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Stainless Steel Seamless Pipe/SS SMLS Pipe

Stainless Steel Seamless Pipe /SS SMLS Pipe, made from stainless steel alloys without welded seams, offer superior strength, corrosion resistance, and high-temperature resistance. They are manufactured through casting, piercing, expanding, and hot rolling to achieve precise dimensions, followed by surface treatments and quality testing. These pipes are widely used in industries like petrochemicals, food processing, and pharmaceuticals, especially for high-pressure applications. Their smooth surfaces reduce deposit accumulation, and their uniform structure ensures higher durability than welded pipes. With excellent corrosion resistance and high tensile strength, they are ideal for demanding environments such as boilers, heat exchangers, and cryogenic storage.

Grade:

304, 304L, 316, 316L, 201, 202, 301, 347/H, 316Ti, 309S, 310S.

Size:

Outer Diameter: 6mm - 830mm, Wall Thickness: 0.5mm - 60mm.

Standard:

Austenitic Stainless Steel: GB/T14976, GB/T13296, GB/T14975, GB/T5310, ASTM A312, A213, A269, JIS3459, JIS3463, EN10216, GOST9941. Super Austenitic Stainless Steel: GB/T14976, GB/T13296, GB/T14975, GB/T5310, ASTM A312, A213, A269, JIS3459, JIS3463, EN10216, GOST9941. Nickel Alloys: ASTM B161/B163/B167/B07/B444/B622/B668/B677/B722/B729. (Super) Duplex Steel: ASTM A789/A790, GB/T21832, GB/T21833.

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  • Description
  • 参数
  • Technical Info
  • MFG Process
  • Packaging
  • Q&A

    Stainless Steel Seamless Pipe /SS SMLS Pipe is a kind of pipes made from stainless steel materials without welded seams, offering excellent strength, corrosion resistance, and high-temperature resistance. They are widely used in industries such as petrochemicals, construction, and food processing. The manufacturing process includes the following steps: Melting and Casting: Melting stainless steel alloys and casting them into billets. Piercing and Expanding: The billets are heated and pierced to form hollow pipe billets, which are then expanded and stretched to achieve the required outer diameter and wall thickness. Hot Rolling: The pipe billets are further heated and processed through hot rolling to ensure precise dimensions. Cooling and Cutting: The pipes are cooled and cut to the required length. Surface Treatment: Oxides are removed to improve the smoothness of the pipe surface. Inspection and Testing: The pipes undergo tests to ensure their dimensions, strength, and corrosion resistance meet the required standards. Seamless pipes, with no welded seams, have uniform strength and high durability, making them suitable for use in high-demand environments.

    Stainless Steel Seamless Pipe /SS SMLS Pipe offer excellent corrosion resistance, high-temperature resistance, and strength, making them suitable for industries such as petrochemicals, food processing, and pharmaceuticals. With no welds, their structure is uniform, and their strength and pressure resistance are superior to welded pipes, making them ideal for high-pressure vessels and pipelines. The smooth inner and outer surfaces reduce the accumulation of deposits, making them suitable for fluid transmission systems. They also have good oxidation resistance, low-temperature performance, and can withstand high pressure, tensile strength, and corrosion, making them widely used in demanding environments. Various specifications and materials (such as 304, 316, etc.) meet different needs and are commonly used in boilers, heat exchangers, and cryogenic storage applications.

     

    Specification

    1. Standards: Austenitic Stainless Steel: GB/T14976, GB/T13296, GB/T14975, GB/T5310, ASTM A312, A213, A269, JIS3459, JIS3463, EN10216, GOST9941.  Super Austenitic Stainless Steel: GB/T14976, GB/T13296, GB/T14975, GB/T5310, ASTM A312, A213, A269, JIS3459, JIS3463, EN10216, GOST9941.  Nickel Alloys: ASTM B161/B163/B167/B07/B444/B622/B668/B677/B722/B729. (Super) Duplex Steel: ASTM A789/A790, GB/T21832, GB/T21833. 
    2. Grades: 304, 304L, 316, 316L, 201, 202, 301, 347/H, 316Ti, 309S, 310S.
    3. Steel Types: Austenitic, Super Austenitic, Nickel Alloys, (Super) Duplex.  
    4. Processing Methods: Hot-rolled (extruded, expanded) steel pipes W-H, Cold-drawn (rolled) steel pipes W-C. 
    5. Dimensions: Outer Diameter: 6mm - 830mm, Wall Thickness: 0.5mm - 60mm.  
    6. Length: Hot-rolled (extruded, expanded) steel pipes: 2000mm - 12000mm. Cold-drawn (rolled) steel pipes: 1000mm - 12000mm. Custom lengths available upon customer request.  
    7. Surface Finish: Bright Surface (B), Hot-rolled Surface (HR), Pickled Surface (P), Polished Surface (POL), Brushed Surface (BR/SAT), Electropolished Surface (EP), Rolled Surface (R), Passivated Surface (PASS), Heat-treated Surface (HT), Sandblasted Surface (SB).  
    8. Ends: Plain End (PE), Beveled End (BE)

     

      

     

    Application

    Stainless Steel Seamless Pipes /SS SMLS Pipes are widely used in petroleum and natural gas extraction and transportation systems, high-pressure reactors and piping in chemical plants, liquid transfer pipelines in food processing, sterile fluid systems in pharmaceuticals, and heat exchangers, boilers, and cooling systems in petrochemical industries. They are also applied in high-demand sectors like marine, shipbuilding, and aerospace, particularly in low-temperature and high-temperature environments, such as in liquefied natural gas (LNG) storage and transportation.

     

      

  • Technical Specification of Stainless Steel Seamless Pipe/SS SMLS Pipe

     

    Designation

    GB (New)

    GB (Old)

    ASTM A959

    JIS G 4303
    JIS G 4311

    ISO/TS 15510
    ISO 4955

    EN 10088-1

    ΓOCT 5632

    S30210

    12Cr18Ni9

    1Cr18Ni9

    S30200, 302

    SUS302

    X10CrNi18-8

    X10CrNi18-8, 1.4310

    12X18H9

    S30408

    06Cr19Ni10

    0Cr18Ni9

    S30400, 304

    SUS304

    X5CrNi18-9

    X5CrNi18-10, 1.4301

    -

    S30403

    022Cr19Ni10

    00Cr19Ni10

    S30403, 304L

    SUS304L

    X2CrNi19-11

    X2CrNi19-11, 1.4306

    03X18H11

    S30458

    06Cr19Ni10N

    0Cr19Ni9N

    S30451, 304N

    SUS304N1

    X5CrNiN18-8

    X5CrNiN19-9, 1.4315

    -

    S30478

    06Cr19Ni9NbN

    0Cr19Ni10NbN

    S30452, XM-21

    SUS304N2

    -

    -

    -

    S30453

    022Cr19Ni10N

    00Cr18Ni10N

    S30453, 304LN

    SUS304LN

    X2CrNiN18-9

    X2CrNiN18-10, 1.4311

    -

    S30908

    06Cr23Ni13

    0Cr23Ni13

    S30908, 309S

    SUS309S

    X12CrNi23-13

    X12CrNi23-13, 1.4833

    -

    S31008

    06Cr25Ni20

    0Cr25Ni20

    S31008, 310S

    SUS310S

    X8CrNi25-21

    X8CrNi25-21, 1.4845

    10X23H18

    S31608

    06Cr17Ni12Mo2

    0Cr17Ni12Mo2

    S31600, 316

    SUS316

    X5CrNiMo17-12-2

    X5CrNiMo17-12-2, 1.4401

    -

    S31603

    022Cr17Ni12Mo2

    00Cr17Ni14Mo2

    S31603, 316L

    SUS316L

    X2CrNiMo17-12-2

    X2CrNiMo17-12-2, 1.4404

    03X17H14M3

    S31609

    07Cr17Ni12Mo2

    1Cr17Ni12Mo2

    S31609, 316H

    -

    -

    X3CrNiMo17-13-3, 1.4436

    -

    S31668

    06Cr17Ni12Mo2Ti

    0Cr18Ni12Mo3Ti

    S31635, 316Ti

    SUS316Ti

    X6CrNiMoTi17-12-2

    X6CrNiMoTi17-12-2, 1.4571

    08X17H13M2T

    S31658

    06Cr17Ni12Mo2N

    0Cr17Ni12Mo2N

    S31651, 316N

    SUS316N

    -

    -

    -

    S31653

    022Cr17Ni12Mo2N

    00Cr17Ni13Mo2N

    S31653, 316LN

    SUS316LN

    X2CrNiMoN17-12-3

    X2CrNiMoN17-13-3, 1.4429

    -

    S31688

    06Cr18Ni12Mo2Cu2

    0Cr18Ni12Mo2Cu2

    -

    SUS316J1

    -

    -

    -

    S31683

    022Cr18Ni14Mo2Cu2

    00Cr18Ni14Mo2Cu2

    -

    SUS316J1L

    -

    -

    -

     

     

     

  • Manufacturing Process of Stainless Steel Seamless Pipe/SS SMLS Pipe

     

     

  • There are two packaging options for the product of Shanghai BISCO International Corporation.

    1). When customers have no special requirements for packaging, the product will be packed in accordance with BISCO's standard, which entirely conforms to industry standards, and we guarantee the safety of storage and transportation of the product.

    2). When customers put forward special packaging requirements, BISCO will pack the product in line with the proposed requirements on the basis of ensuring the safety of its storage and transportation.

    Shanghai BISCO International Corporation has also established long-term and stable partnership with major logistics service providers. With their powerful transportation network, BISCO can deliver the product to customers safely at the first time.

     

  • 1. Why should I choose BISCO?

    experience in domestic and international business of metal materials and products, and the products have been exported to more than 50 countries and regions, providing professional services to global customers. BISCO’s sales have the experiences of domestic and international industrial production and engineering construction projects, who are able to assist customers in choosing the best products and answering project problems. Choose to cooperate with BISCO, which means you will have the full-process service and worry-free transactions.

     

    2. Is BISCO a trader or a manufacturer?

    BISCO has its own processing plant and has a large inventory of basic products. The raw materials are sourced from large-scaled mills, and established long-term and stable cooperative relations with them. BISCO can obtain raw materials at prices lower than the market, so its comprehensive leading cost and resource advantages enable products to be delivered to customers at the most competitive price.

     

    3. Can I visit BISCO’s company, warehouse and factory?

    YES! BISCO welcomes customers from all over the world to visit its company, warehouse and factory. How happy we are to have friends from afar! And this is also an opportunity for BISCO to show its corporate spiritual style to customers and seek long-term cooperation in the future.

     

    4. Can BISCO provide product customization services?

    YES! BISCO can provide customers with customized products according to their requirements. BISCO's excellent processing capabilities and advanced processing facilities can manufacture customized products with best quality at the first time.

     

    5. Can BISCO provide product samples?

    YES! For metal materials, BISCO can basically provide samples; for processed metal products, BISCO can help make samples.

     

    6. What are the payment terms of BISCO?

    BISCO accepts payment by TT or LC. If it is by TT, 30% deposit are demanded. If it is by LC, only 100% irrevocable LC is acceptable. But of course, for special projects, payment terms are negotiable.

     

    7. How does BISCO ensure product quality?

    First of all, the raw materials used to produce metal products by BISCO are sourced from large-scaled mills, it will eliminate defective products from the source. Secondly, BISCO’s processing plant has advanced processing facilities and strict product packaging standards, the quality inspection of products executed by the independent quality inspection department before delivering products to customers will be completed. Finally, BISCO also allows customers to arrange pre-shipment inspection for the cargoes. From the source till the end, BISCO will ensure the quality of products.

     

    8. How about the after-sales service of BISCO?

    The sales of BISCO will follow up the order status in the whole process and provide customers with pre-sales, in-sales and after-sales services. Any questions can be consulted at any time. If sales cannot resolve the matter, BISCO also provides a feedback channel for customers and a specialist will follow up to deal with it. BISCO's pursuit is 100% customer satisfaction.

     

    9. How to get a quotation from BISCO as soon as possible?

    Click the button of Get a price on the product landing page to submit an inquiry, BISCO will quote you within 24 hours since receiving the inquiry. If there is an urgent purchase requisition, you can get in touch with BISCO in time through the contact information listed in Contact Us.

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