Wuxi Shuangti Stainless Steel Co., Ltd.
Wuxi Shuangti Stainless Steel Co., Ltd.
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Product description
| Model | Stainless Steel tube |
| Standard | ASTM A213,ASTM A312,ASTM A789,ASTM A790 |
| Material Grade | 201/202/304/316/S31803/S32750 |
| Outer Diameter | 0.1mm--219.1mm |
| Thickness | 0.05mm - 20mm |
| Length | ≤12000mm or as per customer request |
| Tolerance | a) Outer Diameter: +/- 0.2mm b) Thickness: +/- 10% OR as customer request |
| Surface | Satin / Hairline :180#, 320# Polish : 400# ,600# ,800# or Mirror surface |
| Application | Decoration ,( Processed into railings, handrails, doors and Windows), medical,industry,etc |
| Packaging | Plastic bag/woven packing (please send details packing to us if you have other requirements) |
Stainless Steel Surface Treatments
1D—The surface has discontinuous particles, which is also called matte. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D—Slightly shiny silver-white. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B—Silver white and better gloss and flatness than 2D surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
BA—The surface gloss is excellent and has a high reflectivity, just like the mirror surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + quenched and tempered rolling.
No.3—has better gloss and rough surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 100 ~ 120 abrasive materials.
No.4—has better gloss and fine lines on the surface. Processing technology: Polishing and tempering rolling of 2D products or 2B with 150 ~ 180 abrasive materials.
HL—Silver gray with hair streaks. Processing technology: Polish the 2D product or 2B product with a suitable size of abrasive material to make the surface appear continuous grain.
MIRROR Machining —is in a mirror state. Processing technology: 2D or 2B products are ground and polished to a mirror effect with a suitable abrasive material.
| Surface Finish | Definition | Application |
| 2B | Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
| BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
| NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
| NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
| HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building construction |
| NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe. |
Corresponding photo of stainless steel surface treatment
Stainless Steel Composition Contents Proportion Table
| 200 series | |||||||||||||
| Grade | chemical composition (%) | mechanic performances | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | N | Cu | Y.S(N/mm2) | T.S(N/mm2) | Elog(%) | HRB | |
| 201(1%nickel) | ≤0.15 | ≤1.00 | 8∽11 | ≤0.060 | ≤0.030 | 0.9∽1.5 | 15∽17 | ≤0.25 | 1.5∽2 | ≥310 | ≥655 | ≥35 | ≤105 |
| 202(4%nickel) | ≤0.15 | ≤1.00 | 6∽9 | ≤0.060 | ≤0.030 | 3.5∽5 | 15∽17 | ≤0.25 | 1.5∽2 | ≥260 | ≥620 | ≥40 | ≤100 |
| The specification of type 201&202 in conformity with Mill Standard | |||||||||||||
| 300 series | |||||||||||||
| Grade | chemical composition (%) | mechanic performances | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Y.S(N/mm2) | T.S(N/mm2) | Elog(%) | HRB | ||
| 304 | ≤0.08 | ≤0.75 | ≤2 | ≤0.045 | ≤0.030 | 8∽10 | 18∽20 | ≥205 | ≥520 | ≥40 | ≤90 | ||
| 301 | ≤0.15 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 6∽8 | 16∽18 | ≥205 | ≥515 | ≥40 | ≤95 | ||
| 316 | ≤0.08 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 10∽14 | 16∽18 | 2∽3 | ≥205 | ≥515 | ≥40 | ≤90 | |
| 316L | ≤0.03 | ≤1.00 | ≤2 | ≤0.045 | ≤0.030 | 12∽15 | 16∽18 | 2∽3 | ≥170 | ≥480 | ≥40 | ≤95 | |
| The specification of type 301,302,304,304L,309S,310S,316,316L,321,347 in conformity with ASTM & JIS criteria | |||||||||||||
| 400 series | |||||||||||||
| Grade | chemical composition (%) | mechanic performances | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Y.S(N/mm2) | T.S(N/mm2) | Elog(%) | HRB | ||
| 430 | ≤0.12 | ≤1.00 | ≤1 | ≤0.040 | ≤0.030 | 16∽18 | ≥450 | ≥205 | ≥22 | ≤88 | |||
| The specification of type 430,410,420J1.420J2 in conformity with ASTM & JIS criteria | |||||||||||||
| 630 series | |||||||||||||
| Grade | chemical composition (%) | mechanic performances | |||||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Nb | Y.S(N/mm2) | T.S(N/mm2) | Elog(%) | HRB | |
| 630 | ≤0.07 | ≤1.00 | ≤1.00 | ≤0.035 | ≤0.030 | 6.50∽7.50 | 15.50∽17.50 | 0.15∽0.45 | ≥450 | ≥205 | ≥22 | ≤88 | |
| The specification of type 630 in conformity with ASTM & JIS standard | |||||||||||||
product photos
FAQ
Q1. Can I have a sample order for your products ?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q2. What about the lead time?
A: 3-5 days for Sample preparing ,8-10 working days for mass production.
Q3. Do you have any MOQ limit for stainless steel products ?
A: Low MOQ, 1pc for sample checking is available.
Q4. How do you ship the goods and how long does it take to arrive?
A: Ship by DHL, UPS, FedEx or TNT. It takes 3-5 days to arrive. Airline and sea shipping also optional.
Q5. How to proceed an order for stainless steel products ?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We are going to arrange the production.
Q6. Is it OK to print my logo on stainless products which we had ordered before from your company ?
A: Yes. Please inform us formally before our production.
Q7: Do you offer guarantee for the products?
A: Yes, we offer 1 years warranty to our products.
Q8: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.001%.
Secondly, during the guarantee period, we will send new stainless steel products with new order for small quantity. For defective batch products, we will recall them and resend them to you or we can discuss the solution including re-call according to real situation.
Q9. What main products are you ready to provide to us ?
1 stainless steel hot rolled plate
2. Stainless Steel cold rolled sheet
3. Stainless steel pipes or tubes .
4. Stainless Steel angles , beam , channels .
5. Stainless round bars
6. Stainless processing pieces .
7. Stainless laser cutting irregular pieces .
8. Aluminium plates
9. Alloyed steel
10. Nonferrous metals .
Q10 payment terms :
Normally we accept TT , LC , DP, west union , paypal .