304l Stainless Steel Pipe
304l welded pipe
ss 304l pipe

304l Stainless Steel Pipe

1. Standard: ASTM A312、ASME SA312
2. Size: 1/2''~48''NB
3. Thickness: SCH5~SCHXXS
4. End: Beveled End, Plain End

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Product Introduction

304L Stainless Steel Pipe is one of the most widely used steel pipes in the world, including SS 304L seamless pipe and welded pipe. SS 304L pipe chemical composition includes chromium, nickel, manganese and sulfur, etc., with excellent corrosion resistance and mechanical properties, and low price. ASME SA312 UNS S30403 pipe is commonly used in oil drilling pipes, marine pipes, food processing industry pipelines, and various chemical processing system pipelines.

ASTM A312 UNS S30403 stainless steel pipe standard：

ASTM A312: Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASME B36.10：Specication for welded and seamless wrought steel pipe for high or low temperature and pressures.
ASME B36.19：Specification for stainless steel pipes

ASTM A312 TP304L Stainless Steel Pipe Specifications

Specifications	ASTM A 312/ASME SA 312
SS 304L Pipes	1/2″ NB – 16″ NB
ERW 304L Pipes	1/2″ NB – 24″ NB
EFW 304L Pipes	6″ NB – 100″ NB
Size	1/8″NB TO 30″NB IN
Schedule	SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH60, SCH80, XS, SCH120, SCH140, SCH160, XXS
Type	Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form	Round Pipes, Custom Pipes, Square Pipes, Rectangular Pipe, "U" Shape, Hydraulic Pipes
Length	Single Random, Double Random & Cut Length.

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Stainless Steel 304L Pipes Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	AFNOR	EN
SS 304L	1.4306 / 1.4307	S30403	SUS 304L	3304S11	Z3CN18‐10	X2CrNi18-9 / X2CrNi19-11

Chemical Composition of ASME SA312 UNS S30403 Pipes

Element	C	Mn	Si	P	S	Cr	Ni
SS 304L	0.035 max	2.0 max	1.0 max	0.045 max	0.03 max	18 – 20	8 – 13

DIN1.4306/1.4307 Stainless Steel Pipes Mechanical Properties

Grade	Tensile Strength (MPa) min	Elongation (% in 50mm) min	Yield Strength 0.2% Proof (MPa) min	Hardness
				Rockwell B (HR B) max	Brinell (HB) max
304L	515	35	205	92	201

AISI 304L Steel Tubes Physical Properties

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (m/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Electrical Resistivity (n.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
Alloy 304L	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

SS 304L Pipe High Temperature Resistance

SUS 304L pipe can withstand long-term use at a temperature of 400°C and up to a temperature of about 800°C, with excellent high temperature strength and oxidation resistance, as well as a low thermal expansion coefficient.