304 Stainless Steel Pipe

OD: 6mm ~ 630mm
WT: 0.5mm ~ 70mm
Length: 6m or as customers' demand
Surface Treatment: Matte(usually used as industrial pipe) / Mirror finish(usually used as decoration pipe)
Test: For steel to withstand fluid, pressure hydraulic test should be carried out to test its quality, leakage does not occur at a predetermined pressure, wet or expansion of qualified, some steel but also do curling trials, flaring test, flattening test according to the standard or demand side.  

Application: 304 stainless steel pipe is a hollow strip steel, a large number of users for conveying fluid pipe, such as oil, natural gas, water, gas, steam, etc. in addition, it will be lighter engaged in the same torsional strength. so also widely used in the manufacture of mechanical parts and engineering structures. Also used in producing all kinds of conventional weapons, the barrel, shells and so on.

 Chemical Composition 

C Si Mn Cr N P S Ni
≤0.07 ≤1.0 ≤2.0 18.0~20.0 ≤0.10 ≤0.035 ≤0.030 8.0-10.5


Mechanical Property

Tensile Strength Yield Strength Elongation Elastic Modulus HRB HB HV Density
≥520MPa ≥205MPa ≥40% 29,000,000 psi


≤90N/mm2(MPa) ≤187 ≤200 7.93g/cm3


Standard GB/T 8162-2008, material #10, #20, #45, 20Mn,25Mn,Q235,Q275, Q345, 30Cr, 40Cr,35CrMo, 42CrMo
GB/T 8163-2008 mateiral #10, #20, Q345
ASTM A53/A53M, material A53 GR.B
API 5L, maerail A,B,X42,X46,X52,X56,X60
API 5CT, material J55,N80,P110
ASTM A519, material 1010,1045,4130,4140 etc
ASTM A 179/A179M, material A179
ASTM A 192/A192M, material A192
DIN1629, material ST37.0,ST44.0,ST52.0
DIN17175, material ST35.8,ST45.8 etc
DIN2391, material ST35,ST45,ST52
EN10305, materail E215,E235,E355



Dimensions and Tolerances

Deviation Level Standardized Outside Diameter Tolerance
D1 ±1.5%,Min±0.75 mm
D2 ±1.0%,Min±0.50 mm
D3 ±0.75%,Min±0.30 mm
D4 ±0.50%,Min±0.10 mm


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