High Performance Open Die Forging Flanges For Petrochemical Pipelines And Marine Engineering

High Performance Open Die Forging Flanges for Petrochemical Pipelines and Marine Engineering

Our open die forging flanges are designed to deliver exceptional strength, durability, and sealing reliability in demanding industrial environments. Manufactured from high-grade alloy and carbon steels, these flanges are forged under controlled processes to ensure a dense internal structure, uniform grain flow, and excellent resistance to pressure and corrosion.

Product Features:

• Precision open die forging ensures high structural integrity and long service life

• Superior resistance to stress, impact, and fatigue under continuous operation

• Available in a wide range of sizes, pressure classes, and material grades to meet customer-specific requirements

• Strict inspection and testing, including UT, MPI, tensile and hardness testing, to guarantee performance and safety

Application Fields:

• Petrochemical pipelines and refinery systems requiring leak-proof and high-strength connections

• Offshore and marine engineering projects exposed to harsh environments and high loads

• Shipbuilding, power generation, and heavy industrial equipment connections

• Critical joint applications where reliability and safety are paramount

With proven forging expertise and strict quality control, our flanges provide dependable performance in the world’s toughest working conditions.

Simplified Steel Forging Process

Material inspection and verification → Cutting to size → Controlled and uniform preheating → Open die forging with subsequent heat treatment → Initial inspection of forged blanks → Rough machining to approximate dimensions → Non-destructive testing (UT/MT) and hardness evaluation → Quenching and tempering to achieve desired mechanical properties → Detailed final inspection → Precision finishing as required → Component marking, identification, and protective packaging → Storage and shipment to client

Frequently Asked Questions (FAQs)

What weight range do your forged parts cover?
Our forgings are available from around 100 kg up to 7,000 kg, suitable for both mid-sized industrial projects and large-scale heavy-duty applications.

Do you provide heat treatment and machining services?
Yes. We offer comprehensive in-house heat treatment, and parts can be supplied either in rough-machined form or fully finished according to client specifications.

Which industries commonly use your forged components?
Our products serve multiple sectors including wind energy, mining and construction machinery, port and cargo handling equipment, marine engineering, and high-load power transmission systems.

What is the usual lead time for production?

• Stock items: Approximately 30 days

• Customized orders: Typically 40–45 days, depending on material selection and machining requirements

Where is your manufacturing facility located?
We are based in Changzhou, Jiangsu Province, close to Shanghai. All exports are handled efficiently via Shanghai Port.

Request a Quote
Please share your technical drawings and detailed specifications. Our engineering team will review your requirements promptly and provide a professional quotation along with tailored forging solutions.

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.