Wenzhou Leina Valve — OEM/ODM Capabilities

Custom Manufacturing Solutions

Wenzhou Leina Valve is a trusted OEM/ODM partner for global valve distributors, engineering contractors, and industrial brands seeking reliable, specification-driven manufacturing from China's premier valve production hub.

What We Offer

OEM (Original Equipment Manufacturing)

• Manufacture to your exact drawings, specifications, and branding requirements
• Full private-label production with your logo, part numbers, and packaging
• Consistent quality across repeat orders with documented traceability

ODM (Original Design Manufacturing)

• Leverage our existing proven valve designs and adapt them to your market needs
• Engineering support for material selection, pressure rating optimization, and connection standard conversion
• Rapid prototyping and sample development before full-scale production

Customization Scope

Why Partner with Leina for OEM/ODM

• Wenzhou Manufacturing Ecosystem — Located in China's established valve industry cluster with complete upstream supply chain access (casting, machining, assembly, testing).
• Multi-Standard Engineering — In-house capability to produce to GB, ANSI, and JIS specifications without re-tooling, enabling single-source supply for distributors serving multiple regional markets.
• Actuation-Ready Platform — Our high-platform ball valve series is designed for seamless integration with third-party pneumatic and electric actuators, reducing your assembly lead time.
• Scalable Production — From small-batch custom orders to high-volume recurring production runs, with consistent quality control and documented inspection records.
• Material Flexibility — Standard inventory in 304/316 stainless steel and WCB carbon steel; specialty alloys and exotic materials sourced on request.

Engagement Process

1. Requirement Brief — Share your specifications, target standards, volume expectations, and branding guidelines.
2. Engineering Review — Our technical team evaluates feasibility, suggests optimizations, and provides a quotation with lead time.
3. Sample Approval — Pre-production samples manufactured for your inspection and testing.
4. Production & QC — Full-scale manufacturing with in-process inspection and final pressure testing per agreed standards.
5. Delivery — Export-standard packaging with full documentation (material certificates, test reports, packing list).

For OEM/ODM inquiries, technical specifications, or sample requests, contact our engineering sales team to discuss your project requirements.

Wenzhou Leina Valve — Product Line Overview

Core Product Range

Ball Valves (Flagship Series)

Leina Valve specializes in a comprehensive portfolio of industrial ball valves engineered for reliability across demanding applications:

• One-Piece / Two-Piece / Three-Piece Threaded Ball Valves — Compact, cost-effective solutions for general-purpose piping systems with NPT threaded connections.
• Flanged Ball Valves — Designed for high-integrity pipeline connections conforming to ANSI/150LB and GB flange standards.
• Wafer-Type Ball Valves — Space-saving design ideal for installations between flanges, reducing weight and material costs.
• High-Platform Ball Valves — ISO 5211 mounting pad compatible, ready for direct integration with pneumatic or electric actuators for automated process control.

Connection Types: NPT threaded, butt-weld, flanged. Pressure Ratings: 1000 WOG, Class 150 / Class 300.

Complementary Valve Portfolio

Beyond ball valves, Leina provides a full suite of industrial valves to serve as a single-source supplier:

Material Specifications

Leina valves are manufactured in a range of industry-standard materials to match corrosion, temperature, and pressure requirements:

• Stainless Steel: 304 (CF8) / 316 (CF8M) — for corrosive media, food-grade, and marine environments.
• Carbon Steel: WCB — for general industrial and oil & gas applications.

Design Standards & Compliance

All products are manufactured and tested in accordance with internationally recognized standards:

• GB (Chinese National Standard)
• ANSI / ASME (American National Standards — Class 150 / 300)
• JIS (Japanese Industrial Standards)

Why Leina Valve

• One-Stop Sourcing — From ball valves to gate, globe, check, and needle valves, all under one roof.
• Actuation-Ready — High-platform series supports seamless pneumatic and electric automation upgrades.
• Multi-Standard Capability — GB, ANSI, and JIS compliance enables supply to global markets without re-engineering.
• Material Flexibility — Stainless steel and carbon steel options to match exact service conditions.

Wenzhou Leina Valve — R&D and Engineering Capabilities

Engineering-Driven Innovation

Wenzhou Leina Valve operates a dedicated R&D and engineering function focused on continuous product optimization, multi-standard compliance, and application-specific valve solutions for global industrial markets.

Core R&D Competencies

Multi-Standard Design Engineering

• In-house capability to design and engineer valves to GB (Chinese National), ANSI/ASME (American), and JIS (Japanese Industrial) standards within a single production framework
• Seamless conversion between pressure classes (1000 WOG, Class 150, Class 300) and connection types (NPT threaded, butt-weld, flanged) without re-tooling
• Cross-standard dimensional analysis to ensure interchangeability and global market compatibility

Material Science & Selection

• Expertise in austenitic stainless steel grades (304/CF8, 316/CF8M) and carbon steel (WCB) for corrosion resistance, temperature tolerance, and pressure integrity
• Material compatibility analysis for diverse media — water, oil, gas, steam, and chemical process fluids
• Custom alloy sourcing and qualification for specialized application requirements

Actuation Integration Engineering

• ISO 5211-compliant high-platform ball valve design for direct mounting of third-party pneumatic and electric actuators
• Torque calculation and stem dimensioning to match actuator specifications across valve sizes and pressure classes
• Automation-ready platform development for customers transitioning from manual to automated process control

Product Development Process

Quality Assurance & Testing

• Incoming Material Inspection — Spectrochemical analysis and mechanical property verification for raw castings and forgings
• In-Process Quality Control — Dimensional checks at critical machining stages, surface finish verification, and thread gauge inspection
• Final Product Testing — Hydrostatic shell test (1.5× working pressure), pneumatic low-pressure seat test, and functional operation test per applicable standard
• Documentation & Traceability — Material test certificates (MTC), inspection reports, and batch-level traceability for export compliance

Technical Support Services

• Application Engineering — Valve selection guidance based on media type, temperature range, pressure class, and cycle frequency
• Customization Engineering — Modified end connections, special bore configurations, extended stems, and anti-static/anti-blowout stem designs
• Standard Conversion — Translating customer drawings from one national standard to another while maintaining functional equivalence
• Sample Development — Rapid prototyping for customer evaluation and approval before committing to production tooling

R&D Infrastructure

Located in Wenzhou — China's established valve manufacturing cluster — Leina benefits from:

• Proximity to specialized foundries, forging houses, and precision machining suppliers
• Access to regional testing laboratories and certification bodies
• A mature talent pool of valve engineers, metallurgists, and quality professionals
• Short supply-chain lead times enabling faster iteration cycles from design to production

For technical inquiries, custom engineering requests, or sample development discussions, contact our engineering team to explore how Leina's R&D capabilities can support your product requirements.

Wenzhou Leina Valve Co., Ltd. was officially established on September 9, 2013. It is located in the Binhai Park of the Wenzhou Economic and Technological Development Zone—a region at the forefront of China's private economic development. Since its inception, the company has prioritized product technology innovation as the core driver of its strategic growth, adopting a specialized business model that integrates research and development, manufacturing, and sales.

Over more than a decade of development, Leina Valve has achieved significant milestones in scale and corporate qualifications. The company has progressively increased its registered capital to RMB 5.8 million and earned the "Grade A Taxpayer" designation, a testament to its superior product quality and compliant management practices. The company has also actively built its intellectual property portfolio, securing five registered trademarks and multiple patents. Notably, in April 2025, it obtained a utility model patent for a "Y-type butt-weld filter," which utilizes electric-heating butt-welding technology to substantially enhance product sealing performance and service life.

As its capabilities have grown, Leina Valve has actively expanded its market presence both domestically and internationally. It has participated in major industry exhibitions—such as the China Import and Export Fair (Canton Fair) and the Chengdu International Environmental Protection Expo—and has developed several corporate brands, including "LEINA VALVE." Guided by the philosophy that "quality products capture the market and new technologies win the future," Leina Valve continues to advance steadily in the general equipment manufacturing sector; its products now offer performance and structural specifications that are interchangeable with comparable imports, earning widespread recognition in both domestic and international markets.

Wenzhou Leina Valve Co., Ltd. is dedicated to providing customers with comprehensive fluid control solutions, spanning R&D and design, precision manufacturing, sales, and import/export services. Regarding customized R&D, the company utilizes advanced software—such as CAD, 3D modeling, and finite element analysis—to design and optimize products based on specific customer operating conditions. In terms of manufacturing, the company operates a 3,000-square-meter facility equipped with over 50 modern CNC machines, offering custom valve fabrication with various connection types, including threaded (internal/external), welded, and flanged connections.

The company offers an extensive product portfolio comprising ball valves, gate valves, globe valves, check valves, and specialty valves, available in materials such as stainless steel, carbon steel, and alloy steel. These products feature exceptional performance capabilities, supporting pressure ratings up to 2500LB (PN420) and operating temperatures ranging from -120°C to 450°C, thereby meeting the rigorous demands of industries such as hydropower, chemical processing, and metallurgy. Furthermore, the company holds full qualifications for the import and export of goods and technology, enabling it to provide seamless global procurement and technical support services to domestic and international clients.