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SO Flange
SDFL



Dual-phase structure anti-stress cracking, solve high-pressure corrosion pipeline failure;
PN40 ultra-high pressure bearing, far exceeding ordinary stainless steel pressure limit;
Broad-spectrum acid and alkali corrosion resistance, better than 316L stainless steel;
High shear strength socket, anti-breakage under high-pressure medium impact;
Low thermal expansion coefficient, stable size under high temperature and high pressure;
Cost-effective substitute for super duplex 2507 flange.
Duplex steel phase stabilization heat treatment customization
PN40/PN63 ultra-high pressure structural reinforcement;
Heavy corrosion medium special anti-corrosion lining customization;
High-pressure explosion-proof sealing surface precision processing;
Duplex steel exclusive laser marking and parameter engraving;
Non-standard high-pressure small-bore size one-to-one customization;
Heavy industrial shock-proof and pressure-resistant packaging;
Customized third-party duplex metallographic test report.
FAQ:
1:Who Are We?
We are a comprehensive industrial and trading supplier integrating R&D, production, sales and import & export services, specializing in stainless steel valves and flanges.
2:How Do We Guarantee Quality?
All products are manufactured in compliance with international and domestic standards including ASME, DIN and GB, and undergo rigorous material composition testing, dimensional inspection, as well as hydrostatic and air pressure testing.
3:Are You a Trading Company or Manufacturer?
We are a professional manufacturer.
4:What Services Can We Offer?
We provide flexible OEM & ODM customization services. We can fabricate products of various specifications, pressure classes and connection types in accordance with customers’ drawings, project requirements or special working conditions.
5:Why Choose Us Over Other Suppliers?
We have built a mature global supply chain system featuring consistent stable quality, competitive direct factory prices, fast lead times and full-spectrum import and export services.
Q: Can 316L SW flange replace 2205 for high-pressure chemical pipes?
A: No, 316L is prone to stress cracking under high-pressure corrosion, while 2205 duplex steel ensures long-term stable operation.