Name

Stainless Steel Seamless & Welded Tube &Pipe

Items

Square tubes, round tubes, oval pipes, special shaped pipes,

empaistic pipes, fittings

Standard

ASTM A312,

Material Grade

201: Ni 0.8%~1%

202: Ni 3.5%~4.5%

304: Ni 8%, Cr 18%

316: Ni 10%, Cr 18%

316L: Ni10%~14%

430: Cr16%~18%

Outer Diameter

10.29mm--812.80mm

Thickness

1.0mm - 60.00mm

Length

6m or as customers' request

Tolerance

a) Outer Diameter: +/- 0.2mm

b) Thickness: +/- 10%

c) Length: +/- 5mm

Surface

180G, 240G, 320G Satin / Hairline

400G, 600G Mirror finish

Application

handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc

Test

Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT

Chemical Composition of Material

Material

Composition

201

202

304

316L

430

C

≤0.15

≤0.15

≤0.08

≤0.035

≤0.12

Si

≤1.00

≤1.00

≤1.00

≤1.00

≤1.00

Mn

5.5-7.5

7.5-10

≤2.00

≤2.00

≤1.00

P

≤0.06

≤0.06

≤0.045

≤0.045

≤0.040

S

≤0.03

≤0.03

≤0.030

≤0.030

≤0.030

Cr

13-15

14-17

18-20

16-18

16-18

Ni

0.7-1.1

3.5-4.5

8-10.5

10-14

Mo

2.0-3.0

Mechanical Property

Material Item

201

202

304

316

Tensile Strength

≥535

≥520

≥520

≥520

Yield Strength

≥245

≥205

≥205

≥205

Extension

≥30%

≥30%

≥35%

≥35%

Hardness (HV)

<105

<100

<90

<90