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Flanges

Industrial Flanges

Flange requirements should be specified by flange type, nominal size, material/grade, pressure class, facing and applicable standard.

Stainless Steel & High-Nickel Alloy Flange Grades

Specify SS 304, SS 316, SS 310, SS 904L, HASTELLOY, Alloy 20, MONEL or INCONEL in your flange enquiry. Include the exact grade or UNS designation, flange size, pressure class, facing, quantity and required material test certificate.

Flange material-grade reference for quotation
Material category Grade / alloy Technical designation to confirm
Stainless steel SS 304 / 304L For forged flange enquiries: ASTM A182 F304 / F304L where required by the project. State the exact grade, not just SS.
Stainless steel SS 316 / 316L For forged flange enquiries: ASTM A182 F316 / F316L where required. 316 and 316L are separate designations.
Heat-resistant stainless steel SS 310 / 310S Specify 310 or 310S separately. Confirm the applicable product specification, heat treatment and design temperature; no automatic substitution.
High-alloy austenitic stainless steel SS 904L 904L is stainless steel with high nickel and molybdenum content, not an INCONEL or MONEL grade. Specify the applicable product standard and certificate requirement.
Nickel-alloy family HASTELLOY® State the exact alloy: e.g. C-276 (UNS N10276) or C-22 (UNS N06022). Family name alone is insufficient; examples are not a stock declaration.
High-nickel austenitic alloy Alloy 20 (UNS N08020) Specify Alloy 20 and the applicable product form/specification. Do not treat it as equivalent to 904L or 316L.
Nickel-copper alloy family MONEL® State the exact alloy, e.g. MONEL 400 (UNS N04400), with product specification. Other MONEL grades must be identified separately.
Nickel-alloy family INCONEL® State the exact alloy, e.g. INCONEL 600 (UNS N06600) or INCONEL 625 (UNS N06625). These are different grades, not interchangeable.

Supply availability, manufacturing route, applicable material specification and suitability for the selected flange configuration are confirmed during technical review. This table is not a claim that every grade is stocked in every flange type. Dimensional standards such as ASME B16.5 do not by themselves define material grade or approve service conditions.

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Material naming references

904L stainless steel · HASTELLOY alloy designations · Alloy 20 · MONEL alloy designations · INCONEL alloy designations. External references establish naming only, not Shri Parvati inventory, affiliation or certification.

Flange Product Pages

Flange Dimensional Tables – mm

Flange drilling dimensions and DIN long neck geometry are shown in millimetres. Flange facing definitions are included for technical reference.

View Flange Tables (mm)

Confirm grade, pressure class, flange type, facing and final dimensions against the applicable standard and approved drawing.

Download Flange Tables PDF (mm)

Dimensions are in mm. Confirm final dimensions against the applicable standard and approved project drawing.

Flange Types

Explore the 12 individual flange product pages above. Each page includes the product image, technical selection checklist, application context and quotation link.

Pressure & Facing

Capture class/pressure rating and facing details only where applicable to the selected product and source specification.

Standards & Dimensions

Show ASME, ANSI, DIN, EN, BS or JIS information only when supported by the product specification.

Technical rule: Dimensions, drilling, facing, pressure class and material data will be populated from approved product documentation rather than assumptions.

Flange Standards & Specifications: IS 6392, ASTM & ASME

For steel pipe flanges in India, specify the flange dimensional standard and material specification separately. IS 6392, ASTM A105/A105M, ASTM A182/A182M and ASME B16.5/B16.47 address different aspects of flange selection.

Flange standards reference
Standard Scope Specification to confirm
IS 6392:2020 Steel pipe flanges — Indian Standard Flange type, nominal size, class designation, material and applicable dimensions.
ASTM A105/A105M Carbon-steel forgings for piping components, including flanges Material specification, heat treatment and required material testing; dimensions are specified separately.
ASTM A182/A182M Forged or rolled alloy-steel and stainless-steel flanges and other piping components Exact material grade, heat treatment and testing; not a flange dimensional standard.
ASME B16.5 Pipe flanges and flanged fittings: NPS 1/2 through NPS 24 Applicable flange type, size/class limits, dimensions, facing and pressure-temperature rating.
ASME B16.47 Large-diameter steel flanges: NPS 26 through NPS 60 Series A or B, flange type, class, facing and drilling dimensions.
Flange enquiry specification table
Parameter Details to include
Type & size Required flange type, DN or NPS, matching pipe outside diameter and bore or pipe schedule.
Material Applicable ASTM or IS material designation and exact grade; specify required heat treatment.
Rating & service Pressure class or applicable rating designation; design pressure, temperature and service medium. Class numbers are not direct pressure values.
Facing & gasket RF, FF or RTJ where supported by the selected standard; facing finish and gasket compatibility.
Dimensions & drilling Outside diameter, thickness, bolt circle, hole count/diameter and bore from the applicable standard table or approved drawing.
Inspection & documents Required dimensional/material tests, marking, traceability and material test certificate; confirm availability.
Certification & order Applicable standard edition, BIS licence/product scope where required, quantity and delivery requirement.

IS standards are published by the Bureau of Indian Standards (BIS). ASTM and ASME are international standards used in project specifications. A standard reference does not by itself establish BIS/ISI certification or product conformity. Specify the applicable part and edition in your enquiry; product conformity, certification scope and supply availability require confirmation against the order documentation.

Pressure-temperature ratings depend on material, temperature, size and the selected standard. Confirm the complete flange specification before ordering.

Reference sources: BIS IS 6392 product manual, ASTM A105/A105M scope, ASTM A182/A182M scope, ASME B16.5 and ASME B16.47. Use the edition specified for your project.

Related Products & Bolting References

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