GB/T9119 F304 PN10 RF Plate Flange is a conventional low-pressure flat weld pipe connecting fitting, widely used in general industrial and municipal pipeline systems with working pressure below 1.0MPa. Different from socket weld and butt weld flanges, the plate flat weld structure features simple on-site assembly, low welding difficulty and excellent cost performance, being the most mainstream connecting solution for conventional medium and large-diameter pipelines. This product adopts loose flat weld design, suitable for straight pipe external welding fixation, with uniform stress distribution and stable long-term operation.
Manufactured from virgin ASTM A182 F304 austenitic stainless steel, the product undergoes integral stamping and finishing process with flat and smooth flange surface, uniform thickness and no deformation. Precision CNC drilling ensures standard bolt hole spacing, realizing seamless docking of pipeline equipment. After professional pickling and passivation treatment, the surface forms a dense anti-corrosion layer, which can resist atmospheric oxidation and mild water medium erosion, meeting the long-term service requirements of general industrial environments. The RF raised sealing surface is finely polished to match conventional rubber and PTFE gaskets for reliable sealing.
Core Selling Points
Standard PN10 low-pressure rating, perfectly adapted to 1.0MPa and below conventional pipeline working conditions;
2. Plate flat weld integrated structure, simple on-site welding and installation, low construction cost;
3. F304 genuine stainless steel material, excellent atmospheric corrosion and rust resistance;
4. Precision hole position calibration, high docking accuracy, no assembly deviation;
5. Flat and smooth sealing surface, stable sealing performance with various conventional gaskets;
6. Full-size in stock from DN25 to DN200, fast delivery for municipal and general industrial projects;
7. Uniform overall thickness, stable stress bearing, not easy to deform after long-term use.
Full Available Materials: F304, F304L, F316, F316L, F321, S32205, 904L
Applicable Industries: Municipal water supply and drainage systems, factory general circulating water pipelines, indoor air supply pipelines, ordinary HVAC systems, light industrial fluid piping
Why Choose Us
We are a professional stainless steel plate flange manufacturer with 12 years of forging and stamping experience. Equipped with full-automatic stamping forming and CNC finishing production lines, we ensure flatness and dimensional accuracy of each flange. Independent PMI spectral testing laboratory conducts full-batch material inspection to eliminate recycled materials. All products comply with GB/T9119 national standard, with complete ISO9001 quality certification and export documents. Support SGS/BV/TUV third-party inspection, flexible MOQ, and provide one-stop supporting services for municipal and industrial pipeline projects.
Customization Capabilities (8 Items)
Non-standard diameter, thickness and bolt hole spacing customization;
2. Multi-type sealing surface processing: RF/FF/MFM/TG;
3. Surface treatment: pickling passivation, electrolytic polishing, anti-rust oil coating;
4. Low-pressure non-standard pressure grade and structural reinforcement customization;
5. Laser engraving customer LOGO, standard mark and project number;
6. Thickened plate body customization for improved structural stability;
7. Export fumigation wooden box and pallet packaging customization;
8. Pre-shipment full-size and material inspection service.
FAQ:
GB/T9119 F304 PN10 RF Plate Flange is a conventional low-pressure flat weld pipe connecting fitting, widely used in general industrial and municipal pipeline systems with working pressure below 1.0MPa. Different from socket weld and butt weld flanges, the plate flat weld structure features simple on-site assembly, low welding difficulty and excellent cost performance, being the most mainstream connecting solution for conventional medium and large-diameter pipelines. This product adopts loose flat weld design, suitable for straight pipe external welding fixation, with uniform stress distribution and stable long-term operation.
Manufactured from virgin ASTM A182 F304 austenitic stainless steel, the product undergoes integral stamping and finishing process with flat and smooth flange surface, uniform thickness and no deformation. Precision CNC drilling ensures standard bolt hole spacing, realizing seamless docking of pipeline equipment. After professional pickling and passivation treatment, the surface forms a dense anti-corrosion layer, which can resist atmospheric oxidation and mild water medium erosion, meeting the long-term service requirements of general industrial environments. The RF raised sealing surface is finely polished to match conventional rubber and PTFE gaskets for reliable sealing.
Core Selling Points
1. Standard PN10 low-pressure rating, perfectly adapted to 1.0MPa and below conventional pipeline working conditions; 2. Plate flat weld integrated structure, simple on-site welding and installation, low construction cost; 3. F304 genuine stainless steel material, excellent atmospheric corrosion and rust resistance; 4. Precision hole position calibration, high docking accuracy, no assembly deviation; 5. Flat and smooth sealing surface, stable sealing performance with various conventional gaskets; 6. Full-size in stock from DN25 to DN200, fast delivery for municipal and general industrial projects; 7. Uniform overall thickness, stable stress bearing, not easy to deform after long-term use.
Full Available Materials: F304, F304L, F316, F316L, F321, S32205, 904L
Applicable Industries: Municipal water supply and drainage systems, factory general circulating water pipelines, indoor air supply pipelines, ordinary HVAC systems, light industrial fluid piping
Why Choose Us
We are a professional stainless steel plate flange manufacturer with 12 years of forging and stamping experience. Equipped with full-automatic stamping forming and CNC finishing production lines, we ensure flatness and dimensional accuracy of each flange. Independent PMI spectral testing laboratory conducts full-batch material inspection to eliminate recycled materials. All products comply with GB/T9119 national standard, with complete ISO9001 quality certification and export documents. Support SGS/BV/TUV third-party inspection, flexible MOQ, and provide one-stop supporting services for municipal and industrial pipeline projects.
Customization Capabilities (8 Items)
1. Non-standard diameter, thickness and bolt hole spacing customization; 2. Multi-type sealing surface processing: RF/FF/MFM/TG; 3. Surface treatment: pickling passivation, electrolytic polishing, anti-rust oil coating; 4. Low-pressure non-standard pressure grade and structural reinforcement customization; 5. Laser engraving customer LOGO, standard mark and project number; 6. Thickened plate body customization for improved structural stability; 7. Export fumigation wooden box and pallet packaging customization; 8. Pre-shipment full-size and material inspection 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 is the difference between plate flange and socket weld flange?
A: Plate flat weld flange is suitable for medium and large-diameter low-pressure pipelines with simple installation and low cost, while socket weld flange is more suitable for small-diameter medium and high-pressure precise pipelines.
