Stainless Steel Seamless Steel Pipe Industrial Solution

Stainless Steel Seamless Steel Pipe

Full grade coverage: 304/304L,316L,321,310S,2205,2507,904L austenitic & duplex stainless steel
Dimension range: OD 6‑630 mm, wall 1‑50 mm, complete NPS and Sch5S‑Sch80S schedule series
Solution annealed & pickled finish, sand‑blasting / polishing surface option available
Outstanding corrosion‑resistance, suitable for acid‑alkali, seawater, high‑temp and low‑temperature LNG service

Product Overview

Stainless Steel Seamless Steel Pipe is a high-performance seamless industrial pipe manufactured through hot rolling or cold drawing processes without welded joints. Designed for demanding industrial environments, it is produced according to GB/T 14976, ASTM A312, ASTM A269, ASTM A790 and EN 10216-5 standards for reliable corrosion resistance and pressure performance.

The product covers a wide range of stainless steel materials, including austenitic grades 304, 304L, 316, 316L, 317L, 321, 309S, 310S, duplex stainless steels 2205 and 2507, super-austenitic 904L and other special grades. Different materials are selected according to corrosion conditions, temperature requirements and service environments.

With outer diameter from 6 mm to 630 mm and wall thickness from 1 mm to 50 mm, Stainless Steel Seamless Steel Pipe supports complete NPS size ranges and stainless steel schedule series including Sch5S, Sch10S, Sch40S and Sch80S. Pipes are supplied in solution-annealed and pickled condition, with optional sand blasting and polishing surface treatment.

This seamless stainless steel pipe is widely applied in chemical processing, seawater desalination, petrochemical plants, pharmaceutical production, LNG systems, nuclear auxiliary equipment and anti-corrosion sewage treatment projects where corrosion resistance and long service reliability are required.

Stainless Steel Seamless Steel Pipe

Chemical & Mechanical Property Snapshot

Grade	C (Max)	Cr	Ni	Mo	Yield Strength (MPa, Min)	Tensile Strength (MPa, Min)	Elongation (% Min)	MOQ	Lead Time
304	0.08	18.0–20.0	8.0–10.5	—	205	515	35	1 Ton	15–25 Days
304L	0.03	18.0–20.0	8.0–12.0	—	170	485	40	1 Ton	15–25 Days
316	0.08	16.0–18.5	10.0–14.0	2.0–3.0	205	515	35	1 Ton	15–25 Days
316L	0.03	16.0–18.5	10.0–14.0	2.0–3.0	170	485	40	1 Ton	15–25 Days
317L	0.03	18.0–20.0	11.0–15.0	3.0–4.0	170	485	40	1 Ton	20–30 Days
321	0.08	17.0–19.0	9.0–12.0	—	205	515	35	1 Ton	20–30 Days
309S	0.08	22.0–24.0	12.0–15.0	—	205	515	35	1 Ton	20–30 Days
310S	0.08	24.0–26.0	19.0–22.0	—	205	515	35	1 Ton	20–30 Days
2205 Duplex	0.03	21.0–23.0	4.5–6.5	2.5–3.5	450	620	25	1 Ton	20–30 Days
2507 Duplex	0.03	24.0–26.0	6.0–8.0	3.0–4.0	550	795	15	1 Ton	25–35 Days
904L	0.02	19.0–23.0	23.0–28.0	4.0–5.0	220	490	35	1 Ton	25–35 Days
630	0.07	15.0–17.5	3.0–5.0	—	1100	1200	10	1 Ton	25–35 Days

Detailed Technical Specifications

Item	Details
Product Name	Stainless Steel Seamless Steel Pipe
Product Type	Seamless Industrial Stainless Steel Pipe
Manufacturing Process	Hot rolling and cold drawing
Applicable Standards	GB/T14976, ASTM A312, ASTM A269, ASTM A790, EN10216-5
Austenitic Grades	304, 304L, 316, 316L, 317L, 321, 309S, 310S
Duplex Grades	2205, 2507
Super Austenitic Grade	904L
Special Grade	630
EN Material Numbers	1.4301, 1.4307, 1.4306, 1.4305, 1.4311, 1.4310, 1.4319, 1.4401, 1.4404, 1.4432, 1.4438, 1.4541, 1.4828, 1.4845, 1.4372, 1.4373, 1.4016
Outer Diameter	6–630 mm
Wall Thickness	1–50 mm
NPS Range	NPS 1/8″–NPS 24″
Schedule Series	Sch5S, Sch10S, Sch40S, Sch80S
Standard Length	6 m / 12 m
Surface Condition	Solution annealed and acid pickled
Surface Options	Sand blasting and polishing available
Testing	Hydrostatic test, non-destructive inspection, dimensional verification
Quality Documents	Mill Test Certificate with heat number, chemical composition and mechanical test records
Packaging	Plastic end caps and seaworthy export packaging
MOQ	5 Ton
Payment Terms	T/T, L/C at Sight
Delivery Time	7–15 working days after receiving deposit
Package	Waterproof paper + galvanized steel strap + seaworthy export wooden pallet

Shape Section

Item	Shape Description	Notes
Primary Shape	Round / Circular Seamless Pipe	Most common form for stainless seamless pipe; stable OD & WT dimensional control; covers all grades (304, 304L, 316, 316L, 317L, 321, 309S, 310S, 2205, 2507, 904L)
Square Seamless Tube	Hollow square seamless profile	Cold-drawn seamless, no welding seam; suitable for structural and machinery applications
Rectangular Seamless Tube	Hollow rectangular seamless profile	Cold-drawn seamless, seamless construction; custom side dimensions available
Hexagonal Seamless Tube	Hexagonal hollow seamless bar / tube	Cold-drawn seamless; used for fittings and hydraulic parts
Octagonal Seamless Tube	Octagonal hollow seamless tube	Special custom cold-drawn seamless product; suitable for low-volume applications

Dimension Section

Item	Specification Details
Product Form	Stainless Steel Seamless Steel Pipe
Outer Diameter (OD) Range	6 mm–630 mm; Common stock OD: 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 32 mm, 38 mm, 42 mm, 48 mm, 57 mm, 60 mm, 76 mm, 89 mm, 102 mm, 114 mm, 168 mm, 219 mm, 273 mm, 325 mm
Wall Thickness (WT) Range	1.0 mm–40 mm; Common stock WT: 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 4.0 mm, 5.0 mm, 6.0 mm, 8.0 mm, 10 mm
Length	Fixed length: 3000 mm / 6000 mm / custom cut length; Random length: 4000–7000 mm
Tolerance	OD tolerance: ±0.1–±0.5 mm (depends on OD grade); Wall thickness tolerance: ±10%
End Type	Plain end / Beveled end
Surface Finish	Pickled / Bright annealed / Polished
Packaging	Wooden bundle / Wooden case

Product Comparison Table

AISI / ASTM Grade	EN Material Number	EN Chemical Grade	JIS SUS Grade	GB / China Grade	Steel Type
304	1.4301	X5CrNi18-10	SUS304	06Cr19Ni10	Austenitic
304L	1.4306 / 1.4307	X2CrNi19-11 / X2CrNi18-9	SUS304L	022Cr19Ni10	Austenitic Low-C
303	1.4305	X8CrNiS18-9	SUS303	Y06Cr19Ni10	Free-Machining Austenitic
304N	1.4311	X2CrNiN18-10	SUS304N1	022Cr19Ni10N	N-Strengthened Austenitic
301	1.4310 / 1.4319	X10CrNi18-8 / X5CrNi17-7	SUS301	1Cr17Ni7	Low-Ni Austenitic
316	1.4401	X5CrNiMo17-12-2	SUS316	06Cr17Ni12Mo2	Mo-Bearing Austenitic
316L	1.4404 / 1.4432	X2CrNiMo17-12-3	SUS316L	022Cr17Ni12Mo2	Low-C Mo Austenitic
317L	1.4438	X2CrNiMo18-15-4	SUS317L	022Cr17Ni13Mo3 / 022Cr19Ni13Mo4	High-Mo Austenitic
321	1.4541	X6CrNiTi18-10	SUS321	06Cr18Ni11Ti	Ti-Stabilized Austenitic
309S	1.4828	X15CrNiSi20-12	SUS309S	06Cr23Ni13	Heat-Resistant Austenitic
310S	1.4845	X12CrNi25-21	SUS310S	06Cr25Ni20	High-Temp Austenitic
201	1.4372	—	SUS201	1Cr17Mn6Ni5N	Mn-Saved Austenitic
202	1.4373	—	SUS202	1Cr18Mn8Ni5N	Mn-Saved Austenitic
430	1.4016	—	SUS430	06Cr17	Ferritic
409L	1.4512	—	SUS409L	022Cr11Ti	Ti-Stabilized Ferritic
410S	—	—	SUS410S	06Cr13	Low-C Martensitic
410	—	—	SUS410	12Cr13	Martensitic
420J1	—	—	SUS420J1	20Cr13	Martensitic
420J2	—	—	SUS420J2	30Cr13	Martensitic
2205	1.4462	—	SUS329J3L	022Cr22Ni5Mo3N	Duplex
2507	1.4410	—	SUS329J4L	022Cr25Ni7Mo4N	Super Duplex
904L	1.4539	—	SUS890L	022Cr25Ni7Mo4CuN	Super Austenitic
630 (17-4PH)	1.4542	—	SUS630	05Cr17Ni4Cu4Nb	Precipitation Hardening

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

Power Plant FGD Pipeline

Chemical Acid and Alkali Corrosive Media Transportation

Desalination Pipeline

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What standards does Stainless Steel Seamless Steel Pipe comply with?

It is manufactured according to GB/T14976, ASTM A312, ASTM A269, ASTM A790 and EN10216-5 standards.

What materials are available for Stainless Steel Seamless Steel Pipe?

Available materials include 304, 304L, 316, 316L, 321, 310S, 2205, 2507 and 904L stainless steel grades.

What size range is available?

The pipe supports OD 6–630 mm, wall thickness 1–50 mm and NPS 1/8"–NPS24" schedule series.

Is Stainless Steel Seamless Steel Pipe suitable for seawater applications?

Yes. 316L, 2205 and 2507 grades are suitable for seawater and chloride-rich environments.

Can surface treatment be customized?

Yes. Standard solution annealed and pickled finish is available, with optional sand blasting and polishing.

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Stainless Steel Seamless Steel Pipe Industrial Solution