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Precision Forged Flanges &
High-Pressure Pipe Fittings

ZHEJIANG JIJIA PIPELINE INDUSTRY CO.,LTD. – A trusted manufacturer since 2010, specializing in high-quality forged flanges, socket welding fittings, and industrial pipeline solutions for global markets.

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About JiJia Steel

ZHEJIANG JIJIA PIPELINE INDUSTRY CO.,LTD. is a professional manufacturer based in Wenzhou, China, established in 2010. We specialize in forged flanges and high-pressure socket welding pipe fittings, serving industries such as oil & gas, petrochemical, power generation, and marine engineering.

With strict adherence to international standards including ANSI, ASME, DIN, BS, EN, GB, and more, our products are engineered for durability, precision, and safety under extreme conditions.

2010
Founded
100+
Global Clients
JiJia Steel Workshop

Our Products

High-performance forged components engineered to meet global industrial standards.

Weld-on Collar Plate Flange

Weld-on Collar Plate Flange

EN1092/DIN Type 32 – Ideal for low-pressure applications with secure weld-on design.

  • Standards: EN1092, DIN
  • Materials: 304, 316, F51, 904L
  • Size: DN15–DN2000
Weld Ring Neck Flange

Weld Ring Neck Flange

EN1092/DIN Type 35 – Designed for high-stress environments with enhanced alignment.

  • Standards: EN1092, DIN
  • Pressure: Class 150–3000LB
  • Materials: TP316L, Inco600, F53
Weldo Flange

Weldo Flange

Robust design for seamless integration in pipeline systems requiring high integrity.

  • Standards: ANSI, ASME, GB
  • Size: 1/2"–80"
  • Pressure: PN0.6–42MPa
Nipo Flange

Nipo Flange

Compact solution for tight spaces, combining nozzle and flange in one unit.

  • Materials: 316L, 321, 2205
  • Standards: ASME, DIN
  • Applications: Marine, Chemical
Spectacle Blind Flange

ASME Spectacle Blind Flange

Used for isolation during maintenance – dual function in one assembly.

  • Class: 150LB–2500LB
  • Materials: Carbon, Stainless, Duplex
  • Standards: ASME B16.48

Plate Flange (PL)

EN1092/DIN Type 01A/B – Simple, cost-effective solution for non-critical lines.

  • Standards: EN, DIN, GB
  • Size: DN15–DN1200
  • Material: 304, 316, CS

Threaded Flange (TH)

EN1092/DIN Type 13 – Ideal for systems requiring frequent assembly/disassembly.

  • Pressure: Up to 600LB
  • Standards: ANSI, BS, DIN
  • Material: 316, F51, Inco825

Welding Neck Flange (WN)

EN1092/DIN Type 11 – High-strength flange for critical high-pressure applications.

  • Class: 150–2500LB
  • Standards: ASME, EN, JIS
  • Size: 1/2"–48"

Why Choose JiJia Steel?

Decades of expertise, strict quality control, and global compliance ensure unmatched reliability.

Certified Quality

Compliant with ANSI, ASME, DIN, EN, and GB standards. Full material traceability and third-party inspection available.

Advanced Workshop

State-of-the-art forging and machining facilities ensure precision and consistency across all product lines.

Global Reach

Trusted by clients across Asia, Europe, the Middle East, and North America with reliable logistics support.

14+
Years Experience
100+
Clients Worldwide
500+
Product Types
99.8%
Customer Satisfaction

Frequently Asked Questions

What materials do you offer?

We offer Austenitic stainless steels (304, 316L, 321), heat-resistant alloys (904L, 310S, Inco600, Inco825), and duplex steels (2205, 2507).

What standards do your products meet?

Our products comply with ANSI, ASME, DIN, BS, EN, GB, JB, HGJ, and SHJ standards.

What is your production capacity?

We have a fully equipped workshop capable of producing forged flanges and fittings from DN15 to DN2000 (1/2" to 80") and pressure ratings up to 3000LB.

Can you provide custom solutions?

Yes, we support OEM/ODM services and can manufacture based on customer drawings and specifications.

Get in Touch

For inquiries, quotes, or technical support, visit our official website to connect with our team.

Phone

+86-577-86868785

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