What makes high-temperature 304H flanges different from regular stainless steel flanges?

High-temperature SS 304H flanges are engineered with a higher carbon content, giving them better strength and stability at elevated temperatures. Unlike regular stainless steel flanges, they perform exceptionally well in boilers, heat exchangers, and high-pressure pipelines used across UAE industries.

Are ASTM A182 304H flange options suitable for oil and gas projects in the UAE?

Yes, ASTM A182 304H flange types are widely preferred in UAE oil & gas plants because they handle extreme heat, corrosion, and fluctuating pressure. Their durability makes them ideal for refineries, petrochemical units, and offshore applications where reliability is critical.

Where can I find a trusted supplier for stainless steel 304H flanges in Dubai?

If you're sourcing in Dubai, you can easily find a top stainless steel 304H flange supplier or a SS 304H flanges stockist Dubai offering ready stock, wholesale prices, and mill test certificates. Many Dubai-based suppliers also ship to Abu Dhabi, Sharjah, Ajman, and Ras Al Khaimah.

What types of 304H stainless steel flanges are commonly used in UAE construction and industrial projects?

UAE industries use a wide range of 304H stainless steel flanges, including weld neck, slip-on, blind, and socket-weld types. These flanges are available in 150 / 300 / 600 lbs pressure ratings and are frequently used for construction, petrochemical handling, power plants, and heavy-duty pipelines.

How can I estimate the price of 304H flanges for my project in the UAE?

The SS 304H flange price UAE depends on size, pressure rating, type, and quantity. Prices vary between suppliers, especially if you're buying through wholesale SS 304H flanges UAE distributors or a Dubai-based supplier for SS 304H flanges with ready stock and faster delivery.

SS 304H Flanges Supplier in UAE | Weld Neck Flanges Dubai

If you’re looking for SS 304H flanges that deliver strength, heat resistance, and long-term durability, you’re in the right place. SS 304H is a high-carbon stainless steel grade engineered for demanding industries such as oil & gas, petrochemicals, construction, marine operations, and power plants. In the UAE’s harsh climate and heavy industrial environments, these flanges perform exceptionally well due to their ability to withstand high temperatures, pressure variations, and continuous operational stress.

Whether you need Stainless Steel 304H flanges, ASTM A182 304H flange, or 304H stainless steel flanges for your ongoing projects in Dubai, Abu Dhabi, Sharjah, Ajman, or Ras Al Khaimah — this guide helps you understand everything before making the right purchase decision.

What Makes SS 304H Flanges Unique?

SS 304H flanges are designed using high-carbon stainless steel, making them stronger and more heat-resistant than standard 304 flanges. This enhanced carbon content improves elevated temperature performance — a critical advantage for industries running boilers, heat exchangers, high-pressure pipelines, and furnace systems.

Key performance attributes include:

Excellent high-temperature strength
Reliable corrosion and oxidation resistance
Superior mechanical properties
Long service life under heavy industrial loads

These qualities make ASTM A182 F304H flanges a top choice for engineers and procurement teams across the UAE.

Types of SS 304H Flanges Available in UAE

To support different industrial applications, SS 304H flanges come in a wide selection of types:

SS 304H Weld Neck Flanges – Ideal for high-pressure and high-temperature pipelines
SS 304H Slip-On Flanges – Easy to install, commonly used in low- to medium-pressure systems
SS 304H Blind Flanges – Perfect for closing pipeline ends safely
SS 304H Socket Weld Flanges – Strong connection for small-diameter, high-pressure pipes
ASTM A182 304H Forged Flanges – Enhanced strength for critical operations

Each type is available in pressure ratings of 150 / 300 / 600 lbs, depending on your process requirement.

Why UAE Industries Prefer 304H Flanges

The UAE’s industrial sectors demand strong, reliable, and heat-resistant components. High-temperature 304H flanges and heat-resistant stainless steel 304H flanges are widely used because they offer:

High-temperature tolerance — suitable for refineries and power plants
Durability in marine and saline conditions
Reliable resistance to corrosion and scaling
Low maintenance costs

Major users include:

Oil & Gas pipelines
Petrochemical processing plants
Construction and infrastructure
Marine engineering
Heavy industrial fabrication

If your application involves extreme heat or pressure, SS 304H flanges for oil & gas UAE and petrochemical grade 304H flanges UAE are engineered to perform flawlessly.

Where to Buy SS 304H Flanges in UAE

Finding the right supplier is crucial. As demand continues to rise, more buyers search for the best supplier of SS 304H flanges UAE and trusted dealers like KVN Steels offering premium-grade products.

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Dubai-based supplier for SS 304H flanges

Whether you're sourcing for a refinery in Abu Dhabi, a fabrication unit in Sharjah, a marine project in Ras Al Khaimah, or a construction site in Ajman — local UAE suppliers provide ready stock, fast delivery, and mill test certificates.

Our regional presence include:

SS 304H flanges Abu Dhabi
SS 304H flanges Sharjah
SS 304H flanges Ajman
SS 304H flanges Ras Al Khaimah

Choosing the Right Grade & Specification

When selecting 304H stainless steel flanges, engineers usually check:

Material grade: ASTM A182 F304H
Pressure class: 150 / 300 / 600 lbs
End connection type: Weld neck, slip-on, blind, socket weld
Size & schedule thickness (SCH 40, SCH 80)
Temperature range & application type

For high-stress environments, high-temperature and forged SS 304H flanges are often recommended.

SS 304H Flange Price in UAE

The SS 304H flange price UAE depends on size, type, pressure rating, and quantity. Typically, prices vary due to:

Raw material cost
Production standards
Import duty & logistics
Thickness and forging quality

Whether your priority is heat resistance, durability, or long-term performance, SS 304H flanges remain a top choice for industrial operations across the UAE. By choosing a trusted supplier, understanding your required specifications, and evaluating the right flange type, you ensure safety, efficiency, and reliability across every pipeline system.

304/304L/304H Flanges Equivalent Grades

STANDARD	UNS	WNR.	AFNOR	EN	JIS	BS	GOST
SS 304	S30400	1.4301	Z7CN18‐09	X5CrNi18-10	SUS 304	304S31	08Х18Н10
SS 304L	S30403	1.4306/1.4307	Z3CN18‐10	X2CrNi18-9 / X2CrNi19-11	SUS 304L	304S11	03Х18Н11
SS 304H	S30409	1.4301	-	-	-	-	-

SS 304/304L/304H Slip On Flanges

ASME SA213 SS 304L /304H Seamless Tube, ASTM A213 SS 304 Seamless Tubing, DIN 1.4301 / 1.4307 Seamless Tubes, UNS S30403 / S30409 Seamless Tube

SS 304/304L/304H Weld Neck Flanges

SS 304 Seamless Pipes, UNS S30400 / S30403 / S30409 Seamless Pipes, DIN 1.4301 Seamless Pipes, ASME SA 312 SS TP304H Seamless Piping

SS 304/304L/304H Blind Flanges

ASME SA213 SS 304L /304H Seamless Tube, ASTM A213 Stainless Steel 304 Seamless Tubing, DIN 1.4301 / 1.4307 Seamless Tubes, UNS S30403 / S30409 Seamless Tube

SS 304/304L/304H Threaded Flanges

DIN 1.4301 Welded Tubing, UNS S30400 Welded Tube, ASME SA 213 Stainless Steel 304L Welded Tubes, ASTM A213 304H SS Welded Tubes

SS 304/304L/304H Socket Weld Flanges

ASME SA358 304 SS EFW Pipes, ASTM A358 TP304H Stainless Steel EFW Pipe, SS UNS S30400/ S30403/ S30409 EFW Pipes, SS DIN 1.4301 / 1.4306 EFW Pipes

SS 304/304L/304H Lap Joint Flanges

UNS S30400 ERW Pipes, Stainless Steel 304 ERW Tubing, ASTM A213 TP304L Stainless Steel ERW Tubes, ASME SA 312 SS 304H Pipe

SS 304/304L/304H Ring Type Joint Flange

ASME SA358 304 SS EFW Pipes, ASTM A358 TP304H Stainless Steel EFW Pipe, SS UNS S30400/ S30403/ S30409 EFW Pipes, SS DIN 1.4301 / 1.4306 EFW Pipes

SS 304/304L/304H Orifice Flanges

UNS S30400 ERW Pipes, Stainless Steel 304 ERW Tubing, ASTM A213 TP304L Stainless Steel ERW Tubes, ASME SA 312 SS 304H Pipe

SS 304/304L/304H Long Weld Neck Flanges

UNS S30409 Long Weld Neck Flanges, Stainless Steel 1.4307 Long Weld Neck Flanges, ASTM A182 F304L Stainless Steel Long Weld Neck Flanges, ASME SA 182 SS 304H Long Weld Neck Flanges

SS 304/304L/304H Spectacle Blind Flanges

UNS S30403 Spectacle Blind Flanges, ANSI / ASME B16.5 Stainless Steel 304 Spectacle Blind Flanges, ASTM A182 F304L Spectacle Blind Flanges, SA 182 SS 304H Spectacle Blind Flanges

SS 304/304L/304H Forged Flanges

UNS S30409 Forged Flanges, B16.5 Stainless Steel 304 Forged Flanges, ASTM A182 F304L Stainless Steel Forged Flanges, ASME SA 182 SS 304H Forged Flanges

SS 304/304L/304H Plate Flanges

UNS S30400 Plate Flanges, ANSI B16.5 Stainless Steel 304 Plate Flanges, ASTM A182 F304L Stainless Steel Plate Flanges, ASME SA 182 SS 304H Plate Flanges

304 Flanges Specification :

ASTM A182 / ASME SA182

Dimension Standard :

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Standard :

ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Size :

1/2" (15 NB) to 48" (1200NB)

Class / Pressure :

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type :

Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

DIN Flanges :

DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.

JIS Flanges :

JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K

BS Flanges :

BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Chemical Composition of 304/304L/304H Flanges

	C	Mn	Si	P	S	Cr	Ni	N
304	0.07max	2.0max	0.75max	0.045max	0.03max	min: 18.0 max: 20.0	min: 8.0 max: 10.5	—
304L	0.03max	2.0max	0.75max	0.045max	0.03max	min: 18.0 max: 20.0	min: 8.0 max: 12.0	0.10 max
304H	min: 18.0 max:20.0	min: 8.0 max: 10.5	min: 0.04 max:0.10	0.75 max	2.0 max	0.045 max	0.03 max	0.10 max

Mechanical Properties Of 304/304L/304H Flanges

Grade	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation %	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
304	75	30	40	201	92
304L	70	25	40	201	92
304H	75	30	40	201	92

Physical Properties of 304/304L/304H SS Flanges

SS 304/304L
Density lbm/in3	Thermal Conductivity (BTU/h ft. °F)	Electrical Resistivity (in x 10-6)	Modulus of Elasticity (psi x 106	Coefficient of Thermal Expansion (in/in)/ °F x 10-6	Specific Heat (BTU/lb/ °F)	Melting Range (°F)
at 68°F: 0.285	9.4 at 212°F	28.3 at 68°F	28	9.4 at 32 – 212°F	0.1200 at 68°F to 212°F	2500 to 2590
	12.4 at 932 °F	39.4 at 752°F		10.2 at 32 – 1000°F
		49.6 at 1652 °F		10.4 at 32 – 1500°F
SS 304H
Denstiy lbm/in3	Coefficient of Thermal Expansion (min/in)-°F		Thermal Conductivity BTU/hr-ft-°F		Specific Heat BTU/lbm -°F	Modules of Elasticity (annealed)2-psi
at 68 °F	at 68 – 212°F	at 68 – 1600°F	at 212°F	at 932°F	at 32 – 212°F	in tension (E)
0.285	9.2	11.0	9.4	12.4	0.12	29 x 106