Stainless Steel Pipe 201

The 201 stainless steel pipe has excellent rust resistance and intergranular corrosion resistance. For oxidizing acid, it is concluded in the experiment that 201 stainless steel pipe has strong corrosion resistance in nitric acid with the concentration less than 65% and the boiling temperature below. It also has good corrosion resistance to alkali solution and most organic and inorganic acids.

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Product Details

Product Introduction

The 201 stainless steel pipe has excellent rust resistance and intergranular corrosion resistance. For oxidizing acid, it is concluded in the experiment that 201 stainless steel pipe has strong corrosion resistance in nitric acid with the concentration less than 65% and the boiling temperature below. It also has good corrosion resistance to alkali solution and most organic and inorganic acids.


Specification

Name

stainless steel pipe 201

Standard

ASTM   A554, A249, A269 and A270

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

10-1000mm

Thickness

1-100mm

Length

6m  or as customers' request

Tolerance

a)  Outer Diameter: +/- 0.2mm

b)  Thickness: +/- 0.02mm

c) Length: +/- 5mm

Surface

180G,   240G, 320G  Satin / Hairline 400G, 600G Mirror finish

Application

handrail, railing, staircase, weld mesh 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

316

316L

430

C

≤0.15

≤0.15

≤0.08

≤0.08

≤0.035

≤0.12

Si

≤1.00

≤1.00

≤1.00

≤1.00

≤1.00

≤1.00

Mn

5.5-7.5

7.5-10

≤2.00

≤2.00

≤2.00

≤1.00

P

≤0.06

≤0.06

≤0.045

≤0.045

≤0.045

≤0.040

S

≤0.03

≤0.03

≤0.030

≤0.030

≤0.030

≤0.030

Cr

13-15

14-17

18-20

16-18

16-18

16-18

Ni

0.7-1.1

3.5-4.5

8-10.5

10.0-14.0

10.0-14.0

**

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


More info

Generally speaking, the diameter of the pipe can be divided into outside diameter, inner diameter and nominal diameter.

Tubes for seamless steel tubes for the outer diameter of the tube with the letter D, followed by the size and wall thickness, such as external diameter of 108 seamless steel tube, wall thickness of 5MM, with D108*5 said.

Plastic pipes are also expressed in outer diameter, such as De63.

Other such as reinforced concrete pipe, cast iron pipe, galvanized steel pipe, such as the use of DN indicated.

The nominal diameter of the pipe and its inner diameter, outside diameter are not equal, for example: the nominal diameter of 100MM seamless steel tube has 102*5, 108*5, etc. several kinds, 108 is the outside diameter of the pipe, 5 means the wall thickness of the pipe, therefore, the diameter of the steel pipe is (108-5-5) =98mm. But it is not completely equal to the diameter of the steel tube minus twice times wall thickness, it can also be said that the nominal diameter is close to the inner diameter, which is not equal to the inner diameter of a pipe diameter of the specification name. In the design drawings so to use the nominal diameter, in order to determine according to the nominal diameter of the pipe, pipe fittings, valves, Flanges, Gaskets, such as structural size and connection size, nominal diameter of the symbol DN, if the use of outside diameter in the design drawings, also should make a pipe specification table, indicating the nominal diameter of a pipe, wall thickness.


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