Forged Forging Cylinder | China Custom Manufacturer | Jiangsu Liangyi

Custom Forged Forging Cylinder - Heavy Duty Forged Steel Cylinder from China Manufacturer Jiangsu Liangyi

Premium Forged Forging Cylinder Overview

Established in 1997, Jiangsu Liangyi Co., Limited is a professional ISO 9001:2015 certified open die forging manufacturer. With over 25 years of industry experience. We specialize in producing high-performance forged forging cylinders for industrial clients.

Our products include custom heavy wall hollow forged cylinders, blind holes forged cylinders, forged steel hydraulic cylinders, and seamless forged cylinder sleeves. We make products with weight ranges from 30kg to 30 tons and have an annual production capacity of 120,000 tons.

Our forged cylinders are exported to more than 50 countries across Europe, North America, the Middle East, Asia-Pacific, and Australia. They are recognized for excellent durability, great strength, and reliable corrosion resistance in high-stress applications and harsh working environments.

Custom Forged Cylinder Manufacturing Capabilities

We support a full range of service for forged forging cylinders from steel melting, open die forging, heat treatment to precision CNC machining. All products are produced in accordance with international standards including API 6A, ISO 9001, NACE MR0175, ASTM, ASME, DIN, EN, JIS, DNV, and PED 2014/68/EU.

Carbon & Alloy Steel Forged Cylinders

For carbon and alloy steel forged cylinders, our production capacity covers:

This series is used in hydraulic machinery, construction equipment, and general industrial applications. It fully meets ASTM, ASME, and DIN standards for the European and North American markets.

Stainless Steel, Nickel & Super Alloy Forging Cylinders

For stainless steel, duplex stainless steel, super duplex stainless steel, nickel-based, and super alloy forging cylinders, our production capacity covers:

This series is used for extreme corrosion, high-temperature, and high-pressure conditions in the oil and gas, petrochemical, marine, and power generation industries. It meets API 6A, NACE MR0175, and DNV standards of the Middle East, offshore, and global marine markets.

Why Choose Our Forged Forging Cylinders

Full In-House Production Chain

We control the entire production process from steel melting (30t EAF+LF+VD/VOD) to forging (2000T-6300T hydraulic press), 10 heat treatment furnaces, precision CNC machining, and full inspection. This makes sure every forged cylinder is traceable and strictly controlled in quality.

Guaranteed Forging Ratio ≥4:1

Every piece of our forged forging cylinder has a forging ratio of no less than 4:1. This effectively breaks down the cast matrix, deletes internal porosity and shrinkage defects, so that every part has a consistent and dense matrix, and its fatigue resistance is improved by over 40% compared to seamless pipes.

Customized Heat Treatment Solutions

We provide professional customized heat treatment services, including quenching and tempering, solution treatment, and aging heat treatment. This improves the mechanical properties (tensile strength, yield strength, impact toughness, hardness) of the forged cylinder for your specific working conditions.

Comprehensive Full-Item Inspection

We have advanced nondestructive testing, chemical composition testing, mechanical property testing, and metallographical testing equipment. We provide full-range inspection services for every forged cylinder, with complete Mill Test Certificate (MTC) EN 10204 3.1/3.2 available.

Material Grades For Forged Forging Cylinders

We make forged forging cylinders in a full range of domestic and international standard steel grades. We also support custom material formulation according to your specific application requirements. All materials meet full traceability and chemical composition test reports.

Carbon & Alloy Steel Grades

They all meet ASTM, ASME, DIN, EN standards for EU and North American general industrial markets:

Stainless Steel, Nickel & Super Alloy Grades

They all meet API 6A, NACE MR0175, DNV standards for Middle East, offshore, and global corrosion-resistant markets:

Our Certification & Applicable Standards

Jiangsu Liangyi holds ISO 9001:2015 certification. Our forged forging cylinders are produced in accordance with the requirements of the following international standards, enabling them to be legally imported and used in all major global markets.

Our Certification

ISO 9001:2015

Standards Our Products Are Produced to Meet

API 6A
ASME BPVC
NACE MR0175
PED 2014/68/EU
DNV
ASTM / ASME
DIN / EN / JIS

Rigorous Manufacturing Process & Quality Control

We have a strict full-process quality control system for every forged forging cylinder, from raw material incoming inspection to final shipment. This makes sure that every product meets your design requirements and international standards.

Standard Melting & Heat Treatment Process

Following are our standard melting process for forged cylinders:

This process effectively reduces the content of harmful impurities and gases in the steel and improves material purity, which makes sure the material mechanical properties are stable.

We also provide customized heat treatment solutions, including quenching and tempering, solution treatment, and aging heat treatment, to improve the microstructure and mechanical properties of the forged cylinder for your specific working conditions.

Forged Cylinder Manufacturing Process - Open Die Forging, Heat Treatment and CNC Machining

Full-Process Forging Quality Control Flow

  1. Raw Material Incoming Inspection: Buy the steel ingot with full traceability documents, and we will test the chemical composition of each part.
  2. Ingot Cutting & Pre-Heating: Make the ingot into the shape based on product size, and then heat it in a natural gas heating furnace with real-time temperature monitoring.
  3. Precision Open Die Forging: Forge the ingot by 2000T-6300T hydraulic forging press with a forging ratio ≥4:1.
  4. Post-Forging Heat Treatment: Normalize or anneal heat treatment the ingot to delete internal stress and refine grain size.
  5. Rough Machining & Preliminary Inspection: use the drawing to do rough machining , and then do preliminary nondestructive testing (UT, MT), dimensional check, and hardness test.
  6. Final Heat Treatment: Apply quenching and tempering, solution treatment or aging heat treatment according to the material and performance requirements.
  7. Performance Testing & Full Inspection: Apply mechanical properties test, 100% nondestructive testing, hardness test, grain size inspection, and full dimension test.
  8. Finish CNC Machining: Fine CNC machining according to the final drawing, to get the required dimensional tolerance and surface finish.
  9. Final Inspection & Shipment Preparation:Check final dimension and surface ,mark permanent steel stamp, package anti-rust,and prepare MTC document

Global Industry Applications & Regional Case Studies

Our forged forging cylinders are used in important industrial sectors across more than 50 countries. We have many project experience in the following main markets, and have provided customized solutions for regional industrial needs and standard requirements.

Oil & Gas Industry (Middle East & North America)

Our forged cylinders are main pressure-bearing parts for wellhead equipment, Christmas trees, hydraulic control systems, and downhole tools in onshore and offshore oilfields.

Regional Case Study: We supplied heavy wall hollow forged cylinders made of ASTM A694 F60, AISI 4130 and 4140 alloy steel for a large-scale sour gas field project in Saudi Arabia. The products fully met API 6A and NACE MR0175 standards, effectively solving the customer's pain point of short lifetime in high-pressure sour gas environments. The lifetime is increased by more than 32% compared with their previous supplier.

Power Generation Industry (Asia-Pacific & Europe)

We supply precision forged cylinders for steam turbines, hydro turbines, generator auxiliary systems, and boiler pressure parts in thermal power, hydro power, and combined cycle power plants.

Regional Case Study: We supplied ASTM A182 F11, F22 and F91 alloy steel forged cylinders for 14 thermal power plant projects in Thailand and Vietnam. The products have excellent high-temperature creep resistance after strict quenching and tempering heat treatment.They have been working stably for more than 9 years.

Hydraulic Machinery Industry (EU & North America)

Our forged steel hydraulic cylinders are used for heavy-duty hydraulic systems for construction machinery, metallurgical equipment, hydraulic presses, and injection molding machines.

Regional Case Study: We supplied custom blind hole forged cylinders made of 42CrMo4, AISI 4140 and St52-3 steel for a well-known hydraulic machinery manufacturer in Germany. The products were made with seamless forging technology, and they had consistent internal distribution and high dimensional precision. The annual supply volume exceeds 2,200 pieces.

Mining Industry (Australia & South America)

Our heavy-duty forged cylinders are used in mining mill equipment, hydraulic roof supports, mineral processing machinery, and mining transport vehicles.

Regional Case Study: We supplied high-strength alloy steel forged cylinders for a large iron ore project in Western Australia. The products were made with a forging ratio ≥4:1, and they had excellent wear resistance and impact load resistance in dusty, high-vibration mining environments. All products passed UT inspection and full mechanical property testing.

Marine & Petrochemical Industry (Global Offshore)

We produce rust-proof forged cylinders for marine hydraulic systems, offshore platform equipment, petrochemical reactors, high-pressure pipeline systems, and LNG terminal equipment.

Regional Case Study: We made forged cylinders from duplex stainless steel, 904L, and Inconel® superalloys for an offshore platform project in the North Sea. The products deliver excellent resistance to seawater and chemical corrosion, fully meeting DNV and NACE standards.

Easy Customization Process

We can customize forged forging cylinder based on clients requirements.

  1. Inquiry Submission: Send us your drawing, material requirement, quantity, and application details.
  2. Technical Review: Our engineering team will review your requirements and provide technical suggestions if needed.
  3. Quotation & Proposal: We will provide a detailed quotation and production proposal within 24 hours.
  4. Order Confirmation: Check the order and sign the sales contract.
  5. Production & Inspection: Start production and apply full inspection according to the contract.
  6. Packaging & Shipping: Package the products and arrange shipping according to clients requirements.
  7. After-Sales Support: Provide after-sales support and technical assistance.

Professional Packaging & Shipping

We provide professional packaging and shipping services to make sure your forged forging cylinder arrives in perfect condition:

Comprehensive Warranty & After-Sales Service

We fully assure the quality of our forged forging cylinders:

Frequently Asked Questions (FAQs)

Forged cylinder is produced by open die forging process with a forging ratio ≥4:1, which breaks down the cast matrix, deletes internal defects, and gets higher tensile strength, yield strength, fatigue resistance, and impact toughness. Seamless pipe is produced by hot rolling or cold drawing, and it is the best choice material for low-pressure general fluid transportation, while forged cylinder is the best choice material for high-stress, high-pressure, heavy load applications in harsh environments.

For carbon and alloy steel forged cylinders: the max outer diameter is 3000mm, max length is 8000mm, max weight is 30 tons. For stainless steel, nickel, and super alloy forging cylinders: the max outer is diameter 1500mm, max length is 6000mm. Custom sizes are also available according to clients drawings.

Our forged forging cylinders are produced in accordance with all of the most important international standards, such as ASTM, ASME, DIN, EN, JIS, API 6A, NACE MR0175, DNV, and PED 2014/68/EU. We can also make custom forged forging cylinders that meet your technical standards.

We provide full-range inspection services, such as chemical composition test, mechanical properties test (tensile strength, yield strength, elongation, impact value, hardness), nondestructive testing (UT, MT, PT, RT), full dimension test, grain size inspection, and metallographic analysis. Third-party inspection (e.g., BV, SGS, TÜV) are available per request.

The minimum order quantity (MOQ) is one piece for normal materials and small sizes. It is possible to negotiate the MOQ for custom materials and big sizes.

Yes, we provide sample testing services. We can produce small test pieces from the same material batch and heat treatment process as your formal order, and provide full inspection reports for your quality verification.

Standard lead time is 20-35 days. Actual lead time depends on clients drawings,material grade, quantity and heat treatment requirements. And we can speed up production for urgent orders .

Yes, we provide a full-process services from forging, heat treatment to precision CNC machining. We can produce finished parts with blind holes, through holes, threads, grooves, and other special structures according to your detailed drawings, ready for direct assembly.

Contact Us For a Custom Quotation

Jiangsu Liangyi is dedicated to providing high-quality custom forged forging cylinder solutions with competitive factory-direct prices for clients around the world. We support full customization according to your drawings, material requirements, and technical specifications. Welcome to send your inquiry details to get a detailed quotation within 24 hours!