Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Surface Treatment | Heat Treatment，Removal of oxide scale or Customized |
| Material | Alloy Steel or Customized |
| Weight | 100 KG-7 TON |
| Type | Free Forging |
| Application | Gantry cranes and container stackers at ports and shipyards - Bridge cranes, RTGs, and industrial transfer carts - Rail-mounted and rubber-tyred crane systems |
| Processing Method | Customized |
| Packing | Pallet or Customized |
| Precision | High |
| Brand Name | Tian Gong |
| 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 | Heat Treatment，Removal of oxide scale or Customized | Material | Alloy Steel or Customized |
| Weight | 100 KG-7 TON | Type | Free Forging |
| Application | Gantry cranes and container stackers at ports and shipyards - Bridge cranes, RTGs, and industrial transfer carts - Rail-mounted and rubber-tyred crane systems | Processing Method | Customized |
| Packing | Pallet or Customized | Precision | High |
| Brand Name | Tian Gong | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | Heavy Duty Free forging ，Free forging for Port ，Gantry Crane Wheel 7 TON | ||
Heavy-Duty Gantry Crane Wheel Free Forging for Port and Industrial Crane Applications.The Heavy-Duty Gantry Crane Wheel Free Forging is a precision-engineered forged component designed to support the high loads and continuous rolling conditions in port cranes, shipyard gantries, and heavy industrial lifting systems. It serves as a critical wheel unit that ensures smooth, reliable movement of crane bridges and trolleys under extreme working environments.
Manufactured from high-strength alloy steels such as 42CrMo4, these wheels feature exceptional wear resistance, impact toughness, and load-bearing capacity. The free forging process ensures refined internal grain flow and structural integrity, minimizing internal defects and improving fatigue performance.
Key Features:
One-piece free forging for enhanced durability and structural consistency
Optional heat treatments (Q+T or normalizing) for surface hardness and core ductility
Machined treads, flanges, and bores with strict dimensional tolerances
Custom profiles for double-flanged, single-flanged, and flat-wheel designs
Applications:
Port gantry cranes, container terminals, shipyard bridge cranes
Rail-mounted stacking cranes, rubber-tyred gantry systems (RTGs)
Heavy industrial overhead cranes and transfer carts
| Item | Details |
|---|---|
| Product Name | Heavy-Duty Gantry Crane Wheel Free Forging for Port and Industrial Crane Applications |
| Material Grades | - High-strength steels: 42CrMo4 - Excellent wear resistance, surface hardness, and load-bearing performance in repetitive rolling operations |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press capable of producing large-diameter, solid or hubbed wheel forgings - Supports integrated tread and flange profiles |
| Manufacturing Process | Hot Forging → Normalizing / Quenching + Tempering → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Promotes directional grain orientation for improved fatigue resistance and impact absorption in high-cycle crane operation |
| Applications | - Gantry cranes and container stackers at ports and shipyards - Bridge cranes, RTGs, and industrial transfer carts - Rail-mounted and rubber-tyred crane systems |
| Heat Treatment Options | - Quenched + Tempered for core strength and surface hardness - Normalizing for uniform grain refinement - Optional stress relief before finish machining |
| Testing & Inspection | - Chemical: Alloy verification via spectrometer analysis - Mechanical: Hardness, tensile strength, yield, impact resistance (transverse & axial) - Ultrasonic (UT): Full-body flaw scanning - Dimensional: Tread concentricity, flange thickness, bore alignment |
| Value-Added Services | - Pre-machining of flanges, bores, keyways, or custom tread profiles - Full traceability with heat number, forging batch, and inspection reports |
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.
Packaging & Delivery
Rust-preventive coating
Heavy-duty seaworthy wooden boxes
Custom labeling and barcoding
Global shipping support with flexible delivery terms (FOB, CIF, EXW)
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.
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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