Welded carbon steel pipe
1. Size of Galvanized Welded Steel Pipe: 1/4' ' to 24' '
2 Standards: ASTM, API, DIN , JIS
3 Surface: Oiled, varnished or black painted to prevent rust
4 Technical standard: API 5LGR. B , ASTM A106/A53 GR. B;
High-pressure boiler pipe, fluid pipe
High-pressure boiler pipe, fluid pipe
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Name
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Welded steel pipe
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Standard
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ASTM A312, A249, A269 and A270, A554
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Material Grade
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201,202,304,316,316L, 430
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Main Material
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a) 201 (Ni0.8%-1%)
b) 202 (Ni: 3.5%-4.5%)
c) 304 (Ni: 8% Cr: 18%)
d) 316 (Ni: 10% Cr: 18%)
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Size Range
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9.53mm-254mm
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Thickness
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0.3mm - 3.0mm
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Length
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6m or as customers' request
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Tolerance
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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, 240G, 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
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Material
Composition
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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
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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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