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Item specifications	Applicable standard, dimensions, pressure rating, material and quantity
Attachments	Drawings, product photos, item list or request for quotation
General requirements	Preferred delivery date, inspection and test report requirements

TECHNICAL RESOURCES

ASME B16.5 flange dimensions

Browse flange drawings and dimensions by class, from Class 150 to Class 2500, plus welding ends, flange faces and tolerances.

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CLASS 150 FLANGES

CLASS 150 FLANGES · Download dimension sheet

ASME B16.5 Class 150 · Welding neck (WN) · Dimensions in mm
NPS	Outside diameter D	Min. thickness t	Length through hub T1	Bolt circle C	Bolt holes (qty)	Hole diameter H
1/2	90	9.6	46	60.3	4	15.9
3/4	100	11.2	51	69.9	4	15.9
1	110	12.7	54	79.4	4	15.9
1 1/4	115	14.3	56	88.9	4	15.9
1 1/2	125	15.9	60	98.4	4	15.9
2	150	17.5	62	120.7	4	19.1
2 1/2	180	20.7	68	139.7	4	19.1
3	190	22.3	68	152.4	4	19.1
3 1/2	215	22.3	70	177.8	8	19.1
4	230	22.3	75	190.5	8	19.1
5	255	22.3	87	215.9	8	22.2
6	280	23.9	87	241.3	8	22.2
8	345	27	100	298.5	8	22.2
10	405	28.6	100	362	12	25.4
12	485	30.2	113	431.8	12	25.4
14	535	33.4	125	476.3	12	28.6
16	595	35	125	539.8	16	28.6
18	635	38.1	138	577.9	16	31.8
20	700	41.3	143	635	20	31.8
24	815	46.1	151	749.3	20	34.9

TAEWON FLANGE online catalogue · ASME B16.5, Class 150, sheets 1–2.

Check the standard and edition shown in the document. Tell us the nominal size, pressure rating, material and quantity so we can confirm the applicable specifications and availability.

QUALITY POLICY

Quality policy

Three principles guide how we manufacture and supply flanges.

Customer requirements

We review customer requirements for each product and use feedback to improve work on the shop floor.

Continuous quality improvement

We use problems identified during production to improve our working methods and quality management system.

Compliance with standards

We base our quality checks on the applicable product standards and the drawings specified by the customer.

Quality and product certifications

ISO 9001 quality management system · KS B 1506 flange product certification · KC hygiene and safety standards

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02 · ITEMS

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No.	Standard	Pressure rating	Flange type	Facing	Size	SCH	Material	Origin	Quantity	Notes / requests

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Industrial connections start with a flange.

Flange manufacturer and distributor TAEWON FLANGE

Products

Flange dimension tables

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Products

Details to include in your quote request

ASME B16.5 flange dimensions

CLASS 150 FLANGES

CLASS 300 FLANGES

CLASS 400 FLANGES

CLASS 600 FLANGES

CLASS 900 FLANGES

CLASS 1500 FLANGES

CLASS 2500 FLANGES

WELDING ENDS

STANDFINISH

FLANGE FACES

TOLERANCE

Nominal wall thickness (SCH)

We manufacture and supply flanges for industrial facilities.

Welcome to TAEWON FLANGE.

Company profile

Our history

TAEWON FLANGE founded

First forged flange deliveries

Expanded customer base

Incorporation

Added machining equipment

Research and development center

Obtained KS B 1506 certification

Obtained KC certification

Registered as a vendor with BASF Company Ltd. (Korea)

Certificates

KS B 1506

ISO 9001

KC

Factory photos & videos

Machining videos

Finished products

Machining equipment 6 machines

01 DOOSAN VC 510

02 DOOSAN VC 510

03 PUMA GT2100B

04 DOOSAN PUMA V400

05 DOOSAN PUMA V400

06 DOOSAN PUMA TW 2600

Directions

TAEWON FLANGE Co., Ltd.

Please call before visiting.

Quality policy

Customer requirements

Continuous quality improvement

Compliance with standards

Quality and product certifications

Request a quote for multiple items at once.

Who is requesting the quote?

Items to quote 0 items

Drawings and general requirements

Review your quote request

Industrial connections
start with a flange.

Flange manufacturer and distributor
TAEWON FLANGE

Request a quote
for multiple items at once.

We manufacture and supply
flanges for industrial facilities.

Request a quote
for multiple items at once.