Block for Heavy Duty Hydraulic Cylinder Base Structure Components |
| Material Grades | - Alloy steels such as 42CrMo, 45#, 18CrNiMo7-6,20CrNi2Mo — selected for high tensile strength, excellent toughness, and superior wear resistance- Materials optimized to withstand high-pressure hydraulic loads and repetitive cyclic stresses |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T — suitable for forging thick-section steel blocks- Open-die forging presses (up to 3600T) — ensures dense, uniform grain flow and defect-free internal structure- Specialized tooling for precise block geometry and machining allowances |
| Manufacturing Process | Raw material inspection → Controlled preheating → Free forging (block shaping) → Heat Treatment (quenching + tempering) → Intermediate quality checks → Rough machining of critical surfaces → Non-destructive testing (UT, MT) → Final dimensional inspection → Protective packaging |
| Forging Ratio | ≥ 3.0 — Promotes aligned fiber structure, high fatigue resistance, and superior mechanical integrity under high-pressure hydraulic operations |
| Applications | - Base components of hydraulic cylinders in heavy construction machinery (excavators, loaders, piling rigs)- Industrial hydraulic presses and forming machines- Hydraulic systems in port handling equipment and lifting units- Mining, metallurgical, and oil & gas high-pressure hydraulic equipment |
| Heat Treatment Options | - Quenched + Tempered — Achieves high load-bearing capacity and core toughness- Optional stress relieving for improved dimensional stability- Surface treatments available to enhance wear resistance and prevent corrosion |
| Testing & Inspection | - Chemical: Spectrometer analysis for alloy verification- Mechanical: Tensile, yield strength, hardness, and impact toughness tests- Non-destructive testing: Ultrasonic Testing (UT), Magnetic Particle Testing (MT)- Dimensional: Verification of block height, width, bore positions, and flatness |
| Value-Added Services | - Precision machining of mounting surfaces, bolt holes, and cylinder interfaces- Surface finishing such as shot blasting, painting, or anti-corrosion coating- Export-quality packaging for overseas shipping- Full traceability: heat number, batch number, and certified mechanical & NDT reports |
Steel ingots are inspected and stored → Cut to size → Heated under controlled conditions → Forged and heat-treated → Preliminary blank inspection → Rough machining → In-process quality checks (UT, MT, dimensional, hardness) → Quenching and tempering → Post-heat-treatment inspection → Finish machining → Final dimensional check → Marking, packaging, and storage for shipment.
1. What is your forging capacity?
We produce forged parts ranging from 100 kg to 7,000 kg, covering both medium-sized machinery and heavy-duty industrial applications.
2. Do you provide heat treatment and machining?
Yes. Our facility handles full in-house heat treatment, along with rough machining and precision CNC finishing, ensuring all components meet exact customer specifications.
3. Which industries use your products?
Our forgings are commonly applied in wind energy, heavy industrial machinery, port handling equipment, power transmission systems, and other demanding industrial sectors.
4. What are your typical lead times?
Stock items: around 30 days
Custom forgings: generally 40–45 days, depending on size, material, and complexity
5. Where is your manufacturing facility located?
Our factory is located in Changzhou, Jiangsu Province, near Shanghai, enabling efficient logistics and export via Shanghai Port.
Please provide your technical drawings and detailed requirements. Our engineering team will review the information and deliver a customized quotation and solution promptly.
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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