Welded/Seamless Stainless Steel Tube

Standard

GB/T423T-92,GB/T14975-2002 ,GB/T14976-2002 ,GB/T13296-91,GB/T12770-91 , GB/T12771-91

ASTM A213/A213-99a ,ASTN312/A312M-00b ,ASTM A269-00 ,ASTMA511-96

Size

9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 318, 35, 60, 63.5, 73, 76.2, 88.9, 101.6, 

114.3, 127, 133, 159, 168, 219 mm or customized

Industrial process

hot rolled,hot expanded,cold drawn,and hot galvanized

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%

OD

6mm ~ 630mm

WT

0.5mm ~ 70mm

Length

6m or as customers' demand

Tolerance

a) Outer Diameter:6-32mm:+/- 0.2mm, 32-38:+/-0.15mm,42-60:+/-0.20mm,60mm:+/-0.25mm

b) Thickness: +/- 10%

c) Length: +/- 5mm

Surface

180G, 240G, 320G Satin / Hairline

400G, 600G Mirror finish

Application

Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, nuclear, etcand so on

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