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Welded austenitic boiler and heat-exchanger Stainless Steel Pipes
| Payment Type: | L/C,T/T,D/P,Paypal,Money Gram,Western Union |
|---|---|
| Incoterm: | FOB,CFR,CIF,FCA,CPT |
| Min. Order: | 5 Ton |
| Delivery Time: | 35 Days |
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Basic Info
Model No.: GB/T24593
Type: Welded
Certification: API, CE, BSI, UL
Application: Boiler Pipe
Section Shape: Round
Surface Treatment: Polished
Usage: Thermal Equipment
Technique: Cold Drawn, Cold Rolled Cold Drawn
Material: Stainless Steel, Stainless Steel 201/304/316
Name: Welded Austenitic Boiler Pipe
Grade: S30210 S30408 S30403 S31008
Surface: Pickling，polished
Finish: Heat Treatment
OD: 3-500mm
WT: 0.5-50mm
Additional Info
Packaging: in seaworthy packing
Productivity: 50000 tons/year
Brand: TORICH
Transportation: Ocean,Land,Air
Place of Origin: Zhejiang, China (Mainland)
Supply Ability: 20000 Ton per year
Certificate: ISO9001:2008 ISO14001:2008, TS16949
HS Code: 7304111000
Port: Ningbo,Shanghai,Zhoushan
Product Description
Stainless Steel Tube 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. Welded Steel Pipe
Product Name: Welded austenitic boiler and heat-exchanger Stainless Steel Pipes
Size range: O.D.:3-500mm W.T.:0.5-50mm L:2000-12000mm according to customers' actual application and production.
Application : For boiler and heat-exchanger
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 |
Table 3 chemical composition
| Steel grade | Chemical compositon % | ||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | N | |
| 12Cr18Ni9 | 0.15 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~10.00 | 17.00 ~19.00 | - | 0.10 |
| 06Cr18Ni10 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~11.00 | 18.00 ~20.00 | - | - |
| 022Cr19Ni10 | 0.030 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~12.00 | 18.00 ~20.00 | - | - |
| 07Cr19Ni10 | 0.04~0.10 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~11.00 | 18.00 ~20.00 | - | - |
| 06Cr19Ni10N | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~11.00 | 18.00 ~20.00 | - | 0.10 ~0.16 |
| 022Cr19Ni10N | 0.030 | 1.00 | 2.00 | 0.035 | 0.03 | 8.00~11.00 | 18.00 ~20.00 | - | 0.10 ~0.16 |
| 10Cr18Ni12 | 0.12 | 1.00 | 2.00 | 0.035 | 0.03 | 10.50~13.00 | 18.00 ~20.00 | - | - |
| 06Cr23Ni13 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 12.00~15.00 | 17.00 ~19.00 | - | - |
| 03Cr25Ni20 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 19.00~22.00 | 22.00 ~24.00 | - | - |
| 06Cr17Ni12Mo2 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 10.00~14.00 | 24.00 ~26.00 | 2.00 ~3.00 | - |
| 022Cr17Ni12Mo2 | 0.030 | 1.00 | 2.00 | 0.035 | 0.03 | 10.00~14.00 | 16.00 ~18.00 | 2.00 ~3.00 | - |
| 06Cr17Ni12Mo2Ti | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 10.00~14.00 | 16.00 18.00 | 2.00 ~3.00 | - |
| 06Cr17Ni12MoN | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 10.00~13.00 | 16.00 ~18.00 | 2.00 ~3.00 | 0.10 ~0.16 |
| 022Cr17Ni12Mo2N | 0.030 | 1.00 | 2.00 | 0.035 | 0.03 | 10.00~13.00 | 16.00 ~18.00 | 2.00 ~3.00 | 0.10 ~0.16 |
| 06Cr19Ni13Mo3 | 0.08 | 1.00 | 2.00 | 0.035 | 0.03 | 11.00~15.00 | 16.00 ~18.00 | 3.00 ~4.00 | - |
| No. | No.in GB/T20878 | Unified digital code | STEEL GRADE | Recommended heat treatment system | Tensile property | Hardness |
| ||
| tensile strength Rm/(N/MM2) | Stipulated elongation strength of plastic mold Rp0.2/(N/mm2) | Elongation A/% | HRB |
| |||||
| ≥ | ≤ |
| |||||||
| 1 | 13 | S30210 | 12Cr18Ni9 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 2 | 17 | S30408 | 06Cr19Ni10 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 3 | 18 | S30409 | 022Cr19Ni10 | ≥1040℃.Rapid cooling | 485 | 170 | 35 | 90 |
|
| 4 | 19 | S30458 | 07Cr19Ni10 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 5 | 23 | S30458 | 06Cr19Ni10N | ≥1040℃.Rapid cooling | 550 | 240 | 35 | 90 |
|
| 6 | 25 | S30453 | 022Cr19Ni10N | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 7 | 26 | S30510 | 10Cr18Ni12 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 8 | 32 | S30908 | 06Cr23Ni13 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 9 | 35 | S31008 | 06Cr23Ni20 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 10 | 38 | S31608 | 06Cr17Ni12Mo2 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 11 | 39 | S31603 | 022Cr17Ni12Mo2 | ≥1040℃.Rapid cooling | 485 | 170 | 35 | 90 |
|
| 12 | 41 | S31668 | 06Cr17Ni12Mo2Ti | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 13 | 43 | S31658 | 06Cr17Ni12Mo2N | ≥1040℃.Rapid cooling | 550 | 240 | 35 | 90 |
|
| 14 | 44 | S31653 | 022Cr17Ni12Mo2N | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 15 | 49 | S31708 | 06Cr19Ni13Mo3 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 16 | 50 | S31703 | 022Cr19Ni13Mo3 | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 17 | 55 | S32168 | 06Cr18Ni11Ti | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 18 | 62 | S34778 | 06Cr18Ni11Nb | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 |
|
| 19 | 63 | S34779 | 07Cr18Ni11Nb | ≥1040℃.Rapid cooling | 515 | 205 | 35 | 90 | |
Table 5 Inspection items and sampling quantity
| Inspection items | sampling quantity |
| Chemical composition | Each furnace Take one sample |
| Tensile test | One sample for each batch on two test tubes |
| Hardness test | One sample for each batch on two test tubes |
| Flattening test | One sample for each batch on two test tubes |
| Coiling test | One sample for each batch on two test tubes |
| Expansion test | One sample for each batch on two test tubes |
| Reversed bending test | One sample at every 450M of tubes |
| longitudinal flattenin test | One sample for each batch on two test tubes |
| Hydraulic test | Per piece |
| Eddy current flaw detection | Per piece |
| Intergranular corrosion test | One sample for each batch on two test tubes |
| Grain size test | One sample for each batch on two test tubes |
| Ray detection | Per piece |
| Underwater air tightness test | Per piece |
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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