Seamless / Welded Austenitic Stainless Steel Pipes For Petrochemical 304 316L 317L

A312 Seamless/Welded austenitic stainless steel pipe

Item

Contents

Requirements

1

Materail

TP304, TP304L, TP304H, TP310S, TP316, TP316L, TP316Ti, TP316H, TP317L, TP321

2

Welding Method

Seamless Or Automatic Welding Process With No Addition Of Filler Metal During The Welding Process

3

ChemicalComposition

A312 Item7, 8

4

Heat Treatment

Anealing Acc.to A312 Table2

5

Straightness

Depends on Requirements of Buyer

6

Tolerance

Dimention:Acc.to A999 Table 1
Wall Thickness:A312 Table3.
Length:<=7.3m,Tolerance +0~+6mm;>7.3m,Depends on The Buyer and Seller

7

Mechanical Property

Mechanical Property:Enlongation 45%-65%

Expansion Test:Acc.To ASTM A249 & ASTM A1016

Flange Test: Acc.To ASTM A249 & ASTM  A1016

Flattening Test: Acc.To ASTM A249 & ASTM  A1016

Hardness:HRB 75-90

Grade

Chemical Composition(%)

Remark

C≤

Mn≤

P≤

S≤

Si≤

Cr

Ni

Mo

N

Cu

304

0.08

2.00

0.045

0.030

0.75

18.0~20.0

8.0~10.50

0~0.1

316L

0.030

2.00

0.045

0.030

0.75

16.0~18.0

10.0~14.0

2.0~3.0

0~0.1

317L

0.030

2.00

0.045

0.030

0.75

18.0~20.0

11.0~15.0

3.0~4.0

0~0.1

1. Stainless Steel Pipes for Liquid Delivery.

2. Stainless Steel Pipes For Petrochemical Industry, Boiler,  Heat-sink, Condenser and Heat-exchanger.

3. Stainless Steel Pipes for Medicine and Food Industry.

4. Stainless Steel Pipes for Mechanical and Construction.