Changzhou Tiangong Forging Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 56000 Tons per year |
| Delivery Time | 30days |
| Packaging Details | Pallet |
| Heat Treatment | QT NT or Customizable |
| Transport Package | Pallet or Customizable |
| Machining | Hydraulic Hammers: 5T, 8T, 12T and more |
| Surface Finish | Smooth or Anti-rust oil |
| Advantages | High strength, excellent fatigue resistance, improved mechanical properties and more |
| Type | Open die forging and free forging |
| Material | Carbon steel alloy steel and Customizable |
| Apply | Petrochemical Pipelines And Marine Engineering |
| Brand Name | Tiangong |
| Model Number | TG-208 |
| Certification | ISO9001, ISO14001,ISO45001 |
| Place of Origin | Changzhou, China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 56000 Tons per year |
| Delivery Time | 30days | Packaging Details | Pallet |
| Heat Treatment | QT NT or Customizable | Transport Package | Pallet or Customizable |
| Machining | Hydraulic Hammers: 5T, 8T, 12T and more | Surface Finish | Smooth or Anti-rust oil |
| Advantages | High strength, excellent fatigue resistance, improved mechanical properties and more | Type | Open die forging and free forging |
| Material | Carbon steel alloy steel and Customizable | Apply | Petrochemical Pipelines And Marine Engineering |
| Brand Name | Tiangong | Model Number | TG-208 |
| Certification | ISO9001, ISO14001,ISO45001 | Place of Origin | Changzhou, China |
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.
| Item | Details |
|---|---|
| Product Name | High Performance Open Die Forging Flanges For Petrochemical Pipelines And Marine Engineering |
| Material Grades | - Alloy steels (20CrMnMo, 30CrNiMo8, 18CrNiMo7-6) offering high strength and corrosion resistance - Carbon steels (35#, 45#) for general industrial flange applications - Custom grades available to meet specific project and environmental requirements |
| Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Open die forging presses capable of handling large-diameter flanges and thick-walled components - Heat treatment furnaces ensuring uniform metallurgical properties throughout the flange |
| Manufacturing Process | Material Verification → Controlled Heating → Open Die Forging → Heat Treatment → Preliminary Blank Inspection → Rough Machining → Non-Destructive Testing (UT/MT) → Finish Machining (if required) → Dimensional & Surface Inspection → Marking & Protective Packaging → Delivery |
| Forging Ratio | ≥ 3.0 — Ensures consistent fiber flow, dense microstructure, excellent fatigue and pressure resistance for high-load pipeline and marine applications |
| Applications | - Flanges for petrochemical and oil & gas pipelines - Marine engineering components for offshore platforms and shipbuilding - High-pressure vessels and piping systems in refineries and chemical plants - Industrial connections requiring leak-proof, durable, and high-strength flanges |
| Delivery Conditions | - Quenched and Tempered for optimal hardness, mechanical strength, and corrosion resistance - Available in normalized, rough-machined, or fully finished condition based on client specifications |
| Testing & Inspection | - Optical Spectrometry to confirm chemical composition - Mechanical Testing: Tensile, Yield, Impact, Hardness - Non-Destructive Testing: UT, MPI for defect-free integrity - Precision dimensional inspection to ensure accurate fit and reliable sealing performance |
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.
Company Details
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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