Stainless Steel Welded Steel Pipe Decorative & Sanitary Tube

Stainless Steel Welded Steel Pipe

Two series: decorative welded tube for construction & sanitary welded tube for hygienic process industry
Decorative sizes: round OD6‑325mm, square 10×10‑200×200mm, rectangular 20×10‑250×150mm, wall 0.4‑4.0mm; multiple surface finishes available
Sanitary tube: DIN metric OD 12.7‑50.8 mm, wall 0.8‑3.0 mm; internal weld leveling, EP electrolytic polishing / MP mechanical polishing
Multiple grades 201,304,304L,316L; meets decoration, food, beverage, dairy and pharmaceutical hygienic requirements

Product Overview

Stainless Steel Welded Steel Pipe is manufactured from stainless steel strip through high-frequency welding technology and is designed for architectural decoration, industrial applications and hygienic process systems. The product covers two major series: Decorative Tube and Sanitary Tube, providing different solutions for appearance requirements, structural applications and clean pipeline systems.

The Decorative Tube series is produced according to GB/T12770, ASTM A554 and EN10296 standards. It supports round, square and rectangular tube configurations with multiple surface finishes, making it suitable for architectural structures, furniture components, decoration projects and stainless steel frameworks.

The Sanitary Tube series is manufactured according to ASTM A270, 3A, ISO2037, DIN11850 and GB/T12771 standards. With internal weld leveling and optional EP electrolytic polishing or MP mechanical polishing, it provides smooth internal and external surfaces for hygienic industries.

Available stainless steel grades include 201, 304, 304L and 316L, supporting applications in construction, food and beverage processing, dairy production, pharmaceutical systems and other industries requiring corrosion resistance and clean surface performance.

Stainless Steel Welded Steel Pipe

Chemical & Mechanical Property Snapshot

Grade	C Max	Cr	Ni	Mo	Yield Strength (MPa) Min	Tensile Strength (MPa) Min	Elongation (%) Min	Hardness HV Max
201	0.15	16.0–18.0	3.5–5.5	—	275	520	40	230
304	0.08	18.0–20.0	8.0–11.0	—	205	515	40	200
304L	0.03	18.0–20.0	8.0–12.0	—	170	485	40	200
316	0.08	16.0–18.5	10.0–14.0	2.0–3.0	205	515	40	200
316L	0.03	16.0–18.5	10.0–14.0	2.0–3.0	170	485	40	200
317L	0.03	18.0–20.0	11.0–15.0	3.0–4.0	170	485	40	200
321	0.08	17.0–19.0	9.0–12.0	—	205	515	40	200
309S	0.08	22.0–24.0	12.0–15.0	—	205	515	40	210
310S	0.08	24.0–26.0	19.0–22.0	—	205	515	40	210
2205	0.03	21.0–23.0	4.5–6.5	2.5–3.5	450	620	25	290
2507	0.03	24.0–26.0	6.0–8.0	3.0–5.0	550	795	15	310
904L	0.02	19.0–23.0	23.0–28.0	4.0–5.0	220	490	35	200
430	0.12	16.0–18.0	≤0.75	—	205	450	22	180

Detailed Technical Specifications

Item	Technical Specification
Product Name	Stainless Steel Welded Steel Pipe
Product Type	High-Frequency Welded Stainless Steel Tube/Pipe
Product Series	Decorative Tube; Sanitary Tube
Manufacturing Process	Stainless steel strip + high-frequency welding
Main Stainless Steel Grades	201, 202, 301, 303, 304, 304L, 304N, 316, 316L, 317L, 321, 309S, 310S, 430, 409L, 410S, 410, 420, 420J2, 2205, 2507, 904L, 630
European EN Numerical Grades	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, etc.
EN Chemical Designations	X5CrNi18-10, X2CrNi18-9, X2CrNi19-11, X8CrNiS18-9, X2CrNiN18-10, X10CrNi18-8, X5CrNi17-7, X5CrNiMo17-12-2, X2CrNiMo17-12-3, X2CrNiMo18-15-4, X6CrNiTi18-10, X15CrNiSi20-12, X12CrNi25-21, etc.
AISI Grades	304, 304L, 303, 304N, 301, 316, 316L, 317L, 321, 309S, 310S, 201, 202, 430, 409L, 410S, 410, 420, 420J2, 2205, 2507, 904L, 630
JIS SUS Grades	SUS304, SUS304L, SUS303, SUS304N1, SUS301, SUS316, SUS316L, SUS317L, SUS321, SUS309S, SUS310S, SUS201, SUS202, SUS430, SUS409L, SUS410S, SUS410, SUS420J1, SUS420J2
GB Grades	06Cr19Ni10, 022Cr19Ni10, Y06Cr19Ni10, 022Cr19Ni10N, 1Cr17Ni7, 06Cr17Ni12Mo2, 022Cr17Ni12Mo2, 022Cr17Ni13Mo3, 022Cr19Ni13Mo4, 06Cr18Ni11Ti, 06Cr23Ni13, 06Cr25Ni20, 1Cr17Mn6Ni5N, 06Cr17, 022Cr11Ti, 022Cr12Ni, 06Cr13, 12Cr13, 20Cr13, 30Cr13, 022Cr22Ni5Mo3N, 022Cr25Ni7Mo4N, 022Cr25Ni7Mo4CuN
Decorative Tube Standard	GB/T 12770; ASTM A554; EN 10296
Decorative Round Tube	OD 6-325 mm
Decorative Square Tube	10×10-200×200 mm
Decorative Rectangular Tube	20×10-250×150 mm
Decorative Wall Thickness	0.4-6.0 mm
Decorative Surface Finishes	2B original finish; 8K mirror; HL hairline
Decorative PVD Finishes	Black titanium; rose gold; bronze
Decorative Applications	Building guardrails; stair handrails; door/window frames; advertising supports; furniture hardware; curtain-wall decoration; elevator decoration; landscape sculpture frameworks
Sanitary Tube Standards	ASTM A270; 3A; ISO 2037; DIN 11850; GB/T 12771
Sanitary Tube Process	Internal weld leveling
Sanitary Polishing	EP electrolytic polishing; MP mechanical polishing
Sanitary DIN Metric OD	12.7, 19, 25.4, 32, 38.1, 50.8 mm
Sanitary Wall Thickness	0.8-3.0 mm
Sanitary Applications	Beer and beverage production lines; dairy processing pipelines; pharmaceutical raw-material conveying; ultrapure water systems; medical equipment piping; food-grade storage tank connecting pipelines
Inspection	Visual inspection; dimensional inspection; weld seam testing
Quality Documentation	Mill Test Certificate for each batch
Packaging Protection	Protective plastic film
Export Packaging	Seaworthy export packaging
Main Industries	Architecture; furniture; food and beverage; dairy; pharmaceutical; hygienic process systems
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	Application Notes
Round Welded Tube	Circular hollow welded stainless steel tube	Standard stock for decorative & sanitary service
Square Welded Tube	Hollow square welded profile	Mainly used for architectural decoration and handrail frames
Rectangular Welded Tube	Hollow rectangular welded profile	Construction, furniture, curtain wall frameworks
Special Custom Shape	Oval / Elliptical welded tube	Custom order for special decoration, with longer lead time

Dimension Section

Tube Type	Shape	Outer Dimension	Wall Thickness
Decorative Stainless Steel Welded Tube	Round Tube	OD 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 19 mm, 22 mm, 25 mm, 28 mm, 32 mm, 38 mm, 42 mm, 48 mm, 51 mm, 63 mm, 76 mm, 89 mm, 102 mm, 114 mm, 127 mm, 141 mm, 168 mm, 219 mm, 273 mm, 325 mm	0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm
Decorative Stainless Steel Welded Tube	Square Tube	10×10 mm, 12×12 mm, 15×15 mm, 20×20 mm, 25×25 mm, 30×30 mm, 38×38 mm, 40×40 mm, 50×50 mm, 60×60 mm, 75×75 mm, 80×80 mm, 100×100 mm, 120×120 mm, 150×150 mm, 180×180 mm, 200×200 mm	0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm
Decorative Stainless Steel Welded Tube	Rectangular Tube	20×10 mm, 25×10 mm, 30×15 mm, 40×20 mm, 50×25 mm, 60×30 mm, 70×40 mm, 80×40 mm, 90×50 mm, 100×50 mm, 120×60 mm, 150×80 mm, 200×100 mm, 250×150 mm	0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm
Sanitary Stainless Steel Welded Tube	Round Tube	OD 12.7 mm, 19 mm, 25.4 mm, 32 mm, 38.1 mm, 50.8 mm	0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm

Product Comparison Table

AISI / ASTM Grade	EN Material No.	EN Chemical Designation	JIS SUS Grade	GB Grade	Steel Type	Core Feature	Typical Application
201	1.4372	—	SUS201	1Cr17Mn6Ni5N	Austenitic	Low nickel, cost-effective	Indoor decoration, handrails
202	1.4373	—	SUS202	1Cr18Mn8Ni5N	Austenitic	Low nickel, better ductility	Decorative frames, architectural trim
301	1.4310	X10CrNi18-8	SUS301	1Cr17Ni7	Austenitic	High work hardening	Construction decorative parts
303	1.4305	X8CrNiS18-9	SUS303	Y06Cr19Ni10	Free-Machining Austenitic	Excellent machinability	Machined decorative fittings
304	1.4301	X5CrNi18-10	SUS304	06Cr19Ni10	Austenitic	General corrosion resistance	Construction, sanitary pipe base
304L	1.4307	X2CrNi18-9	SUS304L	022Cr19Ni10	Low-C Austenitic	Resistant to intergranular corrosion	Welded sanitary tubes
304N	1.4311	X2CrNiN18-10	SUS304N1	022Cr19Ni10N	N-Strengthened Austenitic	Higher strength	Structural decorative pipe
316	1.4401	X5CrNiMo17-12-2	SUS316	06Cr17Ni12Mo2	Mo-Bearing Austenitic	Good chloride resistance	Sanitary and coastal decoration
316L	1.4404	X2CrNiMo17-12-3	SUS316L	022Cr17Ni12Mo2	Low-C Mo Austenitic	Weldable, anti-chloride	Food & pharmaceutical sanitary pipe
317L	1.4438	X2CrNiMo18-15-4	SUS317L	022Cr17Ni13Mo3	High-Mo Austenitic	Superior corrosion resistance	Severe chemical sanitary pipelines
321	1.4541	X6CrNiTi18-10	SUS321	06Cr18Ni11Ti	Ti-Stabilized Austenitic	High-temperature resistance	High-temperature process piping
309S	1.4828	X15CrNiSi20-12	SUS309S	06Cr23Ni13	Heat-Resistant Austenitic	Good high-temperature oxidation resistance	High-temperature flue piping
310S	1.4845	X12CrNi25-21	SUS310S	06Cr25Ni20	Heat-Resistant Austenitic	Extreme high-temperature resistance	Furnace & heat equipment pipe
430	1.4016	X6Cr17	SUS430	06Cr17	Ferritic	Low cost, decorative	Indoor decorative profiles
409L	1.4512	—	SUS409L	022Cr11Ti	Ferritic	High thermal fatigue resistance	Exhaust & low-corrosion structures
2205	1.4462	X2CrNiMoN22-5-3	SUS329J3L	022Cr22Ni5Mo3N	Duplex	High strength & anti-pitting	Offshore, high-chloride piping
2507	1.4410	X2CrNiMoN25-7-4	SUS329J4L	022Cr25Ni7Mo4N	Super Duplex	Extreme corrosion resistance	Heavy chemical industry
904L	1.4539	X1NiCrMoCu25-20-5	SUS890L	022Cr25Ni7Mo4CuN	Super Austenitic	Resistant to acid corrosion	Strong-acid process sanitary pipe
630	1.4542	X5CrNiCuNb17-4-4	SUS630	05Cr17Ni4Cu4Nb	Precipitation Hardening	Ultra-high strength	High-strength mechanical fittings

App Market

Reliable Steel Coil Solutions For Diverse Industrial Applications

API (Active Pharmaceutical Ingredient) Transfer

Dairy Processing Pipeline

Beer and Beverage Production Line

Product Packaging

Secure Export Packaging For Safe Handling And Delivery

FAQs

What is Stainless Steel Welded Steel Pipe used for?

Stainless Steel Welded Steel Pipe is used for architectural decoration, furniture structures, food processing pipelines, pharmaceutical systems and hygienic applications.

What grades are available for Stainless Steel Welded Steel Pipe?

Available grades include 201, 202, 430, 304, 304L, 316 and 316L stainless steel.

What is the difference between Decorative Tube and Sanitary Tube?

Decorative Tube focuses on appearance and structural applications, while Sanitary Tube focuses on hygienic systems requiring polished and clean internal surfaces.

Can the surface finish be customized?

Yes. Decorative tubes support 2B, 8K mirror, HL hairline and PVD color coating options.

Are sanitary welded tubes suitable for pharmaceutical applications?

Yes. Sanitary Tube follows ASTM A270, 3A, ISO2037, DIN11850 and GB/T12771 standards and is used in pharmaceutical and food-grade systems.

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Stainless Steel Welded Steel Pipe Decorative & Sanitary Tube