SS 304/304L/304H Pipes – Versatile & Durable Solutions

KVN Steels is a prominent manufacturer and supplier of high-quality Stainless Steel 304, 304L, and 304H Pipes & Tubes in India. We not only manufacture but also supply and export our products to clients across the globe. Additionally, we are recognized as a reliable stockist and importer, offering a wide variety of pipes and tubes to meet diverse industrial needs. These products are available in multiple specifications, including surface finish, end finish, dimensions, shapes, sizes, lengths, and mechanical strength, tailored to customer requirements.

Pipes and tubes serve interchangeable roles in various industrial sectors. They are essential for transporting fluids and gases efficiently through systems. Pipes, typically round and hollow, are designed to convey fluids based on their internal diameter and wall thickness, which vary depending on the application. These structural elements play a critical role in maintaining fluid flow and system integrity.

We offer a wide range of products such as Stainless Steel 304 Seamless Pipes, SS ASTM A312 TP304L Pipes, ASTM A213 304H Tubes, SS 304 Welded Tubes, and ASTM A358 304L EFW Pipes. These products are manufactured in compliance with international standards and are widely used across numerous industries.

Tubes, on the other hand, are often used as pressure equipment and are available in various shapes including round, square, and rectangular. The main distinction between pipes and tubes lies in wall thickness, construction materials, and end connections, which vary based on their industrial application.

Our product portfolio also includes UNS S30400 Seamless Tubes, DIN 1.4301 ERW Pipes, UNS S30403 / S30409 Welded Pipes, DIN 1.4307 ERW Tubes, ASTM A213 TP304 Tubes, 304L SS Pipes, and ASME SA312 304H Pipes, making us a trusted stainless steel tube and Carbon Steel Pipes and Tubes supplier in India.

The SS 304 series alloys used in our pipes and tubes contain significant amounts of chromium and nickel, which impart excellent mechanical and corrosion-resistant properties. SS 304L, with its lower carbon content, offers enhanced resistance to intergranular corrosion, making it ideal for welding applications and for its uses. Meanwhile, SS 304H is engineered for high-temperature environments, delivering superior strength and performance under elevated thermal conditions.

These alloys enable the SS 304/304L/304H Pipes & Tubes to deliver outstanding performance in demanding applications. Key properties include high corrosion resistance, excellent ductility, long-term durability, thermal stability, and superior toughness—making them a dependable choice for critical industries worldwide.

304/304L/304H Stainless Steel Pipes and Tubes 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 Seamless Pipes

Stainless Steel 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 Seamless Tubes

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 Welded Pipes

Stainless Steel ASTM A312 TP304 Welded Pipes, UNS S30400 / DIN 1.4301 Welded Pipe, ASME SA312 SS 304L Welded Pipes, SS 304H Welded Pipe Supplier

SS 304/304L/304H Welded Tubes

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 EFW Pipes

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 ERW Pipes & Tubes

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

Stainless Steel Pipe Specification :

ASTM A312, A358 / ASME SA312, SA358

SS Tube Specification :

ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554

Pipe Size :

1/8” NB to 24” NB, 1/4” OD to 24” OD sizes.

Tube SIze :

1/2" OD to 8" OD.

Thickness Range :

0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Type :

Seamless / ERW / Welded / Fabricated Pipes

Form :

Round, Square, Rectangular, Oval, Hydraulic Etc

Length :

Single Random, Double Random & Required Length

End :

Plain End, Beveled End, Treaded

End Protection :

Plastic Caps

Outside Finish :

2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements

Delivery Condition :

Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Inspection, Test Reports :

Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports

Packing :

Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests

Specials :

Sizes and Specifications other than above can be manufactured on request

Chemical Composition of Stainless Steel 304/304L/304H Seamless Pipes And Tubes

	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 Stainless Steel 304/304L/304H Seamless Pipes and Tubes

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 Stainless Steel Pipes And Tubes

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