Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Carbon Steel,Alloy Steel High-Quality Steel Block for Construction Machines. We provide premium-grade forged steel blocks made from carbon steel and alloy steel, specifically engineered for use in heavy-duty construction machinery components. Each block is precisely forged and heat-treated to ensure high structural integrity, excellent machinability, and superior mechanical performance.
Key Features:
Material Options:
Carbon Steel: 35#, 45#, C45, etc.
Alloy Steel: 42CrMo, 42CrMo4, 20CrNi2Mo, and other grades upon request.
Dimensions: Customizable sizes and weights according to your machining or final part requirements.
Heat Treatment: Normalizing, tempering, or annealing to achieve desired hardness and toughness.
Surface Condition: Rough forged or rough machined, free of surface cracks and scale, suitable for further machining.
Applications:
These forged steel blocks are widely used as raw materials for key components in construction equipment such as:
Excavator arms and base structures
Crane supports
Hydraulic cylinder blocks
Chassis and frame parts
Drive housings and gearboxes
Advantages:
Excellent strength-to-weight ratio
High impact and fatigue resistance
Enhanced workability for machining
Reliable material traceability and quality control
Compliant with international material standards
Our Competitive Advantages
High Dimensional Accuracy:
All forgings are manufactured with tight dimensional tolerances and precise geometrical control to meet strict engineering requirements.
Superior Mechanical Performance:
Through optimized forging and heat treatment processes, our products exhibit outstanding strength, toughness, and fatigue resistance.
Tailor-Made Dimensions:
We offer customized sizes, weights, and shapes based on your drawings or technical specifications, supporting both small-batch and mass production.
State-of-the-Art Manufacturing & Inspection Equipment:
Equipped with advanced CNC machines, forging presses, and a full range of laboratory testing instruments to ensure consistent quality and process efficiency.
Experienced Technical Team:
Our engineering team brings deep metallurgical knowledge and forging expertise to support product development and technical consultation.
Strict Process Control:
Every stage of production—from raw material selection to final inspection—is carefully monitored under a documented quality system (ISO-certified).
Secure and Protective Packaging:
We ensure all products are properly protected during handling and shipping to prevent damage and ensure safe delivery.
Comprehensive Quality Service:
From pre-sales consultation to after-sales support, we are committed to providing fast response, professional advice, and reliable service.
These are the main inspection equipments:
| Our Lab inspection equipment | |
| 1 | Spectral component analyzer |
| 2 | Impact strength testing machine |
| 3 | Impact test cryogenic tank |
| 4 | Ultrasonic flaw detector |
| 5 | Brinell hardness tester |
| 6 | Rockwell hardness tester |
| 7 | Digital hydraulic universal testing machine |
| 8 | H.Metallurgical microscope |
| 9 | Program-controlled box furnace |
| Material | 4140,4130,18CrNiMo7-6,4340,4330,1.7225,35# 45# 20CrMnTi 20CrNi2Mo 20CrMnMo 18CrNiMo7-6 42CrMo 20CrNo 35CrMo |
| Forging Equipment | 5 TON, 8 TON, 12 TON Hydralic hammer |
| Apply for | Construction Machines |
| Manufacturing Process | Forging+heat treatment+rough machining |
| Forging ratio | ≥3 Ensures fine grain refinement, enhanced tensile strength, and excellent internal soundness for heavy-duty operation |
| Delivery terms | Rough machining(N+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. |
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.