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 |
| Size | Customized |
| Material | 42CrMo4, 20CrMnTi or Customized |
| Weight | 100 KG-7 TON |
| Type | Free Forging |
| Application | Continuous Casting and Steel Mill Equipment |
| Packing | Pallet or Customized |
| Shape | Customizable |
| Durability | Long time |
| 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 | Size | Customized |
| Material | 42CrMo4, 20CrMnTi or Customized | Weight | 100 KG-7 TON |
| Type | Free Forging | Application | Continuous Casting and Steel Mill Equipment |
| Packing | Pallet or Customized | Shape | Customizable |
| Durability | Long time | Brand Name | Tian Gong |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
| High Light | free forged 20crmnti ，20crmnti roller shaft ，continuous casting free forged | ||
Free Forged Roller Shaft for Continuous Casting and Steel Mill Equipment. Our free forged roller shafts are purpose-built to endure the extreme mechanical and thermal stresses found in continuous casting lines, hot rolling mills, and other steel processing equipment. Manufactured using high-strength alloy and carbon steels, each shaft is precision-forged to ensure superior fatigue resistance, dimensional accuracy, and long operational life under heavy loads and cyclic conditions.
Key Features:
Material Options: 42CrMo, 45#, and other custom alloy steels offering excellent toughness, hardenability, and thermal fatigue resistance.
Forging Method: Open-die forging (free forging) for dense, refined grain structure and defect-free integrity, especially critical in high-load roller applications.
Size Capabilities: Large-diameter, extra-long shafts suitable for various roller configurations—work rolls, support rolls, intermediate rolls, and pinch rolls.
Applications:
Roller shafts for continuous casting machines
Support and drive rolls in hot and cold rolling mills
Roller components in reheating furnaces and billet handling systems
| Item | Details |
|---|---|
| Product Name | Free Forged Roller Shaft for Continuous Casting and Steel Mill Equipment |
| Material Grades | - Alloy steels: 42CrMo - Carbon steels: 45# - Excellent tensile strength, fatigue resistance, and thermal stability for high-load and high-temperature operations in rolling mills |
| Forging Equipment | - Hydraulic hammers: 5T / 8T / 12T - 3600T open-die forging press for long, large-diameter roller shaft forgings - Capable of forming stepped shafts with journals, necks, and custom drive end profiles |
| Manufacturing Process | Hot Forging → Heat Treatment (Quenching + Tempering / Normalizing) → Ultrasonic Testing → Rough / Semi-Finish Machining → Final Dimensional & Surface Inspection |
| Forging Ratio | ≥ 3.0 — Ensures directional grain flow along the shaft axis for improved impact toughness, torsional strength, and long-term reliability under cyclic rolling loads |
| Applications | - Roller shafts in continuous casting machines and billet handling systems - Work rolls, backup rolls, and intermediate rolls in hot and cold strip rolling mills - Roller components for steel processing, reheat furnaces, and coil transport equipment |
| Heat Treatment Options | - Quenched + Tempered for enhanced strength, hardness, and wear resistance in dynamic rolling environments - Normalizing for uniform microstructure and improved machinability - Optional stress-relief annealing to reduce residual stress prior to finish machining |
| Testing & Inspection | - Chemical: Alloy verification by spectrometer - Mechanical: Tensile strength, yield strength, hardness, and Charpy impact tests (longitudinal & transverse) - Ultrasonic Testing (UT): 100% internal flaw detection along the shaft length - Dimensional: Concentricity, straightness, diameter tolerance, and surface finish control |
| Value-Added Services | - Pre-machining of journals, keyways, shoulders, and coupling interfaces - Complete material traceability: heat number, batch number, mechanical and NDT reports (MTC) |
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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