Reference scope

Common order references

Standard / Type	Product	Typical scope
Class 1500	High-pressure B16.5 range	Detailed specification required
Class 2500	High-pressure B16.5 range	Detailed specification required

Product data

Dimensions and specification tables

ANSI / ASME B16.5 Class 1500 socket weld flange RF dimensions

NPS	OD in	Thickness in	Bolt circle in	Holes	Hole dia. in	Approx. lb
1/2"	4.75	0.88	3.25	4	0.88	4
3/4"	5.12	1	3.5	4	0.88	5
1"	5.88	1.12	4	4	1	8
1 1/2"	7	1.25	4.88	4	1.12	12
2"	8.5	1.5	6.5	8	1	25
3"	10.5	1.88	8	8	1.25	48
4"	12.25	2.12	9.5	8	1.38	73
6"	15.5	3.25	12.5	12	1.5	165
8"	19	3.62	15.5	12	1.75	260
10"	23	4.25	19	12	2	435
12"	26.5	4.88	22.5	16	2.12	580
16"	32.5	5.75	27.75	16	2.62	Confirm
20"	38.75	7	32.75	16	3.12	Confirm
24"	46	8	39	16	3.62	Confirm

Use these tables for RFQ preparation. Final production should be confirmed against the required standard edition, drawing, material grade and certificate requirement.

Focused pages

Related European flange pages

ASME B16.5 Plate Flange

Plate / ring flange RF or FF inquiries for Class 150, 300 and 600 orders.

ASME B16.5 Weld Neck Flange

WNRF, WNFF and RTJ weld neck flange RFQs for pressure piping projects.

ASME B16.5 Slip On Flange

SORF and SOFF slip-on flange references for European buyers ordering American standard flanges.

ASME B16.5 Blind Flange

Blind / blank flange supply with RF, FF or RTJ facing requirements.

ASME B16.5 Class 150 / 300

Common Class 150 and Class 300 quotation range.

ASME B16.5 Materials

ASTM A105, A350 LF2, A182 stainless steel and certificate notes.

Supply notes

Supply and order notes

Project handling

For Class 1500 and 2500 flanges, our project review links the full specification and available drawing with material, facing and inspection requirements.

Certificate support

We preserve material traceability and prepare EN 10204 3.1 certificates from the heat and production records.

Technical purchasing support

How Hyupshin turns the specification into a controlled flange order.

Dimension control

ANSI / ASME B16.5 production dimensions

Our technical team compares the requested standard edition and project drawing, then releases the applicable dimensions to production.

Pressure and facing

CLASS 1500

We record the Class, RF, FF or RTJ facing, bore or pipe schedule and tolerance notes on each ASME quotation line.

Product geometry

flange type manufacturing details

Flange type, sealing face, drilling, thickness and machining details are checked together so production and inspection use the same specification.

Documents

Certificate and inspection records

Our order file carries the agreed EN 10204 3.1, PED, AD 2000, UKCA, PMI, NDT and third-party inspection scope through to shipment.

Send this product for quotation

Request a quotation for this flange

Send the ASME B16.5 flange type, NPS, Class, facing, bore or pipe schedule, material grade, quantity and certificate requirement.

Send Inquiry

ANSI / ASME B16.5 Class 1500 / 2500 Flanges