Stainless steel seamless pipe is a long strip of steel with a hollow section and no seams around it. The thicker the wall thickness of the product, the more economical and practical it is, and the thinner the wall thickness, the higher its processing cost will be.
The process of this product determines its limited performance. Generally, seamless steel pipes have low precision: uneven wall thickness, low brightness inside and outside the tube, high cost of cutting to length, and pits and black spots on the inside and outside are not easy to remove; its detection and Shaping must be handled offline. Therefore, it embodies its superiority in terms of high pressure, high strength, and mechanical structural materials.
Stainless steel pipe is widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural components. In addition, when the bending and torsional strength are the same, the weight is light, so it is also widely used in the manufacture of mechanical parts and engineering structures. Also used as furniture and kitchenware.
| Material | Stainless Steel Seamless Pipe/Tube |
| Standard | ASME, ASTM, EN, BS, GB, DIN, JIS, etc |
| Steel Grade | 200 Series: 201,202 300 Series: 301,304,304L,316,316L,316Ti,309,310,317,321 400 Series: 409,410,420,430,436,444,441,440c Duplex Steel: 904L,2205,2507,2101,2520,2304 |
| Wall Thickness | 0.1-60mm |
| Diameter | 6mm-2500mm (3/8"-100") |
| Manufacturing Method | Cold Rolled, Hot Rolled |
| Manufacturing Technique | Seamless, Welded (ERW,EFW,Seamless,Spiral Welded) |
| Shape | Round, Square, Rectangular, Oval |
| Surface | Primary, Bright Polished, Hairline, Mirror,BA,2B |
| Color | Golden, Champagne gold, Rose gold, Brown, Bronze, Brass, Black, etc. |
| Delivery Time | In stock: 5-10 days Manufacturing: 10-20 days |
| MOQ | 5 Ton |
| Austenitic Stainless Steel | 201, 301, 304, 305, 310, 314, 316, 321, 347, 370, etc |
| Martensitic Stainless Steel | 410, 414, 416, 416, 420, 431, 440A, 440B, 440C, etc |
| Duplex Stainless Steel | S31803, S32101, S32205, S32304, S32750, etc |
| Ferritic Stainless Steel | 429, 430, 433, 434, 435, 436, 439, etc |
Stainless Steel Grade Comparison Table
| China | Japan | America | Korean | EU | Australia | Density t/m |
| GB/T20878 | JIS | ASTM | KS | BSEN | AS | |
| 12Cr13 | SUS403 | 403 | STS403 | - | 403 | 7.75 |
| 20Cr13 | SUS420J1 | 420 | STS420J1 | 1.4021 | 420 | 7.75 |
| 30Cr13 | SUS420J2 | - | STS420J2 | 1.4028 | 420J2 | 7.75 |
| 10Cr17 | SUS430 | 430 | STS430 | 1.4016 | 430 | 7.70 |
| 68Cr17 | SUS440A | 440A | STS440A | - | 440A | 7.70 |
| 06Cr19Ni10 | SUS304 | 304 | STS304 | 1.4301 | 304 | 7.93 |
| 022Cr19Ni10 | SUS304L | 304L | STS304L | 1.4306 | 304L | 7.93 |
| 06Cr17Ni12Mo2 | SUS316 | 316 | STS316 | 1.4401 | 316 | 7.98 |
| 022Cr17Ni12Mo2 | SUS316L | 316L | STS316L | 1.4404 | 316L | 7.98 |
| 06Cr18Ni11Ti | SUS321 | 321 | STS321 | 1.4541 | 321 | 7.93 |
| 06Cr18Ni11Nb | SUS347 | 347 | STS347 | 1.455 | 347 | 7.98 |
| Standard | Material | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation(%) | Hardness(HRB) |
| ASTM A240 | 201 | ≥515 | ≥260 | ≥40 | ≤95 |
| 304 | ≥515 | ≥205 | ≥40 | ≤92 | |
| 316L | ≥485 | ≥170 | ≥30 | - | |
| 430 | ≥450 | ≥205 | ≥22 | ≤89 |
| Itme | Surface finishing | Surface finishing methods | Main application |
| NO.1 | HR | Heat treatment after hot rolling, pickling, or with treatment | For without the purpose of the surface gloss |
| NO.2D | Without the SPM | Method of heat treatment after cold rolling, pickling surface roller with wool or eventually a light rolling a matte surface processing | General materials,building materials. |
| NO.2B | After SPM | Giving No.2 processing materials appropriate method of cold light sheen | General materials, building materials ( most of the goods are processed ) |
| BA | Bright annealed | Bright heat treatment after cold rolling , in order to be more shiny, cold light effect | Automotive parts, home appliances, vehicles, medical equipment, food equipment |
| NO.3 | Shiny, coarse grain processing | The NO.2D or NO.2B processing timber No. 100-120 polishing abrasive grinding belt | Building materials, kitchen supplies |
| NO.4 | After CPL | The NO.2D or NO.2B processing timber No. 150-180 polishing abrasive grinding belt | Building materials, kitchen supplies, vehicles, medical equipment, food equipment |
| 240# | Grinding of fine lines | The NO.2D or NO.2B processing timber 240 polishing abrasive grinding belt | Kitchen appliances |
| 320# | More than 240 lines of grinding | The NO.2D or NO.2B processing timber 320 polishing abrasive grinding belt | Kitchen appliances |
| 400# | Close to BA luster | The MO.2B timber 400 polishing wheel polishing method | Building materials, kitchen utensils |
| HL (hair lines) | Polishing line having a long continuous processing | In a suitable size ( usually mostly No. 150-240 grit ) abrasive tape for as long as the hair, having a continuous processing method of polishing line | The most common building materials processing |
| NO.6 | NO.4 processing less than the reflection , the extinction | NO.4 processing material used for polishing Tampico brushing | Building materials, decorative |
| NO.7 | Highly accurate reflectance mirror processing | No. 600 of the rotary buff with a polishing | Building materials, decorative |
| NO.8 | Highest reflectivity mirror finish | Fine particles of abrasive material in order polishing , mirror polishing with a polishing | Building materials, decorative, mirrors |
Stainless steel pipes are divided into ordinary carbon steel pipes, high-quality carbon structural steel pipes, alloy structural pipes, alloy steel pipes, bearing steel pipes, stainless steel pipes, and bimetallic composite pipes, coatings and coating pipes for saving precious metals and meeting special requirements. . Stainless steel tubes are available in a wide variety of applications, with different technical requirements and different production methods. The outer diameter of the currently produced steel pipe ranges from 0.1 to 4500 mm and the wall thickness ranges from 0.01 to 250 mm. In order to distinguish the characteristics, the steel pipes are usually classified as follows.
| Item | Dimension | Thickness | Tolerance | Length | |
| mm | mm | OD/Side | Thickness | Random length Fixed length Max length:22m | |
| Seamless | OD:4-914 | 0.5-50 | +/-0.2mm | +/-0.05mm | |
| Welded | OD: 6- 630 | 0.15-25 | +/-0.2mm | +/-0.05mm | |
| Square | 10*10-100*100 | 0.25-4 | +/-0.2mm | +/-0.05mm | |
| Rec. | 6*10-42*114 | 0.25-4 | +/-0.2mm | +/-0.05mm | |
| Material | TP304,TP304L,TP304/304L,TP304H,TP321,TP321H,TP321/321H,TP316L,TP316/316L,TP316H,TP316TI,TP317L,TP310S,TP347/347H, 904L,S32205,S31803,S32750,S31500 | ||||
| Usage | Pipeline Transport, Medical Equipment, Heat Ex-changer, Boiler Pipe, Hydraulic/Automobile Pipe,Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining,Construction & Decoration | ||||
| Surface | Polished,Bare Black ,Pickled ,Painting, Anti-corrosion,Bevel,Plastic Cap,POE&TOE | ||||
Stainless steel pipe is an economical cross-section steel and an important product in the steel industry.
It can be widely used in life decoration and industry. Many people on the market use it to make stair railings, window guards, furniture, etc. The two common materials are 201 and 304.
Stainless steel pipe is a hollow long round steel, which is widely used in petroleum, chemical, meducal, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural parts.
In addition, when the bending and torsion strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. Also often used as furniture and kitchen utensils.
We offer different modes of transport depending on the customer's destination: rail transport and ship transport,etc.The Shipping Mark shall consist of: Trade mark, Seller's name, Product name, Applicable standards,Specifications, Package No., Contract No., Heat No., Production date, Weighing method, Net weight, Gross Weight, Consignee and Protection symbols, etc.
Package offer standard export seaworthy package,or as required. Ensure that the surface of the product does not produce scratches. Usually used Plastic Bag+PVC Film+Wooden Case.
Q1: Can you send samples?
A: Yes, we can provide customers with free samples and express shipping service to all over of the world.
Q2: What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirements, and the quantity to order.
Q3: It's my first time to import steel products, can you help me with it?
A:Sure, we have the shipping agent to arrange the shipment, and we will work together.
Q4: What ports of shipment are there?
A:Under normal circumstances, we ship from Tianjin, Shanghai,Ningbo ports and you can specify other ports according to your needs.
Q5: What about product prices information?
A:Prices varies according to periodic price changes of raw materials.
Q6: What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shipment or based on BL copy or LC at sight.
Q7: Do you provide ODM services?
A: Yes, if you have your own design, we can produce according to your specification and drawing.
Q8: What are the certifications for your products?
A: ISO 9001, MTC, third parties' inspections such SGS, BV, ect. are available.
Q9: How long does your delivery time take?
A:In general, it is within 7-15 days, and may be longer if the quantity is extremely large or special circumstances occur.
Q10: How many countries you already exported to?
A:We have exported to America, Canada, Brazil, Chile, Colombia, Russia, Ukraine, Thailand, Myanmar, Vietnam, India, Spain, Malaysia etc. countries. Our export experience is rich, we familiar with different market demands, can help customers avoid a lot of trouble.
Q11: Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q12:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed and customers can appoint third parties to inspect the products before loading too.
High Quality, Best Price, Adequate Stock, Strict Quality Inspection, First Class Service
Any requirements for our SS Pipe,welcome to contact us for more details!
