Changzhou Tiangong Forging Co., Ltd.
Changzhou Tiangong Forging Co., Ltd.
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Large Size Alloy Steel Forged Cylinder – Heat Treated and Machined to Drawing
Our Solid Forged Cylinders are manufactured from high-strength alloy steels such as C45 and 42CrNiMo, making them ideal for pressure vessels, marine shafts, and heavy-duty industrial applications. Produced using open die forging techniques, these cylinders feature excellent internal soundness, fatigue resistance, and uniform grain flow, ensuring long service life in demanding environments.
Available in weights from 100kg to 7000kg, each forged cylinder can be supplied in rough turned or CNC precision machined condition, with full heat treatment options including normalizing, quenching, and tempering. All products undergo ultrasonic testing (UT) and comply with international standards such as ISO 9001, GB/T, and DIN.
We offer OEM customization services based on client drawings and specifications, serving customers in the shipbuilding, offshore energy, petrochemical, and heavy machinery industries.
| 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 |
Available Shapes:
Cylindrical forgings: solid round bars or hollow cylinders
Forged shafts: straight, stepped, or spline shafts
Gear blanks: round discs with or without hubs, pre-machined or rough
Block forgings: rectangular, square, or custom-shaped blocks for heavy-duty applications
Material Grades (examples):
42CrMo / 42CrNiMo / 18CrNiMo7-6 – high-strength alloy steels for mechanical parts
20CrMnTi – carburizing and quenching steels for gears
Key Features:
Custom forging weight range: 100 KG to 7000 KG
Superior mechanical properties after heat treatment
Uniform internal structure, no porosity or segregation
100% ultrasonic tested, with optional third-party inspection
CNC pre-machining and surface treatment available upon request
Applications:
Wind power equipment (shafts, gear blanks)
Heavy machinery and transmission systems
Mining, port, and oilfield equipment
Power generation and shipbuilding industries
Hydraulic systems and pressure equipment
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.
Frequently Asked Questions (FAQs)
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.
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.
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.
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.
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.