Jiangsu Liangyi
Forged Steel Valve Balls Manufacturer in China

Custom Forged Steel Valve Balls for Critical Industrial Valve Service

Jiangsu Liangyi Co., Limited is a professional China manufacturer and supplier of forged steel valve balls for floating, trunnion mounted, 3-way, V-port, segmented, hollow, cryogenic and sour service ball valves. 

This page summaries informtion about our company and products so that buyers, engineers and procurement teams can find mian information faster.

25+ years of forging experience
NPS 1/2 in. to 60 in. production range
ANSI 150 lbs to 2500 lbs pressure classes
Carbon steel to nickel alloy and titanium

Product Overview of Forged Steel Valve Balls

Jiangsu Liangyi Co., Limited, established in 1997, is an ISO 9001:2015, API 6A and PED certified professional manufacturer and global supplier of high-precision forged steel valve balls. With more than 25 years of open die forging experience, an 80,000 ㎡ factory area, 120,000 tons annual forging capacity and advanced 6000-ton hydraulic forging presses, we provide full-process manufacturing from premium steel melting, precision forging, controlled heat treatment, CNC machining and professional surface coating to final inspection for custom forged valve balls.

Our forged steel valve balls are used for extreme industrial environments, including high pressure up to 2500Lbs, high temperature up to 650℃, cryogenic service down to -196℃, corrosive sour service compliant with NACE MR0175 and abrasive slurry environments. We supply forged steel valve balls for floating ball valves, trunnion mounted ball valves, 3-way L-port and T-port ball valves, V-port and segmented control valves, hollow ball valves and cryogenic ball valves, exported to more than 50 countries across North America, Europe, the Middle East, Asia Pacific, Australia, South America and the Commonwealth of Independent States.

Manufacturer positioningChina-based forged steel valve ball manufacturer serving global valve and project markets.
Buyer focusUseful for procurement teams, technical buyers, valve OEMs, EPC contractors and plant engineers.
Production logicFull in-house process control supports better traceability, quality consistency and lead time management.
Application coverageOil & gas, power generation, petrochemical, marine, mining, desalination and water treatment.

What Is a Forged Steel Valve Ball?

A forged steel valve ball is the mian sealing and flow-control part used inside a ball valve. It is produced from forged metal stock rather than cast metal, then machined, ground and polished to meet dimensional accuracy, sphericity and sealing requirements. For extreme industrial conditions,, forged valve balls are selected because forging can improve internal density, grain flow and mechanical reliability compared with cast alternatives.

What buyers usually compareType, metallurgy, pressure class, precision, surface finish, hardening, NDT scope and documentation package.
What makes this page usefulIt combines product overview, material grades, process route, testing capability and industry use cases on one URL.

Quick Answer: What Should Buyers Confirm Before Sourcing Forged Steel Valve Balls?

For RFQ efficiency and specification accuracy, buyers should confirm product type, valve design, operating medium, temperature, pressure class, corrosion and abrasion risk, material grade, required surface treatment, testing scope and certification requirements before ordering forged steel valve balls.

1. Valve ball typeFloating, trunnion mounted, 3-way, V-port, segmented, hollow, cryogenic or custom geometry according to valve structure.
2. Service conditionsPressure, temperature, medium composition, H2S / CO2 risk, slurry abrasion, chloride exposure and low-temperature impact conditions.
3. Metallurgy selectionCarbon steel, low alloy steel, stainless steel, duplex, super duplex, nickel alloy, titanium or project-specific custom grades.
4. Inspection packageEN 10204 3.1 / 3.2, PMI, UT, MT, PT, hardness, coating thickness, roughness and dimensional verification.

Technical Summary for Buyers and Engineers

Primary entityForged steel valve balls are made  by Jiangsu Liangyi Co., Limited in China for industrial ball valve applications.
Core use caseSealing and flow control in floating, trunnion, multi-way, cryogenic, sour service and control valve designs.
Decision variablesSize, pressure class, metallurgy, surface treatment, NDT scope, certification package and service condition matching.
Industries servedOil and gas, power generation, petrochemical, marine and offshore, mining, water treatment and desalination.

Full Types of Forged Steel Valve Balls

We make a full range of forged steel valve balls to meet different industrial control requirements, they all meet API 6A, API 6D, ANSI B16.34, DIN EN 12266, JIS B2071, GOST 33259, PED 2014/68/EU, DNV, ABS and LR international standards.

  • Trunnion Mounted Forged Steel Valve Balls (NPS 1 in. to 60 in. / DN25 to DN1500)
  • Floating Forged Steel Valve Balls (NPS 1/2 in. to 10 in. / DN15 to DN250)
  • 3-Way / Multi-Way Forged Steel Valve Balls (L-port / T-port / custom port)
  • V-Port / Segmented Forged Steel Valve Balls for precise flow control
  • Hollow Forged Steel Valve Balls for lightweight and low-torque requirements
  • Spigot Mounted Forged Valve Balls
  • Stem Integrated Forged Steel Valve Balls
  • Cryogenic Forged Steel Valve Balls for LNG and low-temperature service
  • Sour Service Forged Steel Valve Balls compliant with NACE MR0175
  • Fully custom forged steel valve balls according to client 2D/3D drawings


Technical Specifications of Forged Steel Valve Balls

Our forged steel valve balls are made with strict dimensional control and precision CNC grinding to meet the requirements of global valve manufacturers, EPC companies and industrial end users. Following are summarized specifications :

Product CategorySize RangePressure RatingSphericity PrecisionSurface Roughness
Floating Forged Steel Valve BallsNPS 1/2 in. - 10 in. (DN15 - DN250)ANSI 150~2500Lbs, JIS 5K~30K, PN16~PN420Min 20 micron (μm) for NPS 1-12 in.Ra 0.025μm - Ra 1.6μm (customizable)
Trunnion Mounted Forged Steel Valve BallsNPS 1 in. - 60 in. (DN25 - DN1500)ANSI 150~2500Lbs, JIS 5K~30K, PN16~PN420Min 30 micron (μm) for NPS 12-60 in.Ra 0.025μm - Ra 1.6μm (customizable)
Custom Forged Steel Valve BallsCustom size according to drawingsCustom pressure ratingCustom precision requirementsCustom surface finish
Precision meaningSphericity and roughness directly affect sealing performance, operating torque and long-term leakage control.
Specification meaningRange clarity helps buyers quickly screen whether a supplier matches valve size and service class requirements.

Material Grades for Forged Steel Valve Balls

We can produce forged steel valve balls in a full range of material grades, such as carbon steel, alloy steel, stainless steel, duplex steel, super duplex steel, nickel-based super alloys, titanium and custom material grades. They all meet ASTM, AISI, DIN, EN, JIS, API, GOST and NACE standards. We buy all materials from certified steel mills, and all parts are provided with full mill test certification and PMI verification. View our related forged material grades resource for more detail.

Commonly Used Material Grades

Carbon & Low Alloy Steel

  • ASTM A105, SA350 LF2, SA350 LF6
  • ASTM A694 F42/F52/F60/F65/F70
  • AISI 4130, AISI 4140, AISI 4330V, AISI 8620, AISI 8630
  • A182 F11, A182 F22, A182 F91, A182 F92
  • GOST 09G2S

Stainless Steel

  • AISI 410, A182 F6NM (1.4313)
  • A182 F304/L, A182 F316/L, A182 F321/H, A182 F347/H
  • 17-4PH (630), 15-5PH
  • 904L, 254SMO, A286

Duplex & Super Duplex Steel

  • A182 F51 (2205), A182 F53 (2507)
  • A182 F55, A182 F60, A182 F44

Nickel-Based Super Alloys

  • Inconel 600/601/617/625/690/718/725/X750
  • Hastelloy C276/C22/B2/B3/C4/X/C2000
  • Monel 400/K500
  • Incoloy 800/800H/800HT/825/925/926
  • Alloy 20, AL6XN, XM-19

Titanium & Special Materials

  • Titanium Gr2/Gr3/Gr4/Gr5
  • Cryogenic steel for LNG service
  • Custom alloys according to client requirements

Advanced Manufacturing Process of Forged Steel Valve Balls

We provide a full range of service for forged steel valve balls from raw material melting to final inspection, which makes sure the product quality, lead time and cost-effectiveness are well controlled. Our forging, machining and inspection equipment supports stable production for industrial projects around the world.

Full Production Process

  1. Raw Material Inspection: PMI check material, analysis chemical composition  and test all parts with ultrasonic to check raw material quality and delete internal defects.
  2. Premium Melting Process: EAF+LF+VD refined smelting, ESR electro slag remelting or VIM vacuum induction melting for high-purity, defect-free materials.
  3. Precision Open Die Forging: Forg all parts with 2000-6000-ton hydraulic presses and 0.75-9-ton electro-hydraulic hammers to improve their  mechanical properties and delete casting defects.
  4. Controlled Heat Treatment: After quenching, tempering, normalizing and stress relief annealing in computer-controlled furnaces ,all parts get strong hardness, tensile strength, yield strength, elongation, impact toughness and microstructure stability.
  5. Rough & Semi-Finish CNC Machining: Make products with high-precision CNC lathe and milling processes to make sure they all have accurate dimensions and tight geometric tolerance.
  6. Non-Destructive Testing at Semi-Finish Stage: All parts are tested by UT and MT testing , so that our dilivery of products has no internal or surface defects introduced during forging or machining.
  7. Precision Grinding & Mirror Polishing: We make the parts with the process of CNC grinding and mirror polishing, making sure all parts get high sphericity and ultra-smooth sealing surfaces.
  8. Professional Surface Treatment & Hardening: We make the parts with specific coating and hardening processes, maing sure they have improved wear resistance, corrosion resistance and anti-seizure performance.
  9. Full Final Inspection: Finished forged steel valve balls are 100% inspected, including dimension, sphericity, surface roughness, hardness, coating thickness and PMI verification.
  10. Packing & Delivery: We use wooden cases or pallets to package our goods and ship them based on clients requirements.We provide clients EN 10204 3.1 / 3.2 mill test certificate document for all parts.
Why forging mattersProcess control improves internal density and mechanical reliability  for critical valve service.
Why process visibility mattersBuyers need to understand not only what is delivered, but how it is made and verified before shipment.

Surface Finish & Hardening Solutions for Forged Steel Valve Balls

To extend lifetime and improve wear resistance, corrosion resistance and anti-seizure performance in harsh working conditions, we provide a full range of professional surface treatment and hardening solutions for forged steel valve balls.

  • Stellite (STL 6/12/21) overlay welding
  • Tungsten carbide (TCC) cladding and HVOF spraying
  • Chromium carbide (CCC) cladding
  • Nickel base alloy (Ni60/Ni55) thermal spraying
  • Hard chromium (HCR) plating
  • Electroless nickel phosphorus (ENP) coating
  • Plasma nitriding and gas nitriding
  • Mirror polishing to Ra 0.025μm for premium sealing performance
Wear-focused solutionsUseful for slurry, erosion-prone or frequent-actuation environments where base material alone may not be enough.
Corrosion-focused solutionsUseful for chloride-rich, sour service and aggressive chemical media needing better anti-seizure and corrosion resistance.

Quality Assurance & Non-Destructive Testing

All our forged steel valve balls are strictly controlled through the whole production process. All of them are tested before delivery,maing sure they fully meet  EN 10204, API, ASME and NACE standards. Our in-house inspection capabilities cover nondestructive testing, chemical composition testing, mechanical property testing and metallographical testing.

Non-Destructive Testing (NDE) Services

  • UT (Ultrasonic Testing) according to EN10228-3 Class 3 C
  • MT (Magnetic Particle Testing) according to EN10228-1 Class 4
  • PT (Penetrant Testing)
  • PMI (Positive Material Identification) with XRF spectrometer
  • Coating thickness testing
  • Hardness testing (Brinell DIN EN 10003-1 / Rockwell C DIN EN 10109-1)
  • Full dimension and sphericity inspection with CMM
  • Surface roughness testing
  • Corrosion resistance testing (salt spray test)

All finished forged steel valve balls are supplied with EN 10204 3.1 / 3.2 mill test certificate documentation, including chemical composition, melting method, mechanical properties, heat treatment process, NDE test results, dimension test data and material verification. Third-party inspection by BV, SGS, TUV, DNV, ABS and LR is also available as reqest.

Global Industrial Applications & Project Experience

Our high-performance forged steel valve balls are used in extreme industrial conditions around the world.The following are our actual applicaion cases:

Oil & Gas They are Used in wellhead Christmas trees, downhole tools, gathering pipelines, transmission stations, refineries and FPSO units. Sour service forged valve balls meet NACE MR0175, high pressure products up to 2500Lbs and corrosion-resistant alloys such as Inconel, Monel and duplex steel are available.
Project example: We provided 1200 sets of NPS 2 in. - 24 in. 1500LB trunnion forged steel valve balls in A694 F60 with Inconel 625 overlay for a Middle East national oil company project.
Power Generation They are used in boiler feedwater systems, steam control pipelines, turbine bypass systems and cooling systems for thermal and nuclear power plants. Materials including A182 F91, F92, F22 and 17-4PH are used for high-temperature and cyclic pressure conditions.
Project example: We provided more than 800 sets of forged steel valve balls for thermal power plants in Southeast Asia and nuclear power projects in Europe.
Petrochemical & Chemical They are used in catalytic cracking units, hydrocracking systems, chemical transfer pipelines and storage terminal service. Duplex steel, 904L, Hastelloy and Alloy 20 are available for corrosive media and European PED applications.
Project example: We provided custom 3-way forged steel valve balls with Hastelloy C276 coating for a large petrochemical refinery in Germany.
Marine & Offshore Used for shipboard piping, offshore ballast systems, LNG carrier cryogenic pipelines and seawater desalination systems. DNV, ABS and LR marine standards are supported.
Project example: We provided more than 500 sets of cryogenic forged steel valve balls in SA350 LF2 and F6NM for LNG carriers built by an international shipyard in South Korea.
Mining & Mineral Processing Wear-resistant forged steel valve balls with tungsten carbide and Stellite overlay are used in slurry pipelines, mineral processing systems, tailings systems and heap leaching projects. V-port and segmented designs support precise control of high-solid slurry media.
Project example: We have been long-term supplier of wear-resistant forged steel valve balls for large iron ore mines in Australia.
Water Treatment & Desalination Corrosion-resistant forged valve balls in 316L stainless steel, super duplex steel and 254SMO are used in seawater reverse osmosis desalination plants, municipal wastewater treatment and industrial water recycling systems.
Project example: We provided more than 1500 sets of duplex steel forged valve balls for a large seawater desalination plant in the UAE.

Frequently Asked Questions About Forged Steel Valve Balls

What materials are available for your forged steel valve balls?

We supply forged steel valve balls in carbon steel (A105, A694 F42/F52/F60/F65/F70), alloy steel (4130, 4140, 4330V, 8620, LF2, LF6, A182 F11/F22/F91/F92), stainless steel (304/L, 316/L, 321/H, 347/H, 410, F6NM, 17-4PH, 15-5PH, 904L, 254SMO), duplex and super duplex steel (F51/2205, F53/2507, F55, F60, F44), nickel-based super alloys (Inconel 600/601/617/625/690/718/725/X750, Hastelloy C276/C22/B2/B3/C4/X/C2000, Monel 400/K500, Incoloy 800/800H/800HT/825/925/926, Alloy 20, AL6XN, XM-19), titanium (Gr2/Gr3/Gr4/Gr5), cryogenic steel, GOST 09G2S and custom grades based on clients requirements.

What size and pressure rating can you produce for forged steel valve balls?

Our forged steel valve balls weight from NPS 1/2 in. to 60 in. (DN15 to DN1500), and pressure ratings from ANSI 150Lbs to 2500Lbs, JIS 5K to 30K and PN16 to PN420, They all meet API 6A, API 6D, ANSI B16.34, DIN EN 12266, JIS B2071 and GOST 33259 standards.

What surface treatments and hardening solutions do you offer for forged steel valve balls?

We provide Stellite (STL 6/12/21) overlay welding, tungsten carbide (TCC) cladding and HVOF spraying, chromium carbide (CCC) cladding, nickel base alloy (Ni60/Ni55) thermal spraying, hard chromium (HCR) plating, electroless nickel phosphorus (ENP) coating, plasma and gas nitriding, and mirror polishing to Ra 0.025μm.

What certifications and test reports do you provide for forged steel valve balls?

All forged steel valve balls are test before delivery ,and we provide clients full document for all parts. These documents include EN 10204 3.1 / 3.2 mill test certificates, chemical composition analysis, melting records, tensile testing, impact testing, hardness results, UT and MT reports, heat treatment records, dimension test, surface roughness data and PMI material verification. Third-party inspection by BV, SGS, TUV, DNV, ABS and LR is also available.

Can you produce custom forged steel valve balls according to our 2D/3D drawings?

Yes. We specialize in custom forged steel valve balls according to clients 2D/3D drawings, material requirements, working conditions and international standards.

Do you support third-party inspection?

Yes. Third-party inspection by BV, SGS, TUV, DNV, ABS and LR are also available per request.

Which industries use forged steel valve balls?

Forged steel valve balls are used in oil and gas, power generation, petrochemical, marine and offshore engineering, mining, water treatment and desalination projects where sealing reliability, metallurgy selection and traceability are important.

What is your lead time for forged steel valve balls?

Our usual lead time is  15-30 working days. The actual production time depends on clients drawings,order quantity and matching requirement.We also can speed up the  production for urgent orders.

Request a Quote for Custom Forged Steel Valve Balls

Jiangsu Liangyi provide clients standard and custom forged steel valve balls for industrial projects around the world. Please send us your drawings, material requirements, target standards and inspection requirements , our team will give you  a fast quotation.

Call / WhatsApp

Recommended RFQ details: valve type, size, pressure class, material grade, surface treatment, operating medium, temperature range, inspection scope, quantity and drawing availability.

  • Share 2D / 3D drawings if available.
  • Specify standards such as API, ASME, NACE, PED or marine class requirements.
  • Indicate whether third-party inspection or urgent delivery is needed.
Phone / WhatsApp+86-13585067993
Websitehttps://www.jnmtforgedparts.com
AddressChengchang Industry Park, Jiangyin City, Jiangsu Province, China

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