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Premium Pipe Flanges & Fittings Manufacturer

Since 2008, Dingsheng Pipe Industry Co., Ltd. has delivered high-quality forged flanges, stainless steel flanges, and custom pipe fittings to global industries. Certified to ISO9001, CE, and ISO13485 standards.

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Industrial Grade Quality

Conforming to ANSI, ASME, DIN, JIS, GOST, BS, and ISO standards.

Global Export Experience

Rich experience in foreign trade export since 2008.

Certified Excellence

CE, ISO9001, and ISO13485 certified manufacturing facility.

Dingsheng Pipe Manufacturing Facility

About Dingsheng Pipe Industry

Since 2008, Dingsheng Pipe Industry Co., Ltd. has been a notable high-tech enterprise located in Zhejiang province, China. We specialize in designing and manufacturing an extensive range of flanges, pipe fittings, and connectors for the oil & gas, power generation, and industrial sectors.

Our products conform to international standards including ANSI, ASME, DIN, JIS, GOST, BS, and ISO, ensuring superior quality and performance across diverse applications.

Over 3,000 square meters production facility
Intimate after-sales service
Factory-direct pricing
Custom & non-standard solutions
Learn more about our services →

Why Choose Dingsheng?

We combine technical expertise, global compliance, and customer-focused service to deliver reliable piping solutions.

Quality Assurance

All products undergo rigorous testing and meet CE, ISO9001, and ISO13485 standards.

Custom Manufacturing

We offer non-standard and custom flanges tailored to your project specifications.

Global Export Ready

Extensive experience in international logistics and documentation.

24-Hour Support

Dedicated team ready to assist with inquiries, quotes, and technical support.

Our Featured Products

High-performance flanges and fittings engineered for durability and precision.

ANSI B16.5 WN Flanges

ANSI B16.5 WN Flanges

Stainless Steel 316 Flange for Pressure Vessel Applications, 1/2" to 24".

  • Material: SS316
  • Standard: ASME B16.5
  • Pressure: Class 150–2500
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Stainless Steel EN1092-1 TYPE 2 LOOSE PLATE Flange

EN1092-1 TYPE 2 Loose Plate Flange

Stainless steel loose flange for easy maintenance and alignment.

  • Material: 304 / 316L
  • Standard: EN1092-1
  • Type: Lap-Joint / Loose Flange
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ASTM 316/316L Blind Flange

ASTM 316/316L Blind Flange

Forged stainless steel blind flange, ANSI B16.5 CL600 rated.

  • Material: 316L
  • Standard: ANSI B16.5
  • Class: 600
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Long Weld Neck Flange

ASME B16.5 Long Weld Neck Flange

2 Inch, 2500LB stainless steel long welding neck flange.

  • Size: 2"
  • Pressure: 2500LB
  • Standard: ASME B16.5
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Custom Non-Standard Flanges

Tailored solutions for unique industrial requirements.

  • Type: Custom Forged Flanges
  • Diameter: Up to DN1500
  • Material: Carbon, Alloy, Stainless Steel
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Factory-Direct Pricing

Eliminate middlemen with direct-from-factory supply chain.

  • Savings: Up to 30% vs. distributors
  • MOQ: Flexible, project-based
  • Delivery: Global shipping available
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Concentric & Eccentric Reducers

Stainless steel industrial reducers for seamless pipeline transitions.

  • Type: Buttweld, Concentric, Eccentric
  • Material: SS304, SS316
  • Standard: ASME B16.9
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Pipe Fitting SA403 WP304L Stub End

High-quality stub ends for lap joint applications.

  • Material: WP304L
  • Standard: SA403
  • Type: Butt-weld Stub End
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Trusted by Global Industries

Engineered for performance, reliability, and compliance.

15+
Years in Business
3000+
m² Factory Space
50+
Countries Served
24h
Response Time

Our Certifications

CE Certified ISO9001 ISO13485 ANSI Compliant ASME B16.5

Frequently Asked Questions

What materials do you offer for flanges?

We manufacture flanges in carbon steel, stainless steel (304, 316, 316L), alloy steel, and duplex materials, depending on application requirements.

Can you produce custom or non-standard flanges?

Yes, we specialize in custom and non-standard flange manufacturing. Provide your drawings or specifications for a quote.

What standards do your products comply with?

Our products meet ANSI, ASME, DIN, JIS, GOST, BS, ISO, and EN1092-1 standards, with full traceability and certification.

What is your typical lead time?

Standard products: 15–20 days. Custom orders: 25–45 days, depending on complexity and quantity.

Do you offer OEM services?

Yes, we provide OEM manufacturing with private labeling and packaging options for bulk orders.

Contact Us

Get in touch for quotes, technical support, or custom solutions.

Address

No. 1156, Binhai 1st Road, Longwan District, Wenzhou City, Zhejiang, China

Phone

+86-18267806783

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