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 | 42CrMo4, 20CrMnTi or Customized |
| Weight | 100 KG-7 TON |
| Type | Free Forging |
| Application | Output shafts in industrial gear reducers, rolling mills, cement drives, and mixers - Main drive shafts for mining conveyors and metallurgical processing units - Rotational components operating under high torque and cyclical loads |
| Oem/Odm | Available |
| Surface Finish | Removal of oxide scale or Customized |
| Lead Time | Negotiable |
| 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 | 42CrMo4, 20CrMnTi or Customized |
| Weight | 100 KG-7 TON | Type | Free Forging |
| Application | Output shafts in industrial gear reducers, rolling mills, cement drives, and mixers - Main drive shafts for mining conveyors and metallurgical processing units - Rotational components operating under high torque and cyclical loads | Oem/Odm | Available |
| Surface Finish | Removal of oxide scale or Customized | Lead Time | Negotiable |
| Brand Name | Tian Gong | Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China | ||
| High Light | stacker systems free forging ，port free forged ，port free forging | ||
Forged Trolley Wheel Free Forging for Heavy-Duty Port Crane and Stacker. Systems is a high-strength forged component engineered for repetitive load-bearing and rolling operations in harsh port and industrial environments. Manufactured from premium alloy or carbon steel grades such as 42CrMo4, these wheels are designed for exceptional surface hardness, impact resistance, and fatigue life—ideal for cranes operating under frequent start-stop cycles and lateral stress.
With precision open-die forging and heat treatment processes, each wheel achieves uniform grain structure and dimensional integrity. Forged profiles can include integrated flanges, bores, and customized tread geometries to meet the operational demands of gantry cranes, bridge cranes, RTGs, container stackers, and rail-guided systems.
Key Features:
Superior fiber grain flow and dense internal structure for enhanced durability
High surface hardness with a tough core for long service life under heavy loads
Capable of integral forging of flanges, hubs, and bore sections to ensure concentricity
Supports various heat treatment options such as normalizing, quenching & tempering, and surface hardening
Common Types:
Flanged forged wheels for guided rail operations (e.g., RTG and gantry cranes)
Non-flanged wheels for unguided rolling systems
Solid or hollow designs, depending on load and weight optimization needs
| Item | Details |
|---|---|
| Product Name | Forged Trolley Wheel Free Forging for Heavy-Duty Port Crane and Stacker Systems |
| Material Grades | - High-strength alloy steels: 42CrMo4 - Carbon steels: 45#- Excellent wear resistance, surface hardness, and impact toughness for repetitive rolling in port environments |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T- 3600T open-die forging press for large-diameter solid and hubbed wheel forgings- Supports integral forging of wheel tread, flange, and bore |
| Manufacturing Process | Hot Forging → Normalizing / Quenching + Tempering → Ultrasonic Testing → Rough / Semi-Finish Machining → Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Promotes directional grain flow for enhanced fatigue strength and structural integrity under cyclic rolling loads |
| Applications | - Trolley wheels for port gantry cranes, RTGs, and ship-to-shore cranes- Travel wheels for container stackers, yard trolleys, and industrial transfer carts- Suitable for rail-mounted and rubber-tyred crane systems |
| Heat Treatment Options | - Quenched + Tempered for high hardness and core toughness- Normalizing for grain refinement and dimensional control- Optional stress relieving before finish machining |
| Testing & Inspection | - Chemical: Spectrometer-controlled alloy analysis- Mechanical: Hardness, tensile, yield strength, impact testing (longitudinal & transverse)- Ultrasonic (UT): 100% flaw detection across wheel volume- Dimensional: Tread concentricity, flange thickness, bore tolerance, roundness |
| Value-Added Services | - Pre-machining: flange surfaces, bores, keyways, and tread profiles- - Full material traceability: heat number, forging batch, inspection certification |
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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