HIGH QUALITY
Wenzhou Shuangneng Valve Co., Ltd. specializes in high-quality stainless steel flange fittings, certified with CE, ISO9001, and TS. Our products meet international standards for durability, safety, and performance, serving industries like oil and gas, chemical processing, and water treatment. With advanced manufacturing and strict quality control, we deliver reliable, leak-proof solutions. Trust Shuangneng for precision and excellence in industrial piping.
SERVICE
We specialize in manufacturing premium stainless steel flange fittings, delivering exceptional quality and reliability. Our commitment extends beyond production—we offer comprehensive after-sales services, including technical support, product maintenance, and troubleshooting, ensuring your systems operate seamlessly. With a customer-first approach, we provide timely solutions and personalized assistance to meet your needs. Trust Shuangneng for not only superior products but also unmatched service and support throughout your project lifecycle. Your satisfaction is our priority.
PRICE
Our company specializes in manufacturing high-quality stainless steel flange fittings, offering the perfect balance between durability and affordability. We ensure top-notch materials and precision engineering, providing you with reliable products at competitive prices. Whether for industrial or commercial use, our stainless steel flange fittings deliver exceptional performance without breaking the budget. Trust us for cost-effective solutions that meet your needs without compromising on quality. Choose us for the best value in stainless steel flange fittings!
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
The production process of stainless steel pipe fittings is complex and precise, and ensuring that each process meets high-quality standards is key. The following is the hot rolling and cold drawing production process of stainless steel pipe fittings.
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In 2023, Wenzhou Shuangneng Stainless Steel Flange and Pipe Fitting Manufacturer in Zhejiang Wenzhou pioneered a high-demand project, crafting corrosion-resistant stainless steel flanges for offshore oil rigs. Faced with rising industry needs for durable marine components, the team employed advanced forging techniques and rigorous pressure testing, delivering 5,000 units within 8 weeks, ensuring compliance with international safety standards and reinforcing their leadership in precision manufacturing.
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In 2023, Saudi Aramco’s Jazan refinery replaced 1,200 carbon steel flanges with 316L stainless steel, cutting maintenance costs by 55% over 18 months. Coastal humidity caused rapid carbon steel corrosion, while 316L’s chloride resistance extended service life from 3 to 15+ years.
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In 2023, Wenzhou Shuangneng Valve Co., Ltd. helped an Indonesian power plant replace carbon steel flanges with 316L stainless steel, reducing chloride-induced failures by 40% within 12 months. Coastal salt spray and humidity accelerated corrosion in carbon steel, while 316L’s molybdenum-rich alloy prevented stress cracking.
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Wenzhou Shuangneng Valve Co., Ltd., a trusted stainless steel flange and pipe fittings manufacturer in China, meticulously crafts industrial-grade flanges through a 7-step ASME-certified process. Combining advanced CNC machining, precision heat treatment, and rigorous NDT testing, their flanges ensure leak-proof performance in extreme environments like oil refineries and desalination plants.
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Wenzhou Shuangneng warns against low-quality flanges causing leaks, explosions, and costly downtime. As a certified stainless steel flange fittings manufacturer, we ensure ASME B16.5-compliant products with PMI testing, Ra≤3.2μm surfaces, and 25+ year lifespans.
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Wenzhou Shuangneng Valve Co., Ltd. specializes in manufacturing corrosion-resistant stainless steel, duplex steel, and specialty alloy flanges, pipe fittings, and custom components for 20+ years. Compliant with ASME, DIN, JIS, and GB standards, we offer OEM solutions with MOQ 1 unit. Ideal for harsh environments in oil/gas, chemical, and marine industries.
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