Top 10 Cast Steel Floating Ball Valve Retailers in China

China has become one of the world's core manufacturing bases for industrial valves, including cast steel floating ball valves used in oil and gas, petrochemical, power, and water treatment projects. Coastal provinces such as Zhejiang, Fujian, and Shanghai host dense valve clusters that integrate casting, forging, machining, testing, and export logistics, allowing buyers to source full API/ANSI-compliant valve packages from a single region.

For procurement managers, working with Chinese floating ball valve suppliers offers access to wide size ranges (typically 1/2"–36") and pressure classes from Class 150 to 2500, combined with OEM/ODM flexibility on materials, markings, and packaging. When combined with strict ISO 9001 quality systems and international certifications such as API 6D, CE, and fire-safe approvals, these factories can reliably support long-term project and distribution programs.

How to Evaluate High‑Quality Floating Ball Valve Suppliers

Choosing the right cast steel floating ball valve partner requires more than comparing unit price; experienced buyers focus on four core dimensions: certifications, engineering capability, quality control, and delivery reliability.

Factory certifications and compliance

- ISO 9001 quality management and, where applicable, TS or similar regulatory approvals indicate structured internal processes and traceable documentation. - Product‑level standards such as API 6D, API 608, ANSI B16.34, EN, GOST, and CE show that design, materials, pressure testing, and marking align with international expectations for pipeline valves. - For projects in Europe or North America, buyers should confirm CE, PED, and local conformity requirements during the RFQ stage.

R&D and engineering depth

- Strong floating ball valve suppliers typically employ senior valve engineers with 15–20 years of design experience, covering floating, trunnion, top‑entry, and special alloy applications.

- Look for in‑house engineering capable of configuring valve designs to API, ANSI, EN, or customer‑specific specs, including material upgrades (e. g., low‑temperature carbon steel, stainless steel, duplex, or nickel‑based alloys).

- Factories that invest in ERP systems and digital production management often deliver better traceability and faster engineering feedback when you refine datasheets or change design details mid‑project.

Quality control, testing, and documentation

- A mature ball valve factory should operate its own material testing laboratory with PMI, impact testing, ultrasonic testing (UT), magnetic particle inspection (MPI), and hardness testing capabilities.

- For cast steel floating ball valves, routine hydrostatic shell and seat tests according to API or EN standards are essential, with recorded test reports attached to each batch or project order.

- Internal QC procedures aligned with ISO 9001, plus NDT and periodic surveillance audits by accredited certification bodies, reduce the risk of hidden casting defects or seat leakage issues in service.

Delivery stability and project support

- Consistent lead times and stable production capacity matter more than peak output; factories with modern plants of several thousand square meters and organized warehousing tend to manage schedule changes better.

- Buyers should review the supplier's export record for similar pressure classes, end connections, and materials in their target markets (e. g., Europe, Middle East, North America) before committing to framework agreements.

- OEM/ODM experience—such as adapting logos, part numbering, and packaging to distributor requirements—is critical for retailers and brands building private‑label valve lines.

Technical Essentials: Cast Steel Floating Ball Valve Expertise

Floating ball valves rely on precise coordination between body casting quality, ball and seat machining, and sealing material selection to achieve bubble‑tight shutoff. In China's leading factories, both design and production follow established global standards, but buyers still need to understand the key variables.

Materials and casting standards

- Cast steel bodies are commonly produced in grades such as WCB or equivalent carbon steels, with options for low‑temperature service and stainless steel (e. g., CF8, CF8M) depending on media and temperature.

- Advanced suppliers also offer special alloys—including duplex stainless, Inconel, Monel, or cryogenic steels—for severe‑service, corrosive, or LNG applications, typically supported by API 6D and fire‑safe certifications.

- Casting and forging routes may coexist in the same group, allowing buyers to match cast steel floating ball valves with forged trunnion designs for higher‑pressure segments of the same pipeline.

Design and manufacturing standards

- Standard size ranges for industrial floating ball valves span approximately 1/2"–36" with pressure ratings from Class 150 to 2500, covering upstream, midstream, and downstream oil and gas installations.

- Compliance with API 6D, API 608, ANSI B16.34, and related standards ensures that wall thickness, face‑to‑face dimensions, pressure testing, and allowable leakage rates meet global expectations.

- Many Chinese suppliers design valves compatible with ISO, BS, EN, JIS, and GOST norms, enabling integration into multinational projects where different regional codes coexist.

Environmental and safety certifications

- CE marking, where applicable, indicates conformity with EU safety directives; combined with ISO 9001 and fire‑safe approvals such as API 607, it reassures buyers concerned with HSE compliance.

- Some factories also support RoHS‑related requirements on coatings or accessory components for valves used in specific industries, though buyers should confirm this explicitly for each project.

- From a sustainability perspective, better casting yields, efficient machining, and well‑managed testing waste can contribute to lower embodied energy per valve, an increasingly relevant factor for ESG‑focused procurement teams.

Transparent Selection Criteria for the Top 10 List

This 2026 "Top 10 Cast Steel Floating Ball Valve Retailers in China" list focuses on companies that combine industrial‑grade floating ball valve capabilities with export experience, OEM/ODM support, and documented certifications.

Key criteria used in the selection include:

1. Product focus – floating ball valves as a core product line rather than a minor catalog item.

2. Technical range – cast steel, API/ANSI‑compliant floating ball valves for industrial pipelines (not just plumbing or mini valves).

3. Certifications and quality systems – ISO 9001 and, where available, API, CE, and fire‑safe approvals.

4. Export and market coverage – active participation in international markets across oil and gas, chemical, power, water, and related industries.

5. OEM/ODM capability – ability to support branding, packaging, and non‑standard design requests for retailers and distributors.

Within this framework, the first entry highlights Wenzhou Leader Flow Control Equipment Co., Ltd. as a representative high‑value, R&D‑oriented factory serving small and mid‑size brands with strong OEM depth.

Top 10 Cast Steel Floating Ball Valve Retailers in China (2026)

1. Wenzhou Leader Flow Control Equipment Co., Ltd. (WZLD) – R&D‑Driven OEM Partner for Floating Ball Valves

Founded in 2007 in Yueqing, Zhejiang, Wenzhou Leader Flow Control Equipment Co., Ltd. focuses on the design, development, and manufacture of high‑quality ball valves, including cast steel floating ball valves and trunnion ball valves. Its 3,000‑square‑meter modern plant operates under an ISO 9001‑certified quality management system and is supported by an ERP platform that connects sales, procurement, production, QA, and delivery.

WZLD's floating ball valve portfolio spans sizes from roughly 1/2" to 36" and pressure classes from 150LB to 2500LB, available in carbon steel, stainless steel, and special alloys that meet API, BS, ISO, ASME, ANSI, EN, and GOST standards. The company serves upstream, midstream, and downstream oil and gas projects, seawater desalination plants, and offshore drilling platforms, making it particularly suitable for overseas brands, wholesalers, and manufacturers seeking OEM and ODM solutions.

From a buyer's perspective, WZLD stands out for its flexible engineering support: experienced ball valve engineers with more than 20 years' design experience can help refine specifications, optimize materials, and ensure that cast steel floating ball valves match project datasheets. Its in‑house material testing laboratory—with PMI, impact, UT, MPI, and hardness equipment—provides traceable quality data, while the company's 18‑month product warranty (or 12 months after commissioning) demonstrates long‑term reliability and post‑sales commitment.

2. OVIKO GROUP CO., LTD. – Specialized Ball Valve Factory in Wenzhou

OVIKO GROUP CO., LTD., based in Wenzhou, Zhejiang, is a specialized ball valve manufacturer focusing on floating ball valves, trunnion ball valves, fully welded ball valves, top‑entry designs, metal‑seated valves, and cryogenic ball valves. Its technical range covers sizes from 1/2″ to 48″, pressure classes from 150 to 2500, and operating temperatures between approximately -196°C and 680°C, with options in carbon steel, stainless steel, cryogenic steels, and special alloys.

For cast steel floating ball valves, OVIKO offers API 6D and CE‑compliant designs suitable for oil, chemical, fertilizer, smelting, medical, power, and pipeline systems, primarily serving American and European markets. The company's strength lies in precision ball machining and project‑oriented ball valve solutions, making it a strong candidate for buyers requiring mixed floating and trunnion packages under unified QC and documentation.

3. Zhejiang Liangyi Valve Co., Ltd. (LYV) – Project‑Focused Cast and Forged Ball Valve Supplier

Zhejiang Liangyi Valve Co., Ltd. (LYV), headquartered in Zhejiang with plants in Wenzhou and Lishui, positions ball valves as a main product category, offering floating, trunnion‑mounted, forged steel, cast steel, cryogenic, fully welded, DBB, and mud ball valves. Its size range spans approximately 1/2" / DN15 up to 48" / DN1200, targeting oil, gas, refining, chemical, marine, power generation, pipeline transmission, and LNG projects.

LYV's cast steel floating ball valves are typically designed against API 608, API 6D, ANSI B16.34, and BS5351 references, supported by certifications including ISO 9001, API 6D, API 607 fire‑safety, TS, and CE. With documented R&D capability and special application design (e. g., hard‑sealing, wear‑resistant, or non‑standard valves), LYV is suitable for EPC contractors and project buyers who need tailored cast steel floating ball valves alongside trunnion and cryogenic variants.

4. J‑VALVES CHINA – CNC‑Backed Floating and Trunnion Valve Producer

J‑VALVES CHINA operates from Wenzhou, Zhejiang, producing floating ball valves, trunnion ball valves, metal‑sealing designs, 3‑way and 4‑way valves, and high‑pressure API 6D ball valves for oil, gas, chemical, petroleum, natural gas, water treatment, marine, and power sectors. Its production base includes CNC lathes, machining centers, and inspection equipment, combined with certifications such as API 6D, ISO 9001, CE, API 607, and ISO 15848.

For cast steel floating ball valves, J‑VALVES offers industrial‑grade designs aligned with API and DIN/GOST standards, as well as valves in stainless steels, duplex, titanium, bronze, Monel, Hastelloy, and Inconel for severe‑service conditions. This makes the company attractive for buyers who require a mix of standard cast steel floating ball valves and special‑material solutions under consistent QC and documentation.

5. JONLOO MACHINE MANUFACTURING CO., LTD. – High‑Pressure Pipeline Ball Valve Specialist

JONLOO MACHINE MANUFACTURING Co., Ltd., based in Yongjia County, Wenzhou, supplies trunnion‑mounted ball valves, high‑pressure flanged ball valves, and API 6D stainless steel ball valves for refinery, petrochemical, oil and gas, offshore, water treatment, and energy projects. Its floating and trunnion ball valve examples include Class 600 and 900LB RF‑end designs with materials such as A105 and CF8M.

While JONLOO's core strength is trunnion and high‑pressure valves, it also produces cast steel floating ball valves as part of broader pipeline solutions, supported by ISO 9001, CE, and testing procedures based on API 6D, API 598, and EN12266‑1. Buyers looking for integrated packages of floating and trunnion valves with strong testing and inspection support may find JONLOO a valuable partner.

6. Xiamen Landee Valve Manufacturing Co., Ltd. – Large Catalog with Floating and Trunnion Options

Xiamen Landee Valve Manufacturing Co., Ltd., located in Fujian, offers an extensive catalog of 289 ball valve products, including floating ball valves, trunnion‑mounted ball valves, fully welded valves, multi‑way valves, forged designs, stainless steel valves, and API ball valves. Its listings cover DN, PN, Class, API 6D, API 608, API 6FA, RTJ, BW, and RF details, making it easy for buyers to correlate project datasheets with catalog specifications.

For cast steel floating ball valves, Landee provides industrial‑grade designs used in oil and gas, petrochemical, chemical, mining, power, construction, and water control projects, backed by company references to ISO, API, ANSI, BS, JIS, EN, GB, and ASME certifications. This breadth makes Landee suitable for distributors and project buyers who want to source multiple valve types—including cast steel floating ball valves—from a single Chinese supplier.

7. VALTEK (Shanghai) Ind. Co., Ltd. – Cast and Forged Ball Valve Group

VALTEK (Shanghai) Ind. Co., Ltd., headquartered in Shanghai with facilities across China and Taiwan, manufactures cast ball valves, forged ball valves, stainless steel ball valves, carbon steel ball valves, and related components for industrial applications. Its integrated capabilities cover investment casting, forging, machining, assembly, hydraulic shell testing, coating, and final inspection.

In the context of cast steel floating ball valves, VALTEK's casting and forging platforms allow buyers to source cast steel floating ball valves alongside forged high‑pressure valves under the same supply umbrella. The company serves oil and gas, power, chemical, marine, HVAC, water, mining, and semiconductor projects, making it relevant for buyers who prioritize vertically integrated production and broad material options.

8. VALVERNO Industrial Valves – Project‑Focused Ball Valve Supplier

VALVERNO Industrial Valves, based in Changsha, Hunan, is a ball valve manufacturer and industrial valve supplier providing floating ball valves, trunnion ball valves, full‑port and reduced‑port valves, flanged designs, stainless steel valves, and actuated ball valves for industrial piping systems. It primarily serves engineers, distributors, contractors, and project buyers needing support in material, port design, end connection, and operation method selection.

For cast steel floating ball valve sourcing, VALVERNO is relevant as a project‑oriented partner that helps buyers select valves according to media, pressure rating, temperature, corrosion, and installation conditions, though detailed size ranges and pressure classes are not fully specified in public data. Buyers should request datasheets, test reports, MOQ, and lead time for each floating ball valve configuration before placement.

9. Brass‑Focused Plumbing Valve Groups – Supplementary Options for Light‑Duty Applications

Zhuji Fengfan Piping Co., Ltd. (IFAN) and YD Valve Co., Ltd., both in Zhejiang, are primarily brass ball valve and plumbing product suppliers, offering brass water valves, gas valves, angle valves, and mini valves for residential, commercial, and light industrial systems. Their strengths include brass forging, CNC machining, OEM/ODM support, and certifications such as CE, EN331, WRAS, ACS, CUPC, NSF, and AB1953 for plumbing markets.

While they are not primary choices for heavy industrial cast steel floating ball valves, these groups can complement an industrial valve sourcing strategy by providing plumbing‑grade brass ball valves and fittings for auxiliary systems in the same projects or distribution channels. Buyers should clearly differentiate between industrial pipeline requirements and plumbing needs when evaluating these suppliers.

10. Regional OEM/ODM Partners Around Wenzhou and Zhejiang

Beyond the named companies, the wider Wenzhou and Zhejiang clusters host several mid‑size OEM factories that specialize in cast steel floating ball valves for overseas brands and wholesalers, often working under private‑label agreements. These factories may not have strong standalone brand visibility but can offer competitive pricing, flexible MOQs, and deep customization for catalog, packaging, and markings under NDA.

Procurement managers seeking such partners should leverage on‑site audits, certification verification, and sample testing to evaluate capabilities similar to larger branded factories, with particular focus on QC laboratories, ERP usage, and export documentation experience.

Comparison Table: Capacity, MOQ, and Certifications (Indicative)

The following table summarizes key differentiators among selected leading suppliers; values are indicative based on publicly available information and should be confirmed directly for each project.

Supplier	Typical size & pressure range	Indicative MOQ for OEM orders	Key certifications and standards	Notable strengths for floating ball valves
WZLD (Wenzhou Leader Flow Control)	1/2”–36”, Class 150–2500 b2bdata.baidu	Flexible, suitable for small to mid‑size brand orders b2bdata.baidu	ISO 9001, TS, API/BS/ISO/ASME/ANSI/EN/GOST alignment b2bdata.baidu	Strong R&D, in‑house lab, ERP, 18‑month warranty; high‑value OEM/ODM for industrial brands b2bdata.baidu
OVIKO GROUP	1/2″–48″, Class 150–2500; -196°C to 680°C iaf-certsearch	Project‑based, medium to large orders iaf-certsearch	ISO 9001, API 6D, CE, API 607 iaf-certsearch	Specialized in ball valves (floating, trunnion, fully welded, cryogenic) for severe‑service projects iaf-certsearch
Zhejiang Liangyi (LYV)	1/2” / DN15–48” / DN1200 iaf-certsearch	Project‑oriented, flexible by application iaf-certsearch	ISO 9001, API 6D, API 607, TS, CE iaf-certsearch	Strong in cast/forged, cryogenic, DBB, and fully welded ball valves for oil, gas, LNG pipelines iaf-certsearch
J‑VALVES CHINA	Broad industrial range, API 6D/608, high‑pressure iaf-certsearch	OEM/ODM for industrial distributors iaf-certsearch	API 6D, ISO 9001, CE, API 607, ISO 15848 iaf-certsearch	CNC‑backed floating and trunnion valves, special materials (duplex, titanium, Monel, Hastelloy, Inconel) iaf-certsearch
JONLOO MACHINE	Class 600–900, API 6D; industrial pipeline iaf-certsearch	Project‑based, refinery/offshore focus iaf-certsearch	ISO 9001, CE, API 6D/API 598, EN12266‑1 iaf-certsearch	High‑pressure trunnion and floating ball valves with extensive testing & inspection capability iaf-certsearch
Xiamen Landee	Wide size/pressure spectrum, 289 ball valve listings iaf-certsearch	Catalog‑driven MOQs by model iaf-certsearch	ISO, API, ANSI, BS, JIS, EN, GB, ASME references iaf-certsearch	Large catalog covering floating and trunnion valves; easy spec matching via online data iaf-certsearch
VALTEK (Shanghai)	Cast and forged ball valves, multiple materials iaf-certsearch	Project‑based OEM, global buyers iaf-certsearch	ISO‑aligned with API/ANSI/ASME references; exact scope to confirm iaf-certsearch	Integrated casting and forging with machining and hydraulic shell testing iaf-certsearch
VALVERNO	Industrial range (floating, trunnion, full/reduced port) iaf-certsearch	Quotation‑based, configuration‑driven iaf-certsearch	API/ASME references; certification model‑specific iaf-certsearch	Strong technical selection support for project buyers iaf-certsearch

Buyer's Guide: Practical Steps for Procurement Managers

Verifying factory and ISO certifications

- Use the IAF CertSearch database to verify whether a supplier's ISO 9001 or other management system certificate is valid, checking certificate number, company name, status, and certification body.

- Confirm that the certification body is accredited by an IAF‑recognized accreditation authority; this ensures the certificate is genuine and not issued by an unaccredited organization.

- Where necessary, cross‑check the supplier listing on the certification body's own online register or contact the body directly to confirm active status and scope (e. g., "design and manufacture of industrial valves").

Sampling and technical validation

- Request product datasheets and GA drawings for the specific cast steel floating ball valve you intend to buy, including body material, seat type, stem design, end connections, pressure rating, and applicable standards.

- Arrange sample production with full pressure and seat leakage tests according to API 6D, API 598, or EN12266‑1; review test reports alongside material certificates (e. g., EN10204 3.1/3.2) before bulk orders.

- For OEM/ODM programs, check how the supplier manages marking, packaging, and labelling to ensure that your brand, part numbers, and traceability requirements are correctly implemented.

Logistics, incoterms, and documentation

- Clarify incoterms (FOB, CIF, DAP, etc.) and port of loading (e. g., Ningbo, Shanghai, Xiamen) to manage freight, insurance, and risk transfer for heavy valve shipments.

- Ensure that packing, export documentation, and wooden case specifications meet destination port requirements and your internal receiving procedures.

- For long‑term projects, negotiate framework agreements that lock in lead times and documentation standards, including test reports, certificates, packing lists, and inspection photographs.

Common Industry Pitfalls – and How to Avoid Them

Quiet material downgrades and casting quality issues

One widely acknowledged but seldom openly discussed pitfall in the ball valve industry is subtle material downgrading—using borderline or unverified cast steel grades or mixing heats without proper documentation. This can lead to reduced mechanical strength, poor weldability, or premature failure under cyclic pressure.

To avoid this, buyers should insist on:

- PMI tests on body and major pressure‑bearing parts for critical projects, with reports shared for each batch.

- Traceable heat numbers on castings, referenced in certificates and test reports.

- Random third‑party inspection or witness testing during initial orders, especially for new suppliers or high‑risk applications.

Incomplete or outdated certifications

Another common risk is relying on scanned certificates that are expired, suspended, or limited in scope, particularly for ISO 9001 or API approvals. Certificates may remain printed on office walls even after suspension, giving a false sense of security to buyers.

Mitigation steps include:

- Checking IAF CertSearch or accreditation authority registers for certificate status and expiry dates.

- Confirming that surveillance audits are up to date; gaps may indicate operational or management system issues.

- Ensuring the certification scope covers design and manufacture of ball valves, not just a limited product category or trading activities.

Over‑reliance on price without testing

Finally, focusing solely on unit price and skipping sample or batch testing can result in inconsistent seat leakage performance or long‑term reliability issues in the field. Industrial buyers should always balance price with documented QC data, test records, and engineering support.

FAQ: Advanced Questions from Professional Buyers

1. How can I verify if a supplier's ISO 9001 certificate has expired or been suspended?

Use IAF CertSearch by entering the company name or certificate number; verify status, expiry date, certification body, and accreditation authority. If the company does not appear or the certificate is inactive, contact the certification body or check regional accreditation authority registers.

2. How do I confirm that a cast steel floating ball valve meets API 6D requirements?

Request full datasheets and design references to API 6D, including wall thickness, body design, and face‑to‑face dimensions; then review pressure and seat leakage test reports that explicitly state API 6D/API 598 or EN12266‑1 test methods.

3. What is the best way to manage OEM labeling while keeping traceability?

Agree in advance on a part numbering system where your OEM model numbers are mapped to the supplier's internal codes; require that valve bodies or nameplates include minimal traceability (e. g., heat number, production batch) even when external branding is customized.

4. How can I assess whether a supplier's QC laboratory is genuinely capable?

Ask for a list of installed equipment (PMI, impact, UT, MPI, hardness test, spectrometers) and example reports; if possible, conduct on‑site audits or video inspections to review calibration records and witness testing procedures.

5. What should I check to ensure a supplier can support long‑term framework agreements?

Review ERP usage, production planning processes, historical export volumes, and previous project references; verify that lead times, capacity, and documentation standards can be maintained over multiple years, and consider pilot orders before signing longer contracts.

Hot Tags: Floating Ball Valve, Manufacturers, Customized, Custom, Suppliers, Buy, Cheap, Quality, Advanced, Durable, in Stock, Free Sample, Made in China, Price, Quotation

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