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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.
隐藏域元素占位
- Description
- 参数
- Technical Info
- MFG Process
- Packaging
- Q&A
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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.

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Technical Specification of Stainless Steel Seamless Pipe/SS SMLS Pipe
Designation
GB (New)
GB (Old)
ASTM A959
JIS G 4303
JIS G 4311ISO/TS 15510
ISO 4955EN 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
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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
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S31688
06Cr18Ni12Mo2Cu2
0Cr18Ni12Mo2Cu2
-
SUS316J1
-
-
-
S31683
022Cr18Ni14Mo2Cu2
00Cr18Ni14Mo2Cu2
-
SUS316J1L
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-
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Manufacturing Process of Stainless Steel Seamless Pipe/SS SMLS Pipe



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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.
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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.

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