Stainless Steel Seamless Pipe

ASTM A312 / ASME SA312 seamless — common grades 304 / 316L / 321 / 904L


stainless steel pipes

Savoy Piping Inc. supplies Stainless Steel Seamless Pipe for buyers who need clear grade, size and test packages — not keyword-stuffed listings.

SS hub · Seamless pipe · Welded · Seamless tube · Duplex

What buyers should specify

Grade (and dual-cert if any), ASTM/ASME product spec, OD × wall or schedule, length, ends, NDE, and any NACE / IBR / PMI extras on the purchase order.

Typical applications

  • Process piping and utilities
  • Heat transfer and instrumentation tubing (where tube specs apply)
  • Food / pharma hygienic systems
  • Marine-adjacent service within grade PREN limits

Selection guidance

Match corrosion class first (304L → 316L → 317L/904L/duplex), then product form and testing. Ask for the grade page when you already know 304, 316L, 321, etc.

Seamless vs welded stainless pipe

ChooseWhenWatch-outs
Seamless (this page)Higher integrity / many process & high-pressure linesLead time can be longer in heavy walls
Welded / ERWCost / availability on larger OD when allowedConfirm weld NDE class on PO
A358 EFWLarge diameter EFW stainlessDifferent manufacturing route than ERW

Copy-paste RFQ

Stainless seamless pipe — ASTM A312 / ASME SA312 Grade: ____ NPS/OD: ____ Sch/wall: ____ Length: ____ Qty: ____ Ends: PE/BE MTC: 3.1/3.2 Destination: ____

Email to sales@savoypipinginc.com with destination and any IBR / NACE / TPI notes.

Stainless Steel Seamless Pipes range

Stainless Steel Seamless Pipes Specification ASTM A312 / ASME SA312 (pipe). Tube twins: A213 / A269 when ordered as tube
Stainless Steel Seamless Pipes Grades Common enquiry grades: 304 / 304L / 316 / 316L / 321 / 347 / 904L / 310S (others on request)
Stainless Steel Seamless Pipes Type Seamless (this page) — welded / ERW / EFW on twin pages when the PO allows
Stainless Steel Seamless Pipes Outer Diameter Size Seamless - 1/2" NB TO 18" NB
Welded / ERW- 1" NB TO 16" NB
EFW - 8" NB TO 110" NB
Stainless Steel Seamless Pipes Wall Thickness Schedule 10 to Schedule 160 (3 mm to 100 mm Thickness)
Stainless Steel Seamless Pipes Length 01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
Stainless Steel Seamless Pipes Ends Plain Ends / Beveled Ends
Stainless Steel Seamless Pipes Delivery Conditions As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
Stainless Steel Seamless Pipes Coating Electropolish, Mechanical Polish, Satin Finish, Passivated
Stainless Steel Seamless Pipes Other Testing Product Analysis, Transverse Tension Test, Flattening Test, Etching Test, Radiograph HIC Examination, Stabilizing Heat Treatment, Intergranular Corrosion Test, Weld Decay Test, Magnetic Particle Detection, Grain Size Test, NACE 0175, Dual Grade, PWHT (POST WELD HEAT TREATMENT), Flare Test, Bend Test, Hardness Test, Tensile Test etc
Stainless Steel Seamless Pipes Dimension All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME
Stainless Steel Seamless Pipes Value Added Services Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment
Stainless Steel Seamless Pipes Packaging Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector
Stainless Steel Seamless Pipes Shipment & Transportation By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
Stainless Steel Seamless Pipes Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC

Chemical Composition of Stainless Steel Seamless Pipes

Grade UNS No. EN No. C Cr Ni Mo Others
304 S30400 1.4301 0.08 18.00 - 20.00 8.00 - 12.00 - -
304L S30403 1.4307 0.035 18.00 - 20.00 8.00 - 12.00 - -
310S S31008 1.484 0.08 24.00 - 26.00 19.00 - 22.00 - -
316 S31620 1.4401 0.08 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 -
316L S31603 1.4404 0.035 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 -
316H S31603 - 0.04 - 0.10 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 -
316Ti S31635 1.471 0.08 16.00 - 18.00 10.00 - 14.00 2.00 - 3.00 Ti:5X(C+N) - 0.70
317L S31703 1.4438 0.035 18.00 - 20.00 11.00 - 15.00 3.00 - 4.00 -
321 S32100 1.441 0.08 17.00 - 19.00 9.00 - 12.00 - Ti:5X(C+N) - 0.70
347 S34700 1.450 0.08 16.00 - 18.00 10.00 - 14.00 - -
347H S34709 1.451 0.04 - 0.10 17.00 - 20.00 9.00 - 13.00 - -
904L N08904 1.4539 0.02 19.00 - 23.00 23.00 - 28.00 - N:0.10 max
Cu : 1.0 - 2.0

Stainless Steel Seamless Pipes Grade Names

EN-standard
Steel no. k.h.s DIN
EN-standard
Steel name
SAE grade UNS
1.4109 X65CrMo14 440A S44002
1.4112 X9CrMoV18 440B S44003
1.4125 X105CrMo17 440C S44004
440F S44020
1.4016 X6Cr17 430 S43000
1.4408 G-X 6 CrNiMo 18-10 316 S31600
1.412 X6CrTi12 409 S4090
410 S41000
1.4310 X10CrNi18-8 301 S30100
1.4318 X2CrNiN18-7 301LN
1.4307 X2CrNi18-9 304L S3043
1.4306 X2CrNi19-11 304L S30403
1.4311 X2CrNiN18-10 304LN S3043
1.4301 X5CrNi18-10 304 S30400
1.4948 X6CrNi18-11 304H S30409
1.4303 X5CrNi18-12 305 S30500
X5CrNi30-9 312
1.4841 X22CrNi2520 310 S31000
1.484 X 5 CrNi 2520 310S S31008
1.441 X6CrNiTi18-10 321 S32100
1.4878 X12CrNiTi18-9 321H S32109
1.4404 X2CrNiMo17-12-2 316L S31603
1.4401 X5CrNiMo17-12-2 316 S31600
1.4406 X2CrNiMoN17-12-2 316LN S31653
1.4432 X2CrNiMo17-12-3 316L S31603
1.4435 X2CrNiMo18-14-3 316L S31603
1.4436 X3CrNiMo17-13-3 316 S31600
1.471 X6CrNiMoTi17-12-2 316Ti S31635
1.4429 X2CrNiMoN17-13-3 316LN S31653
1.4438 X2CrNiMo18-15-4 317L S31703
1.4362 X2CrNi23-4 2304 S32304
1.4462 X2CrNiMoN22-5-3 2205 S31803/S32205
1.401 X2CrNiMoCuWN25-7-4 J405 S32760
1.4539 X1NiCrMoCu25-20-5 904L N08904
1.429 X1NiCrMoCuN25-20-7 N08926
1.447 X1CrNiMoCuN20-18-7 254SMO S31254

Stainless Steel Seamless Pipes Application

The Stainless Steel Seamless Pipes is used in the following Applications:-

  • Oil and gas equipments
  • Offshore technology
  • Seawater desalination plants
  • Chemical industry
  • Bridges
  • Storage tanks
  • Medical Industry
  • Civil Engineering
  • Pressure vessels, reactor tanks, and heat exchangers
  • Rotors, impellers and shafts
  • Power plants
  • Petrochemical
  • Shipbuilding industry

Stainless Steel Seamless Pipes Nominal Bore Sizes

  • 1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 3/4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 1" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 1-1/4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 1-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 2-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 3" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 3-1/2" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 4" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 5" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 6" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 8" NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 10" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 12" NB in ThicknessSchedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 14" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 16" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS
  • 18" NB in Thickness Schedule 10, Schedule 40, Schedule 80, Schedule 160, Schedule XXS

Frequently asked questions — Stainless Steel Seamless Pipe

What is Stainless Steel Seamless Pipe?

Stainless Steel Seamless Pipe is austenitic (or specified grade) stainless tubular product supplied to ASTM A312 / ASME SA312 seamless for corrosive and hygienic service.

Which grades are stocked most often?

304/304L and 316/316L dominate. 321/347 for stabilised service, 310S for heat, 904L/6Mo for severe chlorides — confirm availability on enquiry.

What documents do you provide?

Manufacturer MTC to EN 10204 3.1 (3.2 on request), with third-party inspection when the PO requires SGS/TUV/DNV/Lloyd’s etc.

Related product forms?

See seamless pipe, welded/ERW, seamless tube, A358 EFW and duplex hubs linked from the stainless category.

Export & documentation

We supply this product for domestic and export projects with mill test certificates (EN 10204 3.1 standard; 3.2 / TPI on request). Include destination, preferred Incoterms and any inspection body on the RFQ.