China Free Forging manufacturer
Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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42CrNiMo C45 Forged Steel Flanges Polished Open Forging OEM

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Changzhou Tiangong Forging Co., Ltd.

City: changzhou

Province/State:jiangsu

Country/Region:china

Tel:86--83202589

Contact Person:
Mrs.Kanas Wen
View Contact Details

42CrNiMo C45 Forged Steel Flanges Polished Open Forging OEM

Brand Name Tiangong
Model Number Tiangong 0065
Certification ISO9001, ISO14001,ISO45001
Place of Origin Changzhou, China
Minimum Order Quantity 1
Price USD500-USD1000/piece
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
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
Strength High
Original CHINA
Head Code round
Finish Polished
Features High strength, Corrosion resistance, Durable, Easy to install, Precise dimensions
Pressure Grade Class 150/300/600/900/1500/2500
Face Type Raised Face, Flat Face, Ring Type Joint
Size 1/2"-24"
Keywords Class 150 RF A105 Blind Flanges
Thickness standard schedule
Standard ASME B16.5, ASME B16.47, MSS SP-44, API, DIN, JIS, BS, etc.
Detailed Product Description

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

 

ur Large Size Forged Ring Flanges are manufactured from high-performance alloy steels such as 18CrNiMo7-6 and 42CrMo, ensuring exceptional strength, fatigue resistance, and toughness under extreme working conditions. With a gross weight range from 100kg up to 7000kg, these forged flanges are ideal for wind turbine gearboxes, large-scale industrial gear transmission, marine propulsion systems, and port handling equipment.

Each flange is produced using open die forging techniques, followed by controlled heat treatment (normalizing, quenching, tempering) and precision CNC machining. We offer OEM and custom production according to customer drawings and mechanical specifications.

All products are ultrasonically tested (UT) and comply with international standards such as DIN, GB, and ISO9001. Our flanges are trusted by global leaders in the renewable energy, port machinery, and heavy equipment manufacturing industries.

 

 

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.  
1Spectrometer 1
2Impact testing machine 1
3Tensile testing machine1
4Metallographic microscope 1
5Brinell hardness tester1
6Notch projector 1
7Quenching test machine 1
8high-precision flaw detector2
Natural gas equipment 
1Natural gas furnace 15Ton 6
2Natural gas furnace 20Ton 1
3Natural gas furnace 30Ton 3
4Natural gas furnace 40Ton 1
 Sawing machine 16
55 Ton electro-hydraulic forging hammer1
68 Ton electro-hydraulic forging hammer1
712 Ton electro-hydraulic forging hammer1
operation machine 
810 Ton loader machine 1
915 Ton loader machine1
1020 Ton Loader machine 1
Material carrier machine 
1210 Ton material carrier 1
1320 Ton material carrier 1
14Heat Treatment electric furnace 5Ton1
15Heat Treatment electric furnace 15Ton1
16Heat Treatment electric furnace 50Ton1
17Heat Treatment electric furnace 60Ton1
18Heat Treatment electric furnace 60Ton1
19horizontal lathe, vertical lathe,CNC vertical lathe,machining equipment31

 

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.

Product Tags: c45 forged steel flanges   polished open forging   forged steel flanges polished  
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