304/316/316L Stainless Flange | PN16 / Class 150 Enquiry
For industrial sourcing
Prepare a clearer RFQ
Include the details below so RELIA can understand the part and discuss the next step with you.
- Drawing, sample, or reference standard
- Material grade and preferred process
- Dimensions, tolerances, and surface finish
- Application, target quantity, and destination
Production timing, packing, and shipping terms are confirmed for each project after specifications and trade terms are agreed.
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warranty1 yearcustomized supportOEM, ODM, OBM
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model numberflange 4103TechnicForged
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ConnectivityFlangeshapeEqual
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head codeHexagonSurface TreatmentSmooth
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Mounting hole diameter0.25 inPipe Class150
This stainless-steel flange enquiry includes 304, 316 and 316L grade references alongside PN16 and Class 150 requirements. Define one intended configuration before choosing from the general size and material options. The selected standard, construction and mating dimensions need to identify the same flange and assembly, with material records linked to that item.
Choose one standard and pressure designation
Clarify the complete governing standard and edition behind the general ANSI reference. State whether the project needs PN16 or Class 150 within the applicable specification and request its dimensional and material-dependent rating evidence. These labels do not establish interchangeable flange patterns or one universal operating pressure. Confirm the nominal size and pressure designation together before checking the mating component.
Define the plate flange assembly
For a plate-flange requirement, request a drawing showing the bore, thickness, sealing face, bolt circle and all hole dimensions. Identify any separate pipe-end component and explain how it belongs in the proposed assembly. Give pipe outside diameter, wall and joining details where relevant. Clarify what the millimetre size option measures rather than treating it as a complete flange specification. Generic head-code or mounting-hole fields cannot replace a full mating-interface drawing.
Select a traceable grade for the duty
Choose the exact stainless grade and its material specification instead of treating 304, 316 and 316L as interchangeable labels. Carbon-steel alternatives require their own grade assessment. Obtain traceable material, manufacturing and inspection records for the selected item, including evidence for a forged requirement when applicable. Provide the fluid, operating pressure and temperature plus sealing and assembly requirements so the complete joint can be reviewed. A smooth surface does not establish grade, production route or qualified service.
Technical information for every product inquiry
Prepare the requirement before final product confirmation.
The product page is a starting point. Drawings, samples, interfaces, materials, quantities and acceptance requirements are reviewed before stock matching or custom production is confirmed.
Discuss this product in your project context.
Share the available drawing, sample, reference, target quantity and application information. Unknown items can remain open for review.
