AS4087 Flanges Manufacturer & Supplier In India

AS4087 Flange Dimensions and Pressure Ratings

Bolt patterns and diameters follow fixed values under AS4087 flange dimensions. A PN14 flange, for example, measures 95mm across the face, carries a 67mm bolt circle, and takes four M12 bolts through 14mm holes. Move up to an AS4087 flange rated PN35, and both the bolt circle and hole count increase to handle higher line pressure. Tesco Steel & Engineering supplies both configurations, along with intermediate sizes across the DN50 to DN1200 range.

Sealing performance depends on matching the correct pressure class to actual line conditions. Wastewater systems running near atmospheric pressure rarely need a PN35 rating. High-pressure transfer lines do. We stock AS4087 flanges in stainless steel and supply mill test certificates with every batch, so specification checks happen before installation, not after.

Heat exchangers and condensers add another layer of demand: repeated thermal cycling stresses a flange joint far more than a static wastewater line. Stainless steel construction under AS4087 resists that fatigue while keeping bolt loads within the values fixed by each PN class.

Contact Tesco Steel & Engineering for AS4087 flange pricing and current stock across all pressure classes.

Standard Specification for AS4087 Flanges

Specifications

AS 4087 Flanges

Standards

ANSI/ASME B16.5, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges.

Size Range

1/2" (15 NB) to 48" (1200NB) DN10~DN5000

DIN Standards

6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64

ANSI Standards

Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS

EN Standards

6Bar 10Bar 16Bar 25Bar 40Bar

Types of AS4087 Flanges

AS4087 Slip-On Flanges

SS AS4087 Flanges, AS4087 Slip-On Flanges Flanges Manufacturer & Supplier In India.

AS4087 Weld Neck Flanges

SS AS4087 Weld Neck Flanges, AS4087 Weld Neck Flanges Manufacturer & Supplier In India.

AS4087 Blind Flanges

AS4087 Blind Flanges Stainless Steel, AS4087 Blind Flanges Alloy Steel, AS4087 Blind Flanges Manufacturer & Supplier In India.

AS4087 Threaded Flanges

AS4087 Threaded Flanges Manufacturer, AS4087 Stainless Steel Threaded Flanges, AS4087 Threaded Flange Manufacturer & Supplier In India.

Standard AS 4087 PN 35 Slip On Flange Dimensions

NOMINAL PIPE SIZE		FLANGE OUTSIDE DIAMETER	THICKNESS OF DIAMETER	DRILLING DATA
				PITCH CIRCLE DIAMETER	BOLT HOLE DIAMETER	NUMBER OF BOLT HOLES
				PITCH CIRCLE DIAMETER	BOLT HOLE DIAMETER	NUMBER OF BOLT HOLES
MM	INCH	OD	T	PCD	H
50	2	165	19	127	18	4
65	2 1/2	185	19	146	18	8
80	3	205	24	165	18	8
100	4	230	24	191	18	8
150	6	305	31	260	22	12
200	8	370	31	324	22	12
225	9	405	38	356	26	12
250	10	430	38	381	26	12
300	12	490	38	438	26	16
350	14	550	48	495	30	16
375	15	580	48	521	30	16
400	16	610	48	552	30	20
450	18	675	58	610	33	20
500	20	735	58	673	33	24
600	24	850	68	781	36	24
700	28	935	78	857	36	24
750	30	1015	78	940	36	28
800	32	1060	84	984	36	28
900	36	1185	94	1105	39	32
1000	40	1275	98	1194	39	36
1200	48	1530	108	1441	42	40

AS4087 Flanges Available Types

AS4087 Weld Neck Flanges
AS4087 Slip-On Flanges
AS4087 Blind Flanges
AS4087 Socket Weld Flanges

AS4087 Threaded Flanges
AS4087 Lap Joint Flanges
AS4087 Forged Flanges

AS4087 Flanges FAQ

What are AS4087 flanges used for?

Water and wastewater pipelines use AS4087 flanges to join pipe sections, valves, and fittings under controlled pressure ratings from PN16 to PN35.

What are the standard AS4087 flange dimensions?

Dimensions scale with pressure class and bore size. A PN14 flange runs 95mm in diameter with a 67mm bolt circle and four M12 bolts, while higher classes carry larger bolt circles and more fasteners.

Is there a difference between AS4087 and AS 4087 flanges?

No. Both terms describe the same Australian standard; the spacing is a formatting variation, not a separate specification.

How do I select the right AS4087 flange for my piping system?

Match the pipe's operating pressure to the correct PN class first, then confirm bore size and bolt pattern against the pipe schedule already installed.

Which pressure ratings are available for AS4087 flanges?

Tesco Steel & Engineering supplies PN16, PN21, and PN35 classes in slip-on and blind styles across the full DN50 to DN1200 range.

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