China factories

China factory - Changzhou Tiangong Forging Co., Ltd.

Changzhou Tiangong Forging Co., Ltd.

  • China,Changzhou ,Jiangsu
  • Verified Supplier

Leave a Message

we will call you back quickly!

Submit Requirement
China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox
China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox

  1. China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox
  2. China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox
  3. China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox
  4. China Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox

Closed Die Forged Steel Flanges OEM Open Forging Process For Gearbox

  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
Machining Rough Machining
Forging Weight 100kg-7ton
Material High-strength alloy steel , carbon steel
Dimensions Large-diameter shaft
Custom shaft length 50-6000mm
Quality control Ultrasonic tested (UT) & Mechanical Properties
Steel Grade carbon steel & alloy steel
Application Wind turbines, port cranes, gearboxes, engineering machinery
Driven Type Electric,Hydraulic
Surface Rust-proof Oil
Shipment FOB Shanghai, CFR, CIF etc
Production Process Forging+heat treatment+rough machining
Price Terms FOB(Shanghai) or CIF (assigned port)
Strength High
Brand Name Tiangong
Model Number Tiangong 0065
Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China

View Detail Information

Contact Now Ask for best deal
Get Latest Price Request a quote
  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability 56000 Tons per year
Delivery Time 30days Packaging Details Pallet
Machining Rough Machining Forging Weight 100kg-7ton
Material High-strength alloy steel , carbon steel Dimensions Large-diameter shaft
Custom shaft length 50-6000mm Quality control Ultrasonic tested (UT) & Mechanical Properties
Steel Grade carbon steel & alloy steel Application Wind turbines, port cranes, gearboxes, engineering machinery
Driven Type Electric,Hydraulic Surface Rust-proof Oil
Shipment FOB Shanghai, CFR, CIF etc Production Process Forging+heat treatment+rough machining
Price Terms FOB(Shanghai) or CIF (assigned port) Strength High
Brand Name Tiangong Model Number Tiangong 0065
Certification ISO9001, ISO14001,ISO45001 Place of Origin Changzhou, China
High Light forged steel flanges oemoem open forging processclosed die forged steel flanges

Forged Steel Flange 42CrNiMo / C45 – Gearbox and Crane Components – OEM Available

 

Our Large Size Forged Ring Flanges are manufactured from premium-grade alloy steels such as 18CrNiMo7-6 and 42CrMo, ensuring exceptional strength, wear resistance, and durability. Designed for heavy-duty industrial applications, these forged flanges are ideal for wind turbine gearboxes, marine equipment, port machinery, and large-scale transmission systems. With a gross weight capacity of up to 7 tons, each ring flange undergoes open die forging, followed by precise heat treatment and CNC machining to meet tight tolerance requirements.

 

We support custom dimensions, heat treatment specifications, and machining processes based on customer drawings or technical requirements. With over 25 years of forging expertise, our flanges comply with ISO, GB, and DIN standards, and are ultrasonically tested for internal quality assurance. Trusted by top-tier clients in wind energy and port equipment sectors.

Key Features:

  • Material: 42CrMo, 42CrNiMo, 18CrNiMo7-6, 20CrMnMo, C45, C35

  • Forging Type: Open die / Closed die

  • Weight Range: 100kg – 7000kg

  • Heat Treatment: Normalizing, Quenching + Tempering

  • Machining: Rough / Semi-finished / Precision CNC

  • Standards: Custom / GB / DIN / ANSI

  • Applications: Wind turbines, port cranes, gearboxes, engineering machinery

 

Custom 42CrMo / 42CrNiMo / 18CrNiMo Forged Shafts, drives for Wind Turbine Gearboxes (100–1000KG). We manufacture custom forged shafts and drive components made from premium alloy steels including 42CrMo, 42CrNiMo, and 18CrNiMo, specifically engineered for wind turbine gearbox applications. These forged parts range from 100KG to 1000KG, and can be tailored to meet your exact design and performance requirements.

Main  Forging service Machine list:   sets 
Sample Inspection tester machines in the lab.  
1 Spectrometer  1
2 Impact testing machine  1
3 Tensile testing machine 1
4 Metallographic microscope  1
5 Brinell hardness tester 1
6 Notch projector  1
7 Quenching test machine  1
8 high-precision flaw detector 2
Natural gas equipment 
1 Natural gas furnace 15Ton  6
2 Natural gas furnace 20Ton  1
3 Natural gas furnace 30Ton  3
4 Natural gas furnace 40Ton  1
  Sawing machine  16
5 5 Ton electro-hydraulic forging hammer 1
6 8 Ton electro-hydraulic forging hammer 1
7 12 Ton electro-hydraulic forging hammer 1
operation machine 
8 10 Ton loader machine  1
9 15 Ton loader machine 1
10 20 Ton Loader machine  1
Material carrier machine 
12 10 Ton material carrier  1
13 20 Ton material carrier  1
14 Heat Treatment electric furnace 5Ton 1
15 Heat Treatment electric furnace 15Ton 1
16 Heat Treatment electric furnace 50Ton 1
17 Heat Treatment electric furnace 60Ton 1
18 Heat Treatment electric furnace 60Ton 1
19 horizontal lathe, vertical lathe,CNC vertical lathe,machining equipment 31

 

Material Options:

  • 42CrMo – A high-strength alloy steel with excellent toughness and hardenability, widely used for heavy-duty drive shafts.

  • 42CrNiMo – A nickel-molybdenum alloy steel offering superior impact resistance and stability in harsh, low-temperature environments.

  • 18CrNiMo – A carburizing alloy steel combining high surface wear resistance with strong core toughness, ideal for long-life gear shafts

  •  
  • .


Key Features:

  • Weight range: 100–1000KG

  • Available in various shapes: stepped shafts, spline shafts, solid or hollow structures

  • Forged and heat-treated for enhanced mechanical properties

  • CNC pre-machining or rough machining available upon request

  • 100% Ultrasonic testing and Magnetic Particle Inspection


Applications:

  • Main shafts and input/output shafts in wind turbine gearboxes

  • High-torque drive components in renewable energy systems

  • Custom transmission shafts for planetary and parallel gear reducers

  • Offshore and onshore wind power equipment


Manufacturing Process:

The shafts are produced using open die forging or precision closed die forging, followed by appropriate heat treatment such as quenching & tempering or carburizing. Each part is processed to achieve optimized grain flow and superior fatigue resistance. All products are strictly inspected and can be delivered with pre-machined surfaces to facilitate your final assembly or finish machining.

 

 

 

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.

Why Choose Our Forged Steel Shafts?

25+ Years of Forging Expertise
In-house Quality Control & Testing Lab
ISO9001 / ISO14001 / ISO45001 Certified
Reliable Partner of Top Gearbox Brands (Goldwind, NGC, ZPMC, etc.)
Customized Dimensions & Tolerances Based on Drawings

 

Typical Features of Our Wind Turbine Shafts

  • High torsional strength & fatigue life

  • Optimized grain flow via precision forging

  • Crack-free forging surfaces

  • Enhanced mechanical reliability under extreme loads

  • Full traceability and quality documentation (MTC available)

Frequently Asked Questions (FAQs)

  1. What is the typical weight spectrum of the forged components you manufacture? Our forging capabilities encompass a range of components weighing from 100 kilograms up to 7 metric tons.

  2. Do you handle downstream processing such as thermal treatment and material removal? Indeed, we provide comprehensive in-house services for heat treatment, encompassing both preliminary and final machining operations.

  3. Which industrial sectors are the primary beneficiaries of your forged products? We cater to a diverse array of critical industries, including wind power generation, heavy machinery manufacturing, port infrastructure, power transmission systems, and various others.

  4. What are the typical timeframes for the completion and dispatch of orders? For items readily available in our inventory, the standard lead time is approximately 30 days. For custom-manufactured orders, the timeframe generally spans 40 to 45 days.

  5. Could you provide information on the geographical location of your manufacturing facility and shipping hub? Our production plant is situated in Changzhou City, strategically located near Shanghai, and we utilize the Port of Shanghai for our shipping logistics.

Request a Quotation

To receive a tailored price assessment and a comprehensive engineering solution designed to meet your specific needs, please forward your detailed technical drawings and requirements to our dedicated team. Our experienced engineers will promptly review your submission and provide you with a professional quotation and a suitable solution.

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 ...

+ Read More

Get in touch with us

  • 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/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement