China Gate Valve Manufacturer
Since 1998, XINTAI Valve has manufactured industrial gate valves for oil, gas, power, chemical, and water projects across 50+ countries. API 600 · API 602 · CE/PED certified.
Gate Valve Product Range
From small-bore forged gate valves to large-diameter casting designs, XINTAI covers a full range of gate valves for isolation service in critical pipelines.
Forged Wedge Gate Valve
Compact forged body with superior strength for high-pressure, small-bore applications. Size: 1/4"–4" · DN8–DN100.
View Details →
Thread Gate Valve
Threaded end connection for easy installation in utility, steam, and instrument lines. Size: 1/8"–4".
View Details →
Bellow Seal Gate Valve
Metal bellows sealing prevents fugitive emissions — ideal for toxic, flammable, and environmentally sensitive media. Size: 1-1/4"–56".
View Details →
DIN Flange Cast Steel Gate Valve
DIN standard flanged connection in carbon steel. PN16–PN63. Size: 1/2"–12".
View Details →
API Flange Stainless Steel Gate Valve
Stainless steel and duplex body for corrosive media in chemical and offshore environments. Size: 1/2"–48".
View Details →
Butt Welding Gate Valve
Butt weld end connection for permanent pipeline installation — zero-leakage joints for high-pressure service. Size: 1-1/4"–56".
View Details →
Casting Wedge Gate Valve
Cost-effective cast body design for general industrial isolation service. Flanged, SW, BW, NPT connections. Size: 3/8"–36".
View Details →
API 602 Forged Steel Gate Valve
Compact forged design per API 602 for instrument, sampling, and high-pressure lines. Size: 1/2"–2". ASME B16.11 / B1.20.1.
View Details →Gate Valve Specifications
XINTAI gate valves are engineered to meet API, ASME, DIN, and ISO standards across a wide range of sizes, pressure classes, and materials.
| Parameter | Casting Wedge Gate Valve | Forged Steel Gate Valve | Pressure Self-Sealing Gate Valve | DIN Flange Gate Valve |
|---|---|---|---|---|
| Size Range | 3/8"–36" (DN10–DN900) | 1/2"–2" (DN15–DN50) | 2"–48" (DN50–DN1200) | 1/2"–12" |
| Pressure Class | Class 150–2500 (PN10–PN420) | Class 150–2500 (PN10–PN420) | Class 600–2500 | PN16–PN63 |
| Body Material | WCB, WCC, LCC, LCB, CF8, CF8M, WC6, WC9, C5, C95800 | A105, F304, F304L, F316, F316L, F11, F22, F51 | WCB, WC6, WC9, C5, C12, CF8, CF8M, Duplex SS | Carbon Steel |
| End Connection | Flanged (RF, RTJ) / BW / SW / NPT | SW / Threaded (NPT, BSP) / BW / Flanged | Flanged (ASME B16.5/B16.47) / BW (ASME B16.25) | BW, RF (EN 1092-1) |
| Temperature Range | -160°C to +595°C | -160°C to +595°C | -29°C to +593°C | Standard service |
| Design Standard | API 600 / API 6D / ASME B16.34 | API 602 / ASME B16.34 | API 600 / ASME B16.34 / BS 1414 | DIN 3357 |
| Testing Standard | API 598 / API 6D | API 598 | API 598 / ISO 5208 | EN 12266 |
| Actuation | Lever / Gear / Pneumatic / Electric | Handwheel / Gear / Pneumatic / Electric | Handwheel / Bevel Gear / Electric / Pneumatic | Handwheel / Gear / Actuator |
| Best For | Oil & gas, petrochemical, power, water treatment | Oil & gas, chemical, high-pressure steam, water | Power generation, refining, petrochemical, high-pressure steam | Water, oil, air, general industrial |
Industry Applications
XINTAI gate valves provide reliable full-bore isolation across major industrial sectors worldwide.
Oil & Gas Pipelines
Isolation solutions for midstream and downstream oil & gas pipeline transportation systems.
Chemical & Petrochemical
Corrosion-resistant gate valves in stainless steel, Inconel, and Monel for acids, alkalis, and solvents.
Power Generation
High-temperature gate valves for steam isolation in thermal, nuclear, and combined-cycle power plants.
Water & Wastewater
Resilient-seated and metal-seated gate valves for municipal water distribution and treatment plants.
LNG & Cryogenic
Extended bonnet gate valves rated for cryogenic service down to -196°C at LNG terminals and gas processing plants.
Mining & Metallurgy
Heavy-duty gate valves for slurry, tailings, and high-abrasion mining environments.
Why Procurement Teams Choose XINTAI
What sets XINTAI apart isn't a single factor — it's how manufacturing depth, material expertise, and project support come together.
🏭 Vertical Integration
From raw steel casting to CNC machining and final assembly — every production stage happens under one roof, eliminating supply chain delays and quality gaps.
🔧 Special Alloy Capability
In-house metallurgy for Inconel 625, Monel 400, Duplex 2205, Super Duplex 2507, and titanium — serving sour gas, offshore, and cryogenic applications down to -196°C.
📐 Full-Range Engineering
Gate valves from 1/4" to 56", Class 150 to 2500, with forged, cast, bellow seal, and butt weld options — one manufacturer for your entire project specification.
🔬 100% Pressure Tested
Every valve undergoes hydrostatic shell and seat testing per API 598 before shipment. PMI, radiographic, and ultrasonic testing available on request.
📦 Stock + Make-to-Order
Common sizes ship from stock within 7 days. Custom and large-diameter valves follow a make-to-order cycle of 15–60 days with weekly progress updates.
🤝 Project-Based Support
Dedicated project engineers handle valve selection, GA drawing approval, third-party inspection coordination (SGS, BV, TÜV), and export documentation.
Gate Valve Manufacturing
XINTAI's integrated production line in Wenzhou, China covers the complete manufacturing cycle — from investment casting and open-die forging to multi-axis CNC machining, automated welding, and clean-room assembly.
Key equipment includes 8 casting production lines, vacuum degassing furnaces, CNC vertical lathes up to 3.2m swing diameter, and a dedicated hydrostatic test bench rated to 10,000 PSI — enabling gate valve production from 1/4" up to 56" in a single facility.
Quality Inspection Process
Every XINTAI gate valve passes a rigorous multi-step inspection before shipment, with full test reports provided.
Visual Examination
Surface finish, casting quality, markings
Dimension Check
Face-to-face, bore size, flange per ASME/DIN
Pressure Testing
Shell & seat test per API 598
Painting & Packing
Anti-corrosion coat, export wooden cases
Test Report
MTR, test certificates, CoC documents
Certifications & Standards
Pre-qualified for major EPC projects — these certifications mean your XINTAI gate valves pass vendor approval without additional documentation hurdles.
How to Select the Right Gate Valve
Choosing the correct gate valve depends on your pipeline parameters. Here are the key factors to evaluate.
Forged vs. Casting
Forged gate valves offer higher strength for small-bore, high-pressure lines. Casting is more cost-effective for larger sizes and standard pressures.
Wedge Type
Solid wedge for general service; flexible wedge for thermal cycling; double disc (parallel slide) for high-temperature steam systems.
Bonnet Design
Bolted bonnet is standard. Pressure seal bonnets suit Class 600+ applications. Bellow seal bonnets prevent fugitive emissions for toxic media.
End Connection
Flanged for easy maintenance; butt weld for permanent, leak-free joints; threaded/SW for small-bore instrument lines.
Frequently Asked Questions
Common questions from procurement managers and engineers about XINTAI gate valves.
