| Type: | Stainless Steel Pipes |
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| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
| Grade: | 300 Series |
| Certification: | ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS |
| Shape: | Round |
| Technique: | Cold Rolled |
| Samples: |
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| Customization: |
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Audited Supplier There are many similarities between grade stainless steel pipes and industrial stainless steel pipes, but there are also some key differences between them. Here are some suggestions on how to distinguish between these two types of pipelines:
1. Usage: Sanitary grade stainless steel pipes are mainly used in industries such as food, medicine, and biotechnology, and their inner walls are required to be smooth, free of impurities, and easy to clean. Industrial stainless steel pipes are widely used in industries such as petroleum, chemical, and power, and require high pressure and corrosion resistance of pipelines. In terms of pressure resistance, the pressure resistance performance of sanitary grade stainless steel pipes is usually lower than that of industrial pipes. As for the size, the regulations of different standards (such as 3A, DIN, etc.) are also different. During the production process, the wall thickness can be maintained within the range required by the customer.
2. Material: 304 stainless steel industrial pipes have relatively loose requirements for chemical elements. According to different requirements for temperature resistance and corrosion resistance, different types of materials are usually required, and special materials can also be customized according to customer needs. However, sanitary grade stainless steel pipes have strict regulations on the content of major elements such as chromium, nickel, sulfur, and carbon. The commonly used materials are American standard 316 or 316L (DIN standard 1.4434, etc.) and 304 stainless steel.
3. Surface treatment: From the appearance, the industrial grade stainless steel pipe has a snow-white appearance. And sanitary grade stainless steel pipes are polished both inside and outside, with a smooth surface like a mirror. The surface treatment requirements for sanitary grade stainless steel pipes are higher, usually requiring polishing, electrolytic polishing, and other treatments until the inner wall mesh reaches 0.4 μ About m to achieve higher cleanliness and smoothness. The surface treatment requirements for industrial stainless steel pipes are relatively low, and methods such as acid washing and sandblasting can be used for treatment.
4. Testing standards: The testing standards for sanitary grade stainless steel pipes are more stringent and need to comply with relevant national and industry standards. For example, for food grade stainless steel pipes, they need to comply with relevant standards such as GB/T 12771-2017 "Metal Materials and Products in Contact with Food". The testing standards for industrial stainless steel pipes are relatively loose, mainly based on the technical requirements of the manufacturer for testing.
5. Price: Due to the high production process and material requirements of sanitary grade stainless steel pipes, their prices are usually higher than industrial stainless steel pipes.
6. Tolerance: The types of seamless sanitary stainless steel pipes include seamless sanitary stainless steel pipes and seamless sanitary stainless steel pipes. Its characteristics include high-precision tubes, with an outer diameter limit deviation of ± 0.02mm, an inner diameter limit deviation of ± 0.025mm, and an inner hole circumference tolerance of 0.020mm. The outer diameter range is 8mm to 60mm, the wall thickness range is 0.4mm to 0.9mm, and the steel pipe length range is 1.5mm to 6.0mm.
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Material
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200 300 400 Series stainless steel
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Grade
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201 202 301 303 304 304L 309 309S 310 310S 316 316L 316Ti 317L 321 2205 2507 409 409l 410 410S 420 420J1 420J2 430 441 444 904L
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Standard
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AiSi ASTM JIS DIN EN BS
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Tech
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cold rolled / hot rolled
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Type
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Welded / Seamless
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Production technique
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*ss seamless pipe: round steel preparation--heating--hot-rolled--cut head--Pickling--grinding--lubricating--cold rolled-- greased-solution--heat treatment--straightening--cut pipe--Pickling--Product testing. *ss welded pipe: raw material(belt or plate)--slitting--welding pipe--repairing--polishing--inspection(printing)--packaging--shipping(warehousing) (decorative welded pipe). |
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Section Shape
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round, square, rectangle
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Thickness
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0.3MM-3MM
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OD(Outer Diameter)
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6mm - 2500mm
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Normal size
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18mm - 60mm
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Length
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5.8m, 6m, 12m or as per customer's request
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Tolerance
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Outer diameter: ±0.1mm / Thickness: ±0.02mm / Length: ±1cm
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Processing Service
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Bending, Welding, Decoiling, Punching, Cutting, Moulding
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Surface Treatment
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pickled, brightened, annealed, polished(#180, 240, 320, 400, 500, 600, 700, 800 grid), colored
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Payment
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T/T terms, 30% pre-payment, 70% balance see B/L copy
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Delivery Time
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5-15 days for ordinary orders (standard orders <=50 ton); specified orders needs final confirmation as per customer's request
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| No | Grade (EN) | Grade (ASTM/UNS) | C | N | Cr | Ni | Mo | Others |
| 1 | 1.4301 | 304 | 0.04 | - | 18.1 | 8.3 | - | - |
| 2 | 1.4307 | 304L | 0.02 | - | 18.2 | 10.1 | - | - |
| 3 | 1.4311 | 304LN | 0.02 | 0.14 | 18.5 | 8.6 | - | - |
| 4 | 1.4541 | 321 | 0.04 | - | 17.3 | 9.1 | - | Ti 0.24 |
| 5 | 1.4550 | 347 | 0.05 | - | 17.5 | 9.5 | - | Nb 0.012 |
| 6 | 1.4567 | S30430 | 0.01 | - | 17.7 | 9.7 | - | Cu 3 |
| 7 | 1.4401 | 316 | 0.04 | - | 17.2 | 10.2 | 2.1 | - |
| 8 | 1.4404 | 316L/S31603 | 0.02 | - | 17.2 | 10.2 | 2.1 | - |
| 9 | 1.4436 | 316/316LN | 0.04 | - | 17 | 10.2 | 2.6 | - |
| 10 | 1.4429 | S31653 | 0.02 | 0.14 | 17.3 | 12.5 | 2.6 | - |
| 11 | 1.4432 | 316TI/S31635 | 0.04 | - | 17 | 10.6 | 2.1 | Ti 0.30 |
| 12 | 1.4438 | 317L/S31703 | 0.02 | - | 18.2 | 13.5 | 3.1 | - |
| 13 | 1.4439 | 317LMN | 0.02 | 0.14 | 17.8 | 12.6 | 4.1 | - |
| 14 | 1.4435 | 316LMOD /724L | 0.02 | 0.06 | 17.3 | 13.2 | 2.6 | - |
| 15 | 1.4539 | 904L/N08904 | 0.01 | - | 20 | 25 | 4.3 | Cu 1.5 |
| 16 | 1.4547 | S31254/254SMO | 0.01 | 0.02 | 20 | 18 | 6.1 | Cu 0.8-1.0 |
| 17 | 1.4529 | N08926 Alloy25-6mo | 0.02 | 0.15 | 20 | 25 | 6.5 | Cu 1.0 |
| 18 | 1.4565 | S34565 | 0.02 | 0.45 | 24 | 17 | 4.5 | Mn3.5-6.5 Nb 0.05 |
| 19 | 1.4652 | S32654/654SMO | 0.01 | 0.45 | 23 | 21 | 7 | Mn3.5-6.5 Nb 0.3-0.6 |
| 20 | 1.4162 | S32101/LDX2101 | 0.03 | 0.22 | 21.5 | 1.5 | 0.3 | Mn4-6 Cu0.1-0.8 |
| 21 | 1.4362 | S32304/SAF2304 | 0.02 | 0.1 | 23 | 4.8 | 0.3 | - |
| 22 | 1.4462 | 2205/ S32205 /S31803 | 0.02 | 0.16 | 22.5 | 5.7 | 3 | - |
| 23 | 1.4410 | S32750/SAF2507 | 0.02 | 0.27 | 25 | 7 | 4 | - |
| 24 | 1.4501 | S32760 | 0.02 | 0.27 | 25.4 | 6.9 | 3.5 | W 0.5-1.0 Cu0.5-1.0 |
| 25 | 1.4948 | 304H | 0.05 | - | 18.1 | 8.3 | - | - |
| 26 | 1.4878 | 321H/S32169/S32109 | 0.05 | - | 17.3 | 9 | - | Ti 0.2-0.7 |
| 27 | 1.4818 | S30415 | 0.15 | 0.05 | 18.5 | 9.5 | - | Si 1-2 Ce 0.03-0.08 |
| 28 | 1.4833 | 309S S30908 | 0.06 | - | 22.8 | 12.6 | - | - |
| 29 | 1.4835 | 30815/253MA | 0.09 | 0.17 | 21 | 11 | - | Si1.4-2.0 Ce 0.03-0.08 |
| 30 | 1.4845 | 310S/S31008 | 0.05 | - | 25 | 20 | - | - |
| 31 | 1.4542 | 630 | 0.07 | - | 16 | 4.8 | - | Cu3.0-5.0 Nb0.15-0.45 |
Q: ARE YOU FACTORY OR TRADER?
A: Our company is a manufacturer of magnetic stainless steel coil since 2009. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.
Q: WHICH MATERIAL/PRODUCTS YOU CAN PROVIDE?
A: Stainless Steel Coils / Strips, Stainless Steel Sheets / Plates, Stainless Steel Circles / Discs, Decorative Stainless Steel Sheets.
Q: HOW TO GET A SAMPLE?
A: FREE samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.
Q: HOW TO VISIT YOUR FACTORY?
A: Most of the main cities have flights to Wuxi; you can take flight to Wuxi Shuofang International Airport.
If you come from Shanghai, it will take 2 hours by flight (every day 5 flights).
If you come from Hongkong, it will take 1 hour by flight (every day 1 flight around noon time).
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Audited Supplier 
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