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GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery

Basic Information
Place of Origin: China
Brand Name: TORICH
Certification: ISO9001:2008,ISO14001:2008
Model Number: GB/T12771
Minimum Order Quantity: 5 ton
Price: negotiable
Packaging Details: in seaworthy packing
Delivery Time: 30-35 work days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 50000Ton per year
Detail Information
Material: Stainless Steel 201/304/316 Grade: S30210 S30408 S30403 S31008
Surface: Pickling Technique: Arc Welding
OD: 3-500mm WT: 0.5-50mm
High Light:

stainless tube steel

,

large diameter stainless steel tube


Product Description

 

Product Name:

GB/T12771 12Cr18Ni9 06Cr18Ni11Ti Welded Stainless Steel Pipes For Liquid Delivery

 

Standard: Size Range:

GB/T12771 OD:5-500mm WT:0.5-50mm Length:3-9 M,according to customers' actual application and production.

 

Application: For Liquid Delivery

 

Steel Grade: 304/316/321/347/444

 

Technology: arc welding

 

Characteristic:

Good concentricity

Good surface quality

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

 

Table 1 Tolerance of OD

Classification D Permissible Tolerance
A B
H All Dimensions ±0.5% or ±0.20 ±0.75% or ±0.30
T <40 ±0.20 ±0.30
≥40~<65 ±0.30 ±0.40
≥65~<90 ±0.40 ±0.50
≥90~<168.3 ±0.80 ±1.00
≥168.3~<325 ±0.75%D ±1%D
≥325~<610 ±0.6%D ±1%D
≥610 ±0.6%D ±0.7%D or ±10

WC

SP

<40 ±0.15 ±0.20
≥40~<60 ±0.20 ±0.30
≥60~<100 ±0.30 ±0.40
≥100~<200 ±0.4%D ±0.5%D
≥200 ±0.5%D ±0.75%D

 

Table 2 Tolerance of WT

Nominal WT Permissible Tolerance
≤0.5 ±0..10
>0.5~1.0 ±0.15
>1.0~2.0 ±0.20
>2.0~<4.0 ±0.30
≥4.0 ±10%S

 

Table 3 Bending degree

Out diameter/mm Bending degree/(mm/m)
≤108 ≤1.5
>108~325 ≤2.0
>325 ≤2.5

 

Table4 The density of the steel and Calculation of Theoretic Weight

No. Steel Grade Density/(kg/dm3) The formula after conversion
1 12Cr18Ni9 7.93 W=0.02491S(D-S)
2 06Cr19Ni10
3 022Cr19Ni10 7.90 W=0.02482S(D-S)
4 06Cr18Ni11Ti 8.03 W=0.02507S(D-S)
5 06Cr25Ni20 7.98 W=0.02507S(D-S)
6 06Cr17Ni12Mo2 8.00 W=0.02513S(D-S)
7 022Cr17Ni12Mo2
8 06Cr18Ni11Nb 8.03 W=0.02523(D-S)
9 022Cr18Ti 7.70 W=0.02419(D-S)
10 022Cr18Ti 7.75 W=0.02435S(D-S)
11 06Cr13Al
12 022Cr19Mo2NbTi
13 022Cr12Ni
14 06Cr13

 

Table 5 Steel Grade and Chemical Component(Melting Analysis)

No. Type Unified digital code Grade Chemical Componenet(Quality Fraction)/%
C Si Mn P S Ni Cr Mo N Others
1 Austenite S30210 12Cr18Ni9 ≤0.15 ≤0.75 ≤2.00 ≤0.040 ≤0.030 8~10 17~19 - ≤0.10 -
2 S30408 06Cr19Ni10 ≤0.08 ≤0.75 ≤2.00 ≤0.040 ≤0.030 8~11 18~20 - - -
3 S30403 022Cr19Ni10 ≤0.030 ≤0.75 ≤2.00 ≤0.040 ≤0.030 8~12 18~20 - - -
4 S31008 06Cr25Ni20 ≤0.08 ≤1.50 ≤2.00 ≤0.040 ≤0.030 19~22 24~26 - - -
5 S31608 06Cr17Ni12Mo2 ≤0.08 ≤0.75 ≤2.00 ≤0.040 ≤0.030 10~14 16~18 2~3 - -
6 S31603 022Cr17Ni12Mo2 ≤0.08 ≤0.75 ≤2.00 ≤0.040 ≤0.030 10~14 16~18 2~3 - -
7 S32168 06Cr18Ni11Ti ≤0.08 ≤0.75 ≤2.00 ≤0.040 ≤0.030 9~12 17~19 - - Ti5×C~0.70
8 S34778 06Cr18Ni11Nb ≤0.08 ≤0.75 ≤2.00 ≤0.040 ≤0.030 9~12 17~19 - - Nb10×C~1.10
9 Ferrite S11863 022Cr18Ti ≤0.03 ≤0.75 ≤1 ≤0.04 ≤0.03 (0.60) 16~19 - - Ti or Nb 0.1~1
10 S11972 019Cr19Mo2NbTi ≤0.025 ≤0.75 ≤1 ≤0.04 ≤0.03 1.00 17.5~19.50 1.75~2.50 ≤0.035 (Ti+Nb)[0.2+4(C+N)]~0.8
11 S11348 06Cr13Al ≤0.08 ≤0.75 ≤1 ≤0.04 ≤0.03 (0.60) 11.50~14.50 - - Al:0.1~0.3
12 S11163 022Cr11Ti ≤0.03 ≤0.75 ≤1 ≤0.04 ≤0.02 (0.60) 10.5~11.7 - ≤0.03 Ti≥8(C+N),Ti0.15~0.5,Nb0.1
13 S11213 022Cr12Ni ≤0.03 ≤0.75 ≤1.5 ≤0.04 0.015 0.3~1 10.5~12.5 - ≤0.03

 

 

 

14 Martensitic S41008 06Cr13 ≤0.08 ≤0.75 ≤1 ≤0.04 ≤0.03 (0.60) 11.5~13.5 - - -

 

Table 6 Heat treatment system of steel pipe

Number Type New Brand Old Brand Recommended heat treatment system
1 Austenite 12Cr18Ni9 1Cr18Ni9 solution treatment

1010℃~1150℃

rapid cooling

2 06Cr19Ni10 0Cr18Ni9

1010℃~1150℃

rapid cooling

3 022Cr19Ni10 00Cr19Ni10

1010℃~1150℃

rapid cooling

4 06Cr25Ni20 0Cr25Ni20

1030℃~1180℃

rapid cooling

5 06Cr17Ni12Mo2 0Cr17Ni12Mo2

1010℃~1150℃

rapid cooling

6 022Cr17Ni12Mo2 00Cr17Ni14Mo2

1010℃~1150℃

rapid cooling

7 06Cr18Ni11Ti 0Cr18Ni10Ti

920℃~1150℃

rapid cooling

8 06Cr18Ni11Nb 0Cr18Ni11Nb

980℃~1150℃

rapid cooling

9 Ferritic 022Cr18Ti 00Cr17 Annealing treatment 780℃~950℃ rapid cooling or slow cooling
10 019Cr19Mo2NbTi 00Cr18Mo2

800℃~1050℃

rapid cooling

11 06Cr13Al 0Cr13Al 780℃~830℃ rapid cooling or slow cooling
12 022Cr11Ti --

830℃~950℃

rapid cooling

13 022Cr12Ni --

830℃~950℃

rapid cooling

14 Martensitic 06Cr13 0Cr13 750℃ rapid cooling or 800℃~900℃ slow cooling
The demand side stipulates that the stabilization heat treatment system is 850 C ~930 C rapid cooling when the heat treatment needs to be stabilized after the solution heat treatment.
 

 

 

 

Table 7 Mechanical properties of steel tubes.

Number New Brand Ola Brand

non-proportional extension strength GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery 0/

MPa

tensile strength

GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery 1/

MPa

elongation after fracture

A/

%

Heat treatment condition Non-heat treatment condition
Not less than
1 12Cr18Ni9 1Cr18Ni9 210 520 32 25
2 06Cr19Ni10 0Cr18Ni9 210 520
3 022Cr19Ni10 00Cr19Ni10 180 480
4 06Cr25Ni20 0Cr25Ni20 210 520
5 06Cr17Ni12Mo2 0Cr17Ni12Mo2 210 520
6 022Cr17Ni12Mo2 00Cr17Ni14Mo2 180 480
7 06Cr18Ni11Ti 0Cr18Ni10Ti 210 520
8 06Cr18Ni11Nb 0Cr18Ni11Nb 210 520
9 022Cr18Ti 00Cr17 180 360 20 --
10 019Cr19Mo2NbTi 00Cr18Mo2 240 410
11 06Cr13Al 0Cr13Al 177 410
12 022Cr11Ti -- 275 400 18 --
13 022Cr12Ni -- 275 400 18 --
14 06Cr13 0Cr13 210 410 20 --
 

 

 

Table 8 Methods of sampling and test for steel pipe inspection

Number Inspection Item Number of Sampling Sampling Method Test Method
1 Chemical Composition 1 samples per stove GB/T 20066 GB/T 223,GB/T 11170,GB/T 20123,GB/T 20124
2 Tensile Test 1 samples per batch on two steel tubes GB/T 2975 GB/T 228
3 Hydraulic Pressure Test One by one __ GB/T 241
4 Eddy Current Test One by one __ GB/T 7735
5 Flattening Test 1 samples per batch on 1 steel tube GB/T 246 GB/T 246
6 Transverse Bending Test of Welds 1 samples per batch on 1 steel tube GB/T 232 GB/T 232
7 Intercryctalline Corrosion 1 samples per batch on 1 steel tube GB/T 4334.5 GB/T 4334.5
8 Radiographic Test 6.6 steel tube __ GB/T 3323
9 Flange Test 1 samples per batch on 1 steel tube GB/T 245 GB/T 245
10 Austenite Grain Size 1 samples per batch on 1 steel tube GB/T 6394 GB/T 6394
11 Impact Test for Welded Joint Agreement GB/T 2650 GB/T 2650
 


GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery 2 GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304 / 316Welded Stainless Steel Pipes For Liquid Delivery 3

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