Customization: | Available |
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After-sales Service: | 24h Online |
Type: | Seamless/Welded |
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1. Valve Types and Classifications
1.1 By Operation Method:
Manual Valves (handwheel, lever, or gear operated)
Automated Valves (electric, pneumatic, or hydraulic actuation)
Self-Acting Valves (pressure or temperature activated)
1.2 By Design and Function:
Gate Valves: Linear motion, full bore, on/off service
Globe Valves: Precise flow regulation, good throttling
Ball Valves: Quarter-turn, bubble-tight shutoff
Butterfly Valves: Compact, lightweight, moderate throttling
Check Valves: Prevent backflow (swing, lift, dual-plate designs)
Plug Valves: Multi-port directional control
Diaphragm Valves: For slurries and corrosive media
Safety/Relief Valves: Pressure protection devices
2. Material Specifications
2.1 Body Materials:
Cast Iron (ASTM A126)
Carbon Steel (ASTM A216 WCB)
Stainless Steel (ASTM A351 CF8/CF8M)
Alloy Steels (WC6, WC9)
Bronze (ASTM B62)
PVC/CPVC (ASTM D1784)
2.2 Trim Materials:
Stainless steel (316, 17-4PH)
Hardened alloys (Stellite, Hastelloy)
PTFE/PEEK for sealing surfaces
3. Performance Standards
3.1 Pressure-Temperature Ratings:
ASME B16.34 (Valve pressure ratings)
API 600 (Steel gate valves)
API 598 (Valve inspection and testing)
3.2 End Connections:
Flanged (ASME B16.5, B16.47)
Butt-weld (ASME B16.25)
Socket-weld/Threaded (ASME B16.11)
4. Industrial Applications
4.1 Oil & Gas:
Wellhead valves (API 6A)
Pipeline valves (API 6D)
Refinery process valves (API 600)
4.2 Power Generation:
Boiler feedwater valves
Steam turbine bypass valves
Cooling water control valves
4.3 Chemical Processing:
Corrosion-resistant alloy valves
High-purity diaphragm valves
Lined valves for aggressive media
4.4 Water/Wastewater:
Resilient-seated gate valves
Large-diameter butterfly valves
Check valves for pump protection
4.5 HVAC Systems:
Balancing valves
Thermostatic control valves
Pressure-independent valves
5. Selection Considerations
5.1 Service Parameters:
Fluid characteristics (corrosivity, viscosity)
Pressure-temperature profile
Flow requirements (Cv calculations)
5.2 Operational Requirements:
Frequency of operation
Leakage class (ANSI FCI 70-2)
Fail-safe positions
5.3 Maintenance Factors:
Ease of repair
Spare parts availability
Expected service life
6. Emerging Technologies
Smart valves with IIoT connectivity
Additive manufactured valve components
Nanocomposite sealing materials
Low-emission packing systems (API 622)
7. Quality Assurance
NDE (RT, PT, UT)
Cryogenic testing
Fugitive emission testing (ISO 15848)
Fire-safe testing (API 607/API 6FA)
1.Export sea worthy package + water proof paper
2.Safe loading and fixing Professional teams
Delivery Detail: within 7-10 working days after receiving the deposit or according to your order quantity.
Wuxi Tongno Special Steel Co., Ltd. was founded in 2013, the registered capital of 5 million yuan, for the professional production of seamless steel pipe manufacturing enterprises; after years of rapid development, Wuxi Tongno Special Steel Co., Ltd. now has three types of seamless steel pipe production line;
Wuxi Tongno Special Steel Co., Ltd. has been adhering to the 'quality first, customer first' business philosophy, to ensure that the products of high-precision, wide range of wall thicknesses, small quantities of many varieties, fast-paced characteristics of the production, sales in the domestic advanced level, especially in the small-diameter medium-thick-walled and large-calibre thin-walled alloy seamless steel pipe production at the domestic advanced level. Products at home and abroad enjoy a reputation for a variety of project construction, play their own characteristics of manufacturing energy.
1. Exceptional Service: We guarantee a response to all inquiries within 12 hours.
2. Certifications: Proudly holding ISO 9001, CE, and SGS certifications.
3. Cost - Effective Quality: Benefit from competitive prices and top - notch quality, as our products are directly sourced from our own factory.
4. Robust Production Capacity: With a monthly output of 20,000 tons, we ensure seamless production.
5. Flexible Payment Terms: We accept various payment methods, including T/T and L/C.
6. Swift Delivery & Standard Export Packaging: Expect quick delivery and products packaged in line with international export standards.
7. Factory - Direct Advantage: Our own factory enables us to offer competitive prices without compromising on quality.
8. Third - Party Testing: We welcome any third - party testing to verify the quality of our products.
9. Expert Team Support: Backed by a professional sales team and a reliable factory.
10.Dedicated to Customization: Your individual specifications are not just accepted-they're the cornerstone of our service. We're committed to delivering on every customized request.
√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.