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Model No.: GB/T12770
Brand: Torich
Type: Welded
Certification: UL
Application: Structure Pipe
Section Shape: Round
Surface Treatment: Polished
Usage: Construction & Decoration
Technique: Cold Rolled Cold Drawn
Material: Stainless Steel 201/304/316
Finish: Heat Treatment
WT: 0.5-50mm
Name: GB/T12770 Material 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes For Mechanical Structures
Grade: S30210 S30408 S30403 S31008
Surface: Pickling,polished
OD: 3-500mm
Packaging: in seaworthy packing
Productivity: 50000tons/year
Transportation: Ocean,Land,Air
Place of Origin: Zhejiang, China (Mainland)
Supply Ability: 60000 Ton per year
Certificate: ISO9001:2008 ISO14001:2008, TS16949, CE PED, TUV, API
HS Code: 7306110000
Port: Ningbo,Shanghai,Zhoushan
Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,FCA,CPT
Product Name: GB/T12770 Material 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures
Size range: O.D.:3-500mm W.T.:0.5-50mm L:2000-12000mm according to customers' actual application and production.
Application : For Mechanical Structures purposes
Steel Grade: 12Cr18Ni9,06Cr19Ni10,022Cr19Ni10,06Cr25Ni20,022Cr22Ni5Mo3N,019Cr19Mo2NbTi,06Cr13Al
Characteristic:
Good concentricity
Good surface quality
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
Table1Tolerance of OD
Classification | Nominal OD | Permissible Tolerance | ||
PC | PB | PA | ||
H T | <25 | ±0.20 | ±0.15 | ±0.10 |
≥25~<40 | ±0.30 | ±0.25 | ±0.20 | |
≥40~<63 | ±0.50 | ±0.30 | ±0.25 | |
≥63~<90 | ±0.60 | ±0.50 | ±0.40 | |
≥90~<159 | ±0.80 | ±0.65 | ±0.50 | |
≥159~<300 | ±0.8%D | ±0.7%D | ±0.5%D | |
≥300~<610 | ±0.1%D | ±0.8%D | ±0.6%D | |
≥10 | protocol | protocol | protocol | |
WC SP | <25 | ±0.15 | ±0.12 | ±0.10 |
≥25~<40 | ±0.20 | ±0.15 | ±0.13 | |
≥40~<50 | ±0.20 | ±0.18 | ±0.15 | |
≥50~<60 | ±0.25 | ±0.20 | ±0.18 | |
≥60~<90 | ±0.30 | ±0.28 | ±0.25 | |
≥90~<100 | ±0.40 | ±0.35 | ±0.30 | |
≥100~<200 | ±0.5%D | ±0.4%D | protocol | |
≥200 | protocol | protocol | protocol |
Table 2Tolerance 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
Nominal Wall Thickness/mm | Bending Degree/(mm/m) |
≤108 | ≤1.0 |
>108~325 | ≤1.5 |
>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 | 06Cr25Ni20 | 7.98 | W=0.02507S(D-S) |
5 | 06Cr17Ni12Mo2 | 8.00 | W=0.02513S(D-S) |
6 | 022Cr17Ni12Mo2 | ||
7 | 06Cr18Ni11Ti | 8.03 | W=0.02523S(D-S) |
8 | 06Cr18Ni11Nb | ||
9 | 022Cr22Ni5Mo3N | 7.80 | W=0.02450S(D-S) |
10 | 022Cr23Ni5Mo3N | ||
11 | 022Cr25Ni7Mo4N | ||
12 | 022Cr18Ti | 7.70 | W=0.02491S(D-S) |
13 | 019Cr19Mo2NbTi | 7.75 | W=0.02435S(D-S) |
14 | 06Cr13Al | ||
15 | 022Cr11Ti | ||
16 | 022Cr12Ni | ||
17 | 06Cr13 |
Table 5 Steel Grade and Chemical Componenet
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 | - | - | Ti15C~0.70 | |
8 | S34778 | 06Cr18Ni11Nb | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.040 | ≤0.030 | 9~12 | 17~19 | - | - | Nb110C~1010 | |
9 | Bipolar | S22253 | 022Cr22Ni5Mo3N | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.020 | 4.5~6.5 | 21~23 | 2.5~3.5 | 0.08~0.20 | |
10 | S22053 | 022Cr23Ni5Mo3N | ≤0.030 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.020 | 4.5~6.5 | 22~23 | 3~3.5 | 0.14~0.20 | ||
11 | S25073 | 022Cr25Ni7Mo4N | ≤0.030 | ≤0.80 | ≤1.20 | ≤0.035 | ≤0.020 | 6~8 | 24~26 | 3~5 | 0.24~0.32 | Cu≤0.50 | |
12 | Ferrite | S11863 | 022Cr18Ti | ≤0.03 | ≤0.75 | ≤1 | ≤0.04 | ≤0.03 | (0.60) | 16~19 | - | - | Ti or Nb:0.1~1 |
13 | 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 | |
14 | S11348 | 06Cr13Al | ≤0.08 | ≤0.75 | ≤1 | ≤0.04 | ≤0.03 | (0.60) | 11.50~14.50 | - | - | Al:0.1~0.3 | |
15 | S11163 | 022Cr11Ti | ≤0.03 | ≤0.75 | ≤1 | ≤0.04 | ≤0.02 | (0.60) | 10.50~11.70 | - | ≤0.030 | Ti≥8(C+N),Ti:0.15~0.50,Nb≤0.10 | |
16 | S11213 | 022Cr12Ni | ≤0.03 | ≤0.75 | ≤1.5 | ≤0.04 | ≤0.015 | 0.3~1.00 | 10.50~12.50 | - | ≤0.030 | ||
17 | Martensitic | S41008 | 06Cr13 | ≤0.08 | ≤0.75 | ≤1 | ≤0.04 | ≤0.03 | (0.60) | 11.50~13.50 | - | - | - |
Note:The number in brackets is the maximum allowed to be added. Chemical component of some grade is different from GB/T20878. |
Table 6 Recommendatory heat treating regime of the steel tubes
No. | Type | Steel grade | Recommendatory heat treating regime |
1 | Austenite | 12Cr18Ni9 | 1010℃~1150℃,water-cooling or other methods of rapid cooling |
2 | 06Cr19Ni10 | 1010℃~1150℃,water-cooling or other methods of rapid cooling | |
3 | 022Cr19Ni10 | 1010℃~1150℃,water-cooling or other methods of rapid cooling | |
4 | 06Cr25Ni20 | 1030℃~1180℃,water-cooling or other methods of rapid cooling | |
5 | 06Cr17Ni12Mo2 | 1010℃~1150℃,water-cooling or other methods of rapid cooling | |
6 | 022Cr17Ni12Mo2 | 1010℃~1150℃,water-cooling or other methods of rapid cooling | |
7 | 06Cr18Ni11Ti | 920℃~1150℃,water-cooling or other methods of rapid cooling | |
8 | 06Cr18Ni11Nb | 980℃~1150℃,water-cooling or other methods of rapid cooling | |
9 | Dual-phase steel | 022Cr22Ni5Mo3N | 1020℃~1100℃,water-cooling |
10 | 022Cr23Ni5Mo3N | 1020℃~1100℃,water-cooling | |
11 | 022Cr25Ni7Mo4N | 1025℃~1125℃,water-cooling | |
12 | Ferritic | 022Cr18Ti | 780℃~950℃,rapid cooling or slow cooling |
13 | 019Cr19Mo2NbTi | 800℃~1050℃,rapid cooling | |
14 | 06Cr13Al | 780℃~830℃,rapid cooling or slow cooling | |
15 | 022Cr11Ti | 800℃~900℃,rapid cooling or slow cooling | |
16 | 022Cr12Ni | 700℃~820℃,rapid cooling or slow cooling | |
17 | Martensite | 06Cr13 | 750℃,rapid cooling ;800℃~900℃,slow cooling |
China Stainless Steel Tube manufacturers, our Stainless Steel Exhaust Tube, Welded Steel Tube, Round Stainless Steel Pipe, Polish Stainless Steel Tube, Stainless Coiled Tube, Duplex Stainless Steel Tube are good in quality and competitive in price.
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