Plate Raised Face Flange
We manufacture plate raised face flanges for industrial piping systems, supplying custom sizes and specifications according to customer drawings and applicable GB, ASME, JIS and DIN standards. Our stainless steel plate flanges are available in grades including 316L, 304L, 321/321H, 310S, 317L, 304H, 347H, 904L and Duplex 2205, subject to project requirements. Manufacturing options include hot forging and precision machining of the sealing face, bore and bolt holes. Sizes range from 3/8" to 32" (DN10–DN800), with pressure ratings selected according to the applicable standard and project specifications. These flanges are intended for suitable general piping applications, with material, dimensions and ratings confirmed for each order.
Specifications
| Parameter | Specification |
|---|---|
| Material | 317L, 310S, 304H, 347H, Duplex 2205, 321/321H, 904L/304L, 316L |
| Process | Hot Forging |
| Size Range | 3/8"–32" (DN10–DN800) |
| Standards | GB, ASME, JIS, DIN |
| Pressure Rating | PN1.0MPa, PN1.6MPa, 150LB, 300LB, 10K, 16K |
Production Process
Every step is strictly controlled — from raw material to final shipment.
Applications
Our plate raised face flanges are designed for suitable industrial piping connections, particularly low-pressure and non-critical applications where the flange design meets the required operating conditions.
Low-Pressure General Piping Connections
Plate raised face flanges provide a practical connection option for general piping systems operating within their specified pressure and temperature limits.
Non-Critical Service Conditions
Their relatively simple design can offer a cost-effective option for non-critical service conditions, subject to applicable design codes and operating requirements.
Connecting Pipes to Valves and Equipment
Plate flanges can connect piping to compatible valves, pumps and other equipment, supporting installation, maintenance and replacement where the design is suitable.
Temporary or Non-Permanent Piping Installations
In suitable systems, plate flanges can be used for piping connections that may require periodic removal or replacement, provided the joint design meets the service requirements.
Quality Control
Each batch of Plate Flanges undergoes the following quality control procedures:
Incoming Material Inspection
Verification of material certificates (chemical composition and mechanical properties); confirmation of material grade per order requirements; visual inspection of forging blanks for surface defects.
Dimensional Inspection
Outer diameter, inner diameter, and thickness measurement; bolt circle diameter and bolt hole positioning inspection; sealing face flatness inspection; bore diameter verification.
In-Process Control
Real-time monitoring of forging temperature during hot forming process; dimensional inspection of sealing face and bore after machining; sealing face surface roughness inspection.
Batch Traceability
Heat number, production date, material test reports, and dimensional inspection records fully archived; all inspection data traceable per batch.
Customization
We provide custom stainless steel plate flange manufacturing according to customer drawings and project specifications, including sealing face machining, bore machining, bolt-hole drilling and product marking.
Hot Forging Forming
Utilizing advanced hot forging equipment for one-step forming of flange blanks, ensuring dense internal structure, uniform grain distribution, and excellent mechanical properties.
Precision Machining of Sealing Face and Bore
Specializing in precision turning of flange sealing faces (RF type) and bore machining, strictly controlling flatness, surface roughness, and bore diameter to ensure proper pipe fit and reliable sealing performance.
Bolt Hole Drilling and Positioning
Professional drilling of bolt holes with strict control of bolt circle diameter and hole positioning accuracy, ensuring precise alignment with matching flanges.
Custom Marking
Supports steel stamp marking per customer requirements, including material grade, pressure rating, size, standard, and heat number for full traceability.
FAQ
Find answers to common questions about our products, services, and support.
What standards do you manufacture Plate Flanges to?
We manufacture plate flanges according to applicable GB, ASME, JIS and DIN standards, as well as customer drawings, subject to the required specifications and manufacturing capabilities.
What is the difference between Plate Flanges and Slip-On Flanges?
Plate flanges generally have a flat plate design, while slip-on flanges typically have a hubless or low-profile design that fits over the pipe and is welded in place. Their suitability depends on the applicable standard, joint design and operating conditions.
What pressure ratings are available for your Plate Flanges?
Available ratings may include PN1.0 MPa, PN1.6 MPa, 150 LB, 300 LB, 10K and 16K, subject to the applicable standard, size, material and design requirements.
Are Plate Flanges suitable for high-pressure applications?
Suitability depends on the flange standard, material, dimensions, pressure-temperature rating and service conditions. For high-pressure applications, the flange type should be selected and verified against the relevant design requirements. Weld neck flanges may be considered where appropriate.