Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | ,T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30 days |
| Packaging Details | Pallet |
| Material | 42CrMo4, 18CrNiMo7-6 |
| Machining | roughing |
| Heat Treatment | Annealed and normalized, or customized |
| Forging Tolerance | On request |
| Testing | UT & MT |
| Oil Protecting | Provided |
| Hardness | Customized according to the provided standards |
| 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 | 42CrMo4, 18CrNiMo7-6 | Machining | roughing |
| Heat Treatment | Annealed and normalized, or customized | Forging Tolerance | On request |
| Testing | UT & MT | Oil Protecting | Provided |
| Hardness | Customized according to the provided standards | HS Code | 84834999 |
| Brand Name | Tiangong | Model Number | TG-005 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | 42CrMo4 Forged Cylinder ，Hydraulic Presses Forged Cylinder ，Port Equipment Forged Cylinder | ||
42CrMo4 Forged Cylinder for Hydraulic Presses and Port Equipment.
Our 42CrMo4 forged cylinders are specifically engineered for high-pressure and heavy-load applications such as hydraulic presses and port handling equipment. Produced through open die forging and followed by precision heat treatment, these cylinders offer excellent tensile strength, impact toughness, and fatigue resistance. Their uniform grain flow and enhanced structural integrity ensure reliable performance under continuous stress, making them ideal for mission-critical components in harsh industrial environments.
| Item | Details |
|---|---|
| Product Name | 42CrMo4 Forged Cylinder for Hydraulic Presses and Port Equipment |
| Material Grades | - Alloy steel: 42CrMo4 (DIN 1.7225), ideal for high-load, high-pressure applications - Excellent balance of toughness, fatigue resistance, and hardenability |
| Forging Equipment | - Hydraulic Hammers & Presses: 5T, 8T, 12T - Capable of open die forging large cylindrical sections with uniform grain flow |
| Manufacturing Process | Material Inspection → Heating → Open Die Forging → Heat Treatment (Q+T) → Rough or Finish Machining → NDT → Dimensional Inspection → Packaging |
| Forging Ratio | ≥ 3.0 — Ensures directional fiber structure, reduced internal defects, and extended fatigue life under cyclic pressure loads |
| Applications | - Hydraulic press cylinders and piston sleeves - Drive cylinders for port lifting and gantry crane systems - Tubular forged parts for heavy-duty hydraulic and pneumatic systems |
| Delivery Conditions | - Standard: Quenched + Tempered (Q+T) - Optional: Normalized + Tempered, semi-machined, or as-forged upon request |
| Testing & Inspection | - Chemical Composition: Verified by Optical Emission Spectrometry - Mechanical Tests: Tensile strength, hardness, impact testing - NDT: Ultrasonic Testing (UT), Magnetic Particle Testing (MT) - Dimensional Control: Full inspection of outer diameter, inner bore, and roundness |
Material Grade: 42CrMo4 (DIN 1.7225), known for superior strength and hardenability
Forging Method: Open die forging with ≥3.0 forging ratio for enhanced grain structure
Heat Treatment: Quenched and tempered (Q+T) for improved mechanical performance
High Load Capacity: Ideal for dynamic and high-pressure systems
Excellent Machinability: Suitable for deep boring, honing, and custom flange machining
Size Range: 100 to 7000 kg
Hydraulic Presses: Cylinder housings, piston sleeves, press columns
Port Equipment: Lift system cylinders, gantry crane drive modules
Heavy Machinery: Forged casings for hydraulic and pneumatic power units
Energy Sector: Pressure-retaining forged parts for turbine and compressor systems
Offshore & Marine: Load-bearing tubular components for jack-up rigs and hoisting systems
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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