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Duplex 2205 Stainless Steel Tube GB/T21833 ASTM A276 S31083 Annealed Surface

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Duplex 2205 Stainless Steel Tube GB/T21833 ASTM A276 S31083 Annealed Surface

Brand Name : TORICH

Model Number : ASTM A276

Certification : ISO9001, ISO14001, TS16949

Place of Origin : ZHEJIANG, CHINA

MOQ : 5Tons

Price : negotiable

Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability : 5000Tons per Year

Delivery Time : 30-45 work days

Packaging Details : Stainless Steel Pipes are packed in wooden boxes in seaworthy packing.

Keyword : Stainless Steel Seamless Pipe

Material : Duplex 2205 Super Stainless Steel

OD : 21.3mm-711mm

WT : 1.65mm-30.75mm

Surface : Annealed, Brightly Annealed, Polish

Application : Pressure vessel, high pressure pipe line

Heat Treatment : Full Or Isothermal Anneal

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Products Description
TORICH GB/T21833 ASTM A276 S31083 Duplex 2205 Super Stainless Steel Seamless Pipe
Standard
GB/T21833 ASTM A276
Matrial
Duplex 2205 Stainless Steel
Size
WT: 1.65mm-30.75mm OD: 21.3-711mm Length: as customers' requirement
Technique
Hot Finish,cold Finish
Surface Treament
Annealed, Brightly Annealed, Polish
Application
Pressure vessel, high pressure pipe line, heat exchanger(chemical processing industry), oil and gas pipeline
Manufacture
Pipes shall be made by the seamless process and shall be either hot finished or cold finished.
Test
Tension Test, Flaring Test, Flange Test,
Reverse Test, Hardness Test,
Hydrostatic or Nondestructive Electric Test etc

Chemical Requirements

Steel Grade
C
Si
Mn
P
S
Cr
Ni
Mo
N
Duplex 2205
≤0.03
≤1.00
≤2.00
≤0.04
≤0.03
21.0~24.0
4.5~6.5
2.5~3.5
0.08~0.2

Mechanical Properties

Ts (Mpa)
El (%)
Hv
2.0t/2B
≥ 450
≥ 620
≥ 18
≤ 320

Superior Surface Finish:
The traditional annealing:
Open furnace---Oxygen atmosphere---form Scale, tarnish the material, For more than 12m tubes this method is hard to clean inner surface.
A special bright annealing:
Closed furnace---Intert atmosphere use noble gases(Nitrogen and argon) Preventing Oxygen to contact with material---Surface finish is clean, bright and precision, which is an excellent starting point for further process, like electro-polishing and mechanical polishing. For more than 12m tubes, this method is much cleaner smoother on both inner and outer surface.

Product Show
Duplex 2205 Stainless Steel Tube GB/T21833 ASTM A276 S31083 Annealed SurfaceDuplex 2205 Stainless Steel Tube GB/T21833 ASTM A276 S31083 Annealed Surface

QUALITY CONTROL:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking


100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

PACKING:
Each tube in a plastic bag, then put tubes in a seaworthy woven bag ,each unit weight 400kg-500kg/bundle.
With strong wood structure box packing by containers loading and shipping.
Or as customer's requirement.
20 ft container - GP: 5.8m (Length) * 2.13m (Width) * 2.18m (Hight) ------ Max Gross Weight: 25MT/container.
40 ft container - GP: 11.8m (Length) * 2.13m (Width) * 2.18m (Hight) ------ Max Gross Weight: 27MT/container.
40 ft container - HG: 11.8m (Length) * 2.13m (Width) * 2.72m (Hight) ------ Max Gross Weight: 27MT/container.
Port Shanghai

FAQ

Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact us













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