Aisi Astm A554 Stainless Steel Pipe 304 Thick Wall Tube Seamless Welded 201 316l
Seamless Stainless Steel Pipe AISI ASTM A554 Thick Wall Tube Seamless Welded 201 304 316l Stainless Steel Pipe
Is seamless pipe more expensive than welded?
Usually the seamless steel pipe cost is higher than welded steel pipes, because the raw material, manufacturing
equipment and processes. But sometimes by the market pressure, welded pipe is more expensive, so if you met
this situation, don't hesitate to purchase the seamless steel pipe for the same dimensions.
What is AISI ASTM A554?
ASTM A554 Square Tube is part of the A554 specification. This specification covers pipes that require mechanical
properties, corrosion resistance and appearance characteristics. The specification can have any material grade made tubes.
316 contains many similar chemical and mechanical properties as 304 stainless steel. To the naked eye,the two metals
look the same. However, the chemical composition of 316, which is made up of 16% chromium,10% nickel, and 2%
molybdenum, is the main difference between 304 and 316 stainless steel.
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Name
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304 316 Stainless Steel Round Square Pipe Welded Pipe Seamless Pipe Tube with Polished
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Standard
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ASTM A554,ASTM A312
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Material Grade
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201,202,304,316,316L,430
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Size Range
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139mm-1600mm ETC.
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Thickness
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0.5-30mm
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Length
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6m or as customers' request
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Tolerance |
a) Outer Diameter: +/- 0.2mm
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b) Thickness: +/- 0.02mm
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c) Length: +/- 5mm
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Surface
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180G, 320G Satin/Hairline
400G, 600G Mirror finish |
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Application
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handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc
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Test
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Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT
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Chemical Composition of Material |
Material Composition |
201
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202
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304
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316L
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430
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C
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≤0.15
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≤0.15
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≤0.08
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≤0.035
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≤0.12
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Si
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≤1.00
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≤1.00
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≤1.00
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≤1.00
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≤1.00
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Mn
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5.5-7.5
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7.5-10
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≤2.00
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≤2.00
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≤1.00
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P
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≤0.06
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≤0.06
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≤0.045
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≤0.045
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≤0.040
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S
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≤0.03
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≤0.03
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≤0.030
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≤0.030
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≤0.030
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Cr
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13-15
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14-17
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18-20
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16-18
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16-18
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Ni
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0.7-1.1
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3.5-4.5
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8-10.5
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10-14
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Mo
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2.0-3.0
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Mechanical Property |
Material Item
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201
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202
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304
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316
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Tensile Strength
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≥535
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≥520
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≥520
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≥520
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Yield Strength
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≥245
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≥205
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≥205
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≥205
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Extension
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≥30%
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≥30%
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≥35%
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≥35%
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Hardness (HV)
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<105
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<100
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<90
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<90
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Product display
Application
Shipping:
2. Goods delivered by 20" , 40" FCL/LCL by quantity or customer's request.
3. Customers specifying freight forwarders or negotiable shipping methods!
4. Delivery Time: 10-30days after conformed or according to quantity.
FAQ
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.