42CrMo Open Die Forgings Heat Treated Open Die Hammer Forging Customizable

42CrMo Heat Treated Open Die Forgings are high-strength components manufactured for critical oil and gas drilling applications. Utilizing 42CrMo alloy steel , these forgings undergo precision open die forging followed by Normalizing and Tempered heat treatment. This process ensures exceptional fatigue resistance, toughness, and structural reliability in extreme downhole environments, including high pressure, corrosive fluids, and cyclic stresses.

Key Characteristics

1. Ultra-High Strength & Toughness

   • Normalizing + Tempering to enhance toughness, stabilize structure, and ensure dimensional consistency under hydraulic pressure

2. Superior Fatigue Resistance

   • Optimized microstructure withstands stress cycles in vibrating drill strings.

3. Critical Fracture Toughness

   • Prevents catastrophic crack propagation in sour gas (H₂S) environments.

4. Stress-Corrosion Cracking (SCC) Resistance

   • Tempering reduces susceptibility to sulfide stress cracking.

5. Directional Grain Flow

   • Open die forging aligns grain structure with part contours, enhancing load-bearing capacity.

Primary Applications in Oil & Gas Drilling

• Drill Collars: Heavy weighted bars below drill pipes for directional control.

• Tool Joints: High-stress connections between drill pipe segments.

• Mud Motor Components: Rotors, driveshafts, and housings for downhole drilling motors.

• BOP (Blowout Preventer) Parts: Rams, stems, and bonnets requiring fracture resistance.

• Heavyweight Drill Pipes: Transition pipes between drill collars and standard pipes.

Frequently Asked Questions (FAQs)

1. What is the typical weight scope for the forged components you manufacture? Our forging capabilities cover a spectrum from 100 kilograms up to 7 metric tons.

2. Do your services extend beyond forging to include thermal processing and material shaping? Affirmative. We provide comprehensive in-house heat treatment services, along with both preliminary and final machining operations.

3. What are the primary industrial sectors that you serve with your products? Our clientele spans various key industries, including wind power generation, heavy construction equipment, port infrastructure, power transmission systems, and numerous others.

4. What are your standard timelines for order fulfillment? For items currently in our inventory, the typical lead time is approximately 30 days. For custom-produced orders, the timeframe is generally 40 to 45 days.

5. Could you specify the geographical location of your production facility? Our factory is situated in Changzhou City, which is conveniently located near Shanghai, and we utilize the shipping facilities at the Port of Shanghai.

Request a Quotation

To receive a tailored proposal and engineering assessment, we invite you to submit your detailed technical drawings and specific requirements. Our engineering team will promptly review your submission and provide you with a professional quotation and tailored solution.

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 our customers’ requirements. 

Our customers and partner value our products and services for 2 reasons: excellence and reliability.

Key figures 

A. Over 30 years professional free forging manufacturing experience

B. The company covers an area of 71,000 square meters

C. The construction area of the production workshop is 12,000 square meters

D. Total number of employees of 158

E. 28 engineering and technical personnel 

F. 59 skilled workers 

G. Annual production capacity is 38,000 tons

H. Steel throughput can reach 56,000 tons

Efficient and reliable solutions for customers

Industrial sector application

We design and manufacture forged parts for all industrial areas applying our experience and unique professionalism and taking the specific requirements of the markets into account. This has led us to become a forging industry leader in all industrial segments and collaborating with leading companies.

A. Wind power generation

B. Port Heavy Machinery

C. Mining

D. Ship Building

E. Chemical industrial

F. Oil industrial

G. Metallurgical industry 

H. Hydraulic industry 

I. Other high-end industrial equipment, gearbox body, parts and etc.

Customized solutions 

Modular processes allow us to engineer a solution for almost every industrial application requiring free forged parts. Our modularity means flexibility, a wide range of options, faster delivery, and most important of all, competitiveness.

All our products and production process have been designed to assure excellent, reliable and long lasting unique mechanical performances, resulting in reduced operating costs and long life.

With a wide range of products and a significant experience gained in most industrial applications, we can also provide complete engineering recommendation for customers.