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Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
Stainless Seamless Steel Pipe
  • Keywords: stainless steel seamless pipe, 304 stainless seamless pipe, 316 stainless seamless pipe, stainless steel seamless pipe manufacturer
  • Size Range: 1/4″ – 36″ NPS (Larger sizes available upon request)
  • Schedules: 10, 10s, 40, 40s, 80, 80s, 120, 160 (Custom wall thicknesses available upon request)
  • Grades: 304, 304L, 316, 316L, 316L, 317L, 321 , 347
  • Standards: ASTM / ASME

Product Description of Stainless Seamless Steel Pipe

Stainless seamless steel pipe is a hollow tubular product manufactured from stainless steel alloy without any welded seam or joint. It is produced by extruding, drawing, or piercing a solid steel billet through a mandrel to create a seamless hollow tube. Stainless steel pipe is manufactured in either welded or seamless form. Stainless seamless steel pipe is a solid ingot, piercing a hole through its length, and then drawing through dies to form the final size. In piping dimensions, the inside diameter decreases as the wall thickness increases on all Nominal pipe sizes (NPS). The wall thicknesses are specified as ‘schedules’, which are covered within the specifications of ASTM and ASME. Pipe is offered in 20’lengths, but can be supplied in certain sizes in double random (+/- 40’) to meet certain project needs. These screws have a head designed with an internal hexagonal shape, requiring a specialized hexagonal wrench for tightening. Hex socket screws can provide a more compact head design than external hexagon screws, suitable for applications with limited space.

Standard of Stainless Seamless Steel Pipe


Chemical Composition of Stainless Seamless Steel Pipe

Grade

UNS No.

Carbon

Manganese

Phosphorus

Sulfur

Silicon

Chromium

Nickel

Molybdenum

TP304

S30400

0.08

2.00

0.045

0.030

1.00

18.0–20.0

8.0–11.0

TP304L

S30403

0.035

2.00

0.045

0.030

1.00

18.0–20.0

8.0–13.0

TP316

S31600

0.08

2.00

0.045

0.030

1.00

16.0–18.0

11.0–14.0

2.0–3.0

TP316L

S31603

0.035

2.00

0.045

0.030

1.00

16.0–18.0

10.0–14.0

2.0–3.0


Mechanical Properties of Stainless Seamless Steel Pipe

Grade

UNS No.

Tensile Strength (MPa)

Yield Strength (MPa)

Hardness (HRB max)

TP304

S30400

515

205

92

TP304L

S30403

485

170

92

TP316

S31600

515

205

95

TP316L

S31603

485

170

95


Specification of Stainless Seamless Steel Pipe

Size

6NB to 1200NB IN

Schedule

SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.

Type

Round, Square, Rectangle, Hydraulic, Honed Tubes

Length

Single Random, Double Random & Cut Length

End

Plain End, Beveled Ends


Manufacturing Process of Stainless Seamless Steel Pipe

Seamless Hot Rolling Process: Round Pipe Billet → Heating → Perforation → Shaping (Three Roll Skew Rolling / Continuous Rolling / Extrusion) → Sizing / Diameter Reduction → Cooling → Straightening → Hydrostatic Test / Flaw Detection → Marking → Storage

Seamless Cold Rolling (Cold Drawn) Process: Round Pipe Billet → Heating → Perforation → Annealing → Pickling → Oil Coating (Copper) → Multi-Pass Cold Drawing → Heat Treatment → Straightening → Hydrostatic Test → Marking → Storage


Application of Stainless Seamless Steel Pipe

  • Oil & Gas Industry.

  • Chemical & Petrochemical Industry.

  • Food Processing & Dairy.

  • Pharmaceutical Industry.

  • Power Generation.

  • Marine & Shipbuilding.

  • Architecture & Construction.

  • Automotive Industry.

  • Medical Devices.

  • Water Treatment & Desalination.

  • Textile Industry.

  • Pulp & Paper Industry.

  • Defence & Aerospace.


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