IS 6392 Flanges | Indian Standard | PN Series

IS 6392 flanges are standard steel pipe flanges used to connect pipes, valves, pumps, and equipment across industrial piping systems. The standard matters because it sets the dimensions, pressure ratings, materials, and manufacturing rules that keep flange connections safe and reliable. You will find these flanges in oil and gas, water treatment, steam lines, air systems, chemical processing, and general industrial piping, anywhere leak-free joints and mechanical strength are non-negotiable. PM Industries manufactures, supplies, and stocks them in a wide range of types, sizes, and grades.

IS 6392 covers several flange types: integral, welding neck, plate, screwed boss, slip-on boss, loose flanges for welded-on lapped pipe ends, and blank flanges. That spread lets engineers pick the right flange for the pressure, temperature, piping design, and installation in front of them. We make them in carbon steel, stainless steel, alloy steel, and other grades, chosen to suit the service environment and corrosion conditions of the line.

The real strength of IS 6392 flanges is flexibility. They come in a wide range of sizes and pressure classes, so they fit light-duty service and heavy-duty work alike. Matched with the correct gasket, bolting, and machining finish, the design holds a strong, secure joint. Because the dimensions are standardized, replacement, maintenance, and system expansion all get easier down the line. Getting the face type, material, and pressure class right is what delivers safe operation and long service life, and our team will help you confirm all three before you order.

The standard also sets quality requirements for testing, marking, preservation, and packing, which keep the flanges sound through storage, transport, and installation. PM Industries holds stock ready to ship, with certification and test documentation on every order. Tell us your flange type, size, class, face, and material, and we will quote it.

Specification IS 6392 Flanges

Standards	ANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard	5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGES	DIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Types	Threaded, Plate, Screwed, Forged.
Supporting material	Gasket, Ring Joint, Flange Bolts
Size range	1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production technique	Forged, machined and Heat treated
Available Flange Type	Weld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face Type	Ring Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom design	As per your drawing
Test	Direct-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
Origin	Indian / USA / Korean / West Europe / Japan
Pressure Class	PN 6 TO PN 100
Thickness	Normal Pipe Size ≤ 18
Bore Diameter	Normal Pipe ≤ 10
High Temperature	Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature	Above -29 Degree C (−20°F)
Coating/Surface Treatment:	Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard Flanges	Available
Gaskets Types	Full Face, Metallic Ring, Flat Ring Gasket
Marking Standard	Name of Manufacturer
	Schedule
	Type of Flange Facing
	Pressure Class
	Nominal Pipe Size, etc
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
	Raw Materials Certificate
	100% Radiography Test Report
	Third Party Inspection Report, etc

Flange Type Available

Is 6392 Table 17 Flange Dimensions

IS 6392 -- TABLE - 17
Nominal Size	Pipe OD	Flange	Flange Thickness	Raised Face Dia	Raised Face ht	No of holes	Hole dia	PCD
mm	10	17.2	90	14	40	2	4	14	60
mm	15	21.3	95	14	45	2	4	14	65
mm	20	26.9	105	16	58	2	4	14	75
mm	25	33.7	115	16	68	2	4	14	85
mm	32	42.4	140	16	78	2	4	18	100
mm	40	48.3	150	16	88	3	4	18	110
mm	50	60.3	165	18	102	3	4	18	125
mm	65	76.1	185	18	122	3	4	18	145
mm	80	88.9	200	20	138	3	8	18	160
mm	100	114.3	220	20	158	3	8	18	180
mm	125	139.7	250	22	188	3	8	18	210
mm	150	168.3	285	22	212	3	8	22	240
mm	175	193.7	315	24	242	3	8	22	270
mm	200	219.1	340	24	268	3	12	22	295
mm	250	273	405	26	320	3	12	26	355
mm	300	323.9	460	28	378	4	12	26	410
mm	350	355.6	520	32	438	4	16	26	470
mm	400	406.4	580	36	490	4	16	30	525
mm	500	508	715	44	610	4	20	33	650
mm	600	609.6	840	52	725	5	20	36	770
mm	700	711.2	910	58	795	5	24	36	840
mm	800	812.8	1025	64	900	5	24	39	950
mm	900	914.4	1125	72	1000	5	28	39	1050
mm	1000	1016	1255	78	1115	5	28	42	1170
mm	1200	1220	1485	94	1330	5	32	48	1390