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China factory - Changzhou Tiangong Forging Co., Ltd.

Changzhou Tiangong Forging Co., Ltd.

  • China,Changzhou ,Jiangsu
  • Verified Supplier

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China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings
China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings

  1. China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings
  2. China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings
  3. China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings
  4. China Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings

Large Diameter Free Forging 42CrMo4 Rough Machined Heavy Steel Forgings

  1. MOQ: 1
  2. Price: USD500-USD1000/piece
  3. Get Latest Price
Payment Terms T/T
Supply Ability 56000 Tons per year
Delivery Time 30days
Packaging Details Pallet
Origin Of Goods Changzhou, Jiangsu
Other Name Free forgings
Industry Forging industry
Forging Weight 100kg|100kg-7ton
Heat Resistance Wear-resistant
Apply For Hydraulic Cylinders
Processing Forging.
Production Method Hot Forging
Precision Accurate
Surface Finish Smooth
Brand Name Tian Gong
Model Number TG-102
Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability 56000 Tons per year
Delivery Time 30days Packaging Details Pallet
Origin Of Goods Changzhou, Jiangsu Other Name Free forgings
Industry Forging industry Forging Weight 100kg|100kg-7ton
Heat Resistance Wear-resistant Apply For Hydraulic Cylinders
Processing Forging. Production Method Hot Forging
Precision Accurate Surface Finish Smooth
Brand Name Tian Gong Model Number TG-102
Certification ISO9001, ISO14001,ISO45001 Place of Origin Changzhou, China
High Light Large Diameter Free forgingFree forging 42CrMo4Machined Heavy Steel Forgings

42CrMo4 Large Diameter Rough Machined Heavy Steel Forgings for Hydraulic Cylinders. Our 42CrMo4 large diameter heavy steel forgings are precision forged to meet the demanding strength and performance requirements of hydraulic cylinder components in heavy-duty industrial applications. Manufactured using high-quality 42CrMo4 alloy steel, these parts offer excellent toughness, wear resistance, and fatigue strength—making them ideal for use in harsh, high-pressure environments.

 

Each forging is rough machined according to customer specifications, with consistent dimensional accuracy and surface integrity. We supply forgings in weights ranging from 100 kg to 7000 kg, suitable for both small batch and bulk production needs.

 

Whether you require a custom forging for OEM use or replacement parts for hydraulic systems, our ISO-certified factory ensures reliable quality and on-time delivery.

Key Features

  • Material: 42CrMo4 alloy steel

  • Forging Process: Open die / free forging

  • Machining: Rough machined only (final machining by customer)

  • Size & Weight Range: Custom sizes, from 100 kg up to 7000 kg

  • Application: Hydraulic cylinders, heavy machinery, mining equipment, press systems

  • Standards: ISO 9001, ISO 14001, ISO 45001 certified

  • Inspection: Ultrasonic testing, chemical and mechanical property testing available

  • Packaging: Steel frames or wooden cases, export-safe

Item Details
Product Name 42CrMo4 Large Diameter Rough Machined Heavy Steel Forgings for Hydraulic Cylinders
Material Grades - Alloy steels tailored for high compressive strength, fatigue resistance, and dimensional stability under rolling loads and temperature fluctuations
Forging Equipment - Hydraulic Hammers: 5T, 8T, 12T- Suitable for open die forging of extra-large diameter components and heavy-section parts
Manufacturing Process Raw material inspection → Unloading → Inspection → Preheating → Forging → Heat Treatment → Inspection → Rough Machining → Non-Destructive Testing → Final Inspection → Packaging → Delivery
Forging Ratio ≥ 3.0 — Improves internal uniformity, grain flow, and durability under high torque and compressive stress during rolling operations
Heat Treatment Options - Normalizing and tempering to refine microstructure, improve dimensional stability, and relieve internal stress
Applications - Backup rolls, work roll shafts, and coupling components in hot/cold strip mills- Support rollers, drive shafts, and rolling mill housing components
Process Compliance - Manufactured based on customer-provided technical drawings and heavy load service requirements
Delivery Conditions - Supplied heat treated and rough machined to allow final processing by OEMs- Custom geometry available for rolling mill integration
Testing & Inspection - Chemical Composition Testing- Mechanical Testing: Strength, Toughness, Hardness- NDT: Ultrasonic Testing (UT), Magnetic Particle Testing (MT)- Dimensional Inspection using precision tools

 

 

Process flow: 

raw material inspection → unloading → inspection → preheating → forging → heat treatment → inspection → rough machining → non-destructive testing → inspection → packaging → delivery.

 

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

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • 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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  • Reach Us
  • Changzhou Tiangong Forging Co., Ltd.
  • Wangxia Village, Luoxi Town, Xuejia Town, Xin Bei District, Changzhou City, Jiangsu Province, China
  • https://www.freeforgings.com/

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