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ASTM A182 F304 PN10 RF Slip On Flange GB/T9124 DN15-DN300 Low Pressure Water HVAC Forged SO Flange
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ASTM A182 F304 PN10 RF Slip On Flange GB/T9124 DN15-DN300 Low Pressure Water HVAC Forged SO Flange

Production Standard:CE.ISO9001.ISO45001. ISO14001.ASME B16.5 .GOST.TS2733E31-2022.EN 1092-1, JIS B2220,
Material:Stainless steel:304 .304L, 306.306L,309S,310S,316.316L, 321.F321.347.F347
Precision Dimensions: Our advanced CNC systems handle diameters from DN 15 to DN 4000 with micron-level accuracy.
Availability:
Quantity:
  • SO Flange

  • SDFL

ASTM A182 F304 PN10 RF Slip On Flange GB/T9124 DN15-DN300 Low Pressure Water HVAC Forged SO FlangeASTM A182 F304 PN10 RF Slip On Flange GB/T9124 DN15-DN300 Low Pressure Water HVAC Forged SO FlangeASTM A182 F304 PN10 RF Slip On Flange GB/T9124 DN15-DN300 Low Pressure Water HVAC Forged SO Flange

ASTM A182 F304 PN10 RF Slip-on Flange (short for SO flange) is forged stainless steel pipe fitting designed for general low-pressure piping under 1.0MPa, fully produced to GB/T9124 national standard. Different from plate flat flange, it comes with integrated short hub, allowing double fillet welding inside & outside hub, better rigidity and sealing stability than ordinary plate flangeSongHai Fl.... The pipe slides into hub bore then welded on both sides, greatly reducing pipe deflection and leakage risk for long-term operation.We adopt solid round steel hot forging process, no stamping splicing, uniform metal grain, flat raised face (RF) precision CNC lathed, smooth finish to match rubber, PTFE non-metal gaskets. Raw material is genuine F304 austenitic stainless steel, excellent resistance to atmospheric rust, fresh water and mild neutral fluid corrosion, suitable for indoor and outdoor general industrial environments. Size range DN15~DN300, all regular sizes stocked for fast delivery. After pickling & passivation treatment, a dense anti-corrosion film forms on surface to extend service life.

Core Selling Points

  1. PN10 low pressure rating, perfect match 1.0MPa municipal water, factory circulating water system

  2. Integral forged short hub, double-side welding structure, higher structural stiffness than plate flange

  3. Genuine ASTM A182 F304 stainless steel, outstanding anti-rust & neutral fluid corrosion performance

  4. CNC precision machined bolt holes & sealing face, zero assembly deviation, stable leak-free sealing

  5. DN15-DN300 full sizes in stock, support mixed batch & urgent order shipment within 7 days

  6. Hot forging forming, no internal porosity, passed PMI material test & hydraulic leakage test before delivery

  7. Simple slip-on installation, lower construction labor cost than butt weld flange

Applicable Industries

Municipal water supply & drainage, factory cooling circulating water, commercial HVAC air conditioning, fire protection low-pressure pipeline, food factory clean water piping, general workshop compressed air system

Why Choose Us

We are 12-year professional stainless steel flange forging factory, equipped with full auto forging line, CNC turning & drilling workshop. Independent PMI spectral inspection lab, every batch full material test to eliminate recycled scrap steel. All SO flanges comply with GB/EN/ANSI multi standards, complete ISO9001 certification & export customs clearance documents. Support SGS/BV/TUV third-party inspection, flexible MOQ: 1pc sample acceptable, bulk full-container order priority production. Dual production workshops realize synchronous loading & double capacity guarantee to avoid delivery delay.

Customization Capabilities (8 Items)

  1. Non-standard OD, hub height, thickness & bolt hole pitch custom machining

  2. Multiple sealing face options: RF/FF/MFM/TG ring joint surface

  3. Surface finish: pickling passivation, mirror electrolytic polishing, anti-rust oil coating

  4. Pressure grade upgrade: PN6/PN10/PN16 multi pressure conversion customization

  5. Laser engraving customer LOGO, standard mark, project code & material grade on flange face

  6. Thickened hub & flange body reinforcement for improved pressure resistance

  7. Export fumigated wooden case, pallet, plastic film anti-rust packaging customization

  8. Pre-shipment full dimension, hydraulic leakage & material inspection report service

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.

6: What’s the difference between slip-on flange and plate flange?

Slip-on flange has integrated short hub with double internal & external weld, stronger rigidity, less deformation under medium pressure; plate flange only single outside weld, only fit ultra-low pressure large diameter pipeline.


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