Stainless Steel Pipes

Stainless Steel Pipes – Types, Dimensions & Technical Guide

Stainless steel pipes and stainless steel tubes have become indispensable components in modern industries thanks to their superior strength, corrosion resistance and long service life. From oil and gas pipelines and process lines to hygienic stainless steel pipe systems in food and pharmaceutical plants, they provide reliable performance with minimal maintenance.

As an export-oriented stainless steel pipe supplier in Turkey, HL Metal delivers 304 stainless steel pipes, 316 / 316L stainless steel tubes and high precision stainless steel pipes according to international standards and project specifications. For mixed projects including carbon steel and custom tube work, you can also check:

Request a Stainless Steel Pipe Quote Dimensions & Weight Table

What Are Stainless Steel Pipes?

Stainless steel pipes are corrosion-resistant, high-strength hollow sections made from alloyed steels containing chromium and often nickel and molybdenum. Their passive chromium oxide layer provides excellent resistance against moisture, chemicals and high-temperature oxidation.

Compared to carbon steel pipes, stainless steel pipe systems offer:

Superior corrosion resistance in aggressive and chloride-rich environments
Excellent cleanability and hygiene for food, beverage and pharmaceutical processes
High mechanical strength and pressure resistance over a wide temperature range
Attractive surface finish for exposed architectural stainless steel pipe use

For a full product overview, you can also visit our dedicated stainless steel pipes page and combine it with industrial pipe solutions for mixed stainless and carbon steel projects.

Types of Stainless Steel Pipes

Understanding the main stainless steel pipe types is crucial when selecting the right product for your project. HL Metal can also integrate stainless lines with custom pipe fabrication and laser cutting of tubes and hollow sections .

1. Seamless Stainless Steel Pipes

Seamless stainless steel pipes are produced without any welded seams, resulting in a uniform structure and superior pressure-handling capability. They are ideal for:

High-pressure and high-temperature services
Chemical and petrochemical processing lines
Oil & gas pipelines and boiler tubes

2. Welded Stainless Steel Pipes

Welded stainless steel pipes are manufactured by rolling stainless steel strips or plates and welding the seam. They are cost-effective and widely used for:

Water transport and utility lines
Structural and architectural stainless steel pipe applications
Low- to medium-pressure process systems

3. ERW Stainless Steel Pipes

ERW (Electric Resistance Welded) stainless steel pipes are produced using high-frequency resistance welding. They offer good dimensional accuracy and are preferred for:

Handrails, balustrades and fencing
Scaffolding and light structural applications
Furniture and decorative stainless steel tube systems

4. EFW Stainless Steel Pipes

EFW (Electric Fusion Welded) stainless steel pipes are generally used for large diameters and high-temperature, high-pressure environments, especially in:

Power plants and high-energy piping
Oil, gas and offshore projects
Heat exchanger and process piping systems

Stainless Steel Pipe Grades & Specifications

Choosing the right stainless steel pipe grade is essential for performance and service life. HL Metal supplies a wide range of austenitic stainless steel pipes in 300-series grades:

Main Stainless Steel Pipe Grades

304 / 304L stainless steel pipes: Excellent general corrosion resistance; widely used in food processing, kitchen equipment and architectural applications.
316 / 316L stainless steel pipes: Enhanced pitting and crevice corrosion resistance in chloride environments; ideal for marine, pharmaceutical and chemical industries.
321 stainless steel pipes: Stabilized for high-temperature service; used in heat exchangers, exhaust systems and furnace parts.
347 stainless steel pipes: Niobium-stabilized grade, resistant to chromium carbide precipitation; suitable for chemical, aerospace and high-temperature applications.

International Specifications

Typical standards for stainless steel pipe and tube include:

ASTM A312 – Seamless and welded austenitic stainless steel pipes
ASTM A213 – Seamless ferritic and austenitic boiler, superheater and heat-exchanger tubes
ASTM A269 – Seamless and welded austenitic stainless steel tubing for general service
ASTM A358 – Electric-fusion-welded austenitic stainless steel pipe
EN 10216-5 / EN 10217-7 – European standards for stainless steel pressure pipes

All HL Metal stainless steel pipes are supplied with EN 10204 3.1 mill test certificates on request, ensuring full traceability for project and export documentation, similar to our industrial pipe product range .

Stainless Steel Pipe Manufacturing Process

Quality stainless steel pipe manufacturing requires precise process control and testing. Typical steps are:

Melting and casting: Stainless steel raw materials are melted in an electric arc furnace and cast into billets or slabs.
Forming: Billets are hot-rolled into hollow shells for seamless pipes, or hot/cold rolled into strips for welded pipes.
Extrusion or welding: Seamless pipes are extruded and elongated; welded pipes are formed and joined using TIG, laser, ERW or EFW processes.
Heat treatment: Pipes undergo solution annealing to restore corrosion resistance and optimize mechanical properties.
Pickling and passivation: Chemical treatments remove scale and contaminants, forming a stable passive layer for corrosion resistance.
Inspection and testing: Non-destructive testing (NDT), hydrostatic pressure tests and dimensional checks ensure compliance with ASTM and EN standards.

For tailor-made solutions, HL Metal can combine stainless steel materials with custom pipe fabrication and precise laser cutting of tubes and hollow sections .

Applications of Stainless Steel Pipes

Thanks to their versatility, stainless steel pipes and tubes are used in almost every major industry:

Oil and gas: Seamless stainless steel pipes handle high-pressure fluids and resist corrosive hydrocarbons in upstream and downstream systems.
Food and beverage: Hygienic, easy-to-clean stainless steel sanitary pipes ensure food safety and compliance with hygiene regulations.
Pharmaceuticals and biotech: Contamination-free piping meets stringent cleanliness and documentation requirements.
Construction and architecture: Aesthetic and durable stainless steel structural tubes enhance building façades, handrails, canopies and interior designs.
Water treatment and desalination: Corrosion-resistant pipes are essential for desalination plants, wastewater management and potable water systems. For complementary carbon steel lines, please see galvanized tubes and industrial pipes .
Automotive and aerospace: Lightweight yet strong stainless tubes are used in exhaust systems, hydraulic lines and fuel systems.

Where complex tube geometries are needed, HL Metal can support with laser-cut stainless steel tube processing as well as custom pipe production .

Key Advantages of Stainless Steel Pipes

Why are stainless steel pipes often preferred over other materials in critical applications?

Corrosion resistance: Withstands aggressive chemicals, seawater, industrial atmospheres and cleaning agents.
High strength: Maintains structural integrity under internal pressure, external load and vibration.
Temperature resistance: Performs reliably at cryogenic temperatures and in high-temperature service.
Low maintenance: Requires minimal upkeep over a long service life, reducing life-cycle costs.
Aesthetic appeal: Attractive, polished appearance for visible architectural installations.
Sustainability: 100% recyclable material supportive of green and circular economy projects.

Stainless Steel Pipe Dimensions & Weight Table (304 Grade)

The table below lists stainless steel pipe dimensions and theoretical weights for common 304 stainless steel pipes. Values are approximate and based on standard 6 m lengths.

Outside Diameter (mm)	Wall Thickness (mm)	Weight (kg/m)	Length (m)	Weight per Length (kg / 6 m)	Steel Grade
6	1	0,125	6 m	0,75	304
8	1	0,175	6 m	1,05	304
9	1	0,200	6 m	1,20	304
10	1	0,225	6 m	1,35	304
10	1,2	0,264	6 m	1,59	304
10	1,5	0,319	6 m	1,92	304
12,7	1	0,293	6 m	1,76	304
12,7	1,5	0,421	6 m	2,52	304
14	1	0,326	6 m	1,95	304
14	1,2	0,385	6 m	2,31	304
16	1	0,376	6 m	2,25	304
16	1,2	0,445	6 m	2,67	304
16	1,5	0,545	6 m	3,27	304
18	1	0,426	6 m	2,55	304
18	1,2	0,505	6 m	3,03	304
18	1,5	0,620	6 m	3,72	304
19	1,5	0,657	6 m	3,94	304
20	1	0,476	6 m	2,85	304
20	1,2	0,565	6 m	3,39	304
20	1,5	0,695	6 m	4,17	304
21,3	1,5	0,744	6 m	4,46	304
21,3	3	1,375	6 m	8,25	304
22	1,2	0,625	6 m	3,75	304
25,4	1	0,611	6 m	3,67	304
25,4	1,2	0,727	6 m	4,36	304
25,4	1,5	0,898	6 m	5,39	304
25,4	2	1,172	6 m	7,03	304
26,9	1,2	0,772	6 m	4,63	304
26,9	1,5	0,954	6 m	5,72	304
26,9	2	1,247	6 m	7,48	304
27,2	1,5	0,965	6 m	5,79	304
28	1,5	0,995	6 m	5,97	304
30	1	0,726	6 m	4,36	304
30	1,2	0,865	6 m	5,19	304
30	1,5	1,070	6 m	6,42	304
31,8	1,5	1,138	6 m	6,83	304
32	1,5	1,146	6 m	6,87	304
32	2	1,502	6 m	9,01	304
33,7	1,2	0,977	6 m	5,86	304
33,7	1,5	1,209	6 m	7,26	304
33,7	2	1,588	6 m	9,53	304
33,7	2,6	2,025	6 m	12,15	304
34	1	0,826	6 m	4,96	304
35	1,2	1,016	6 m	6,09	304
35	1,5	1,258	6 m	7,55	304
35	2	1,653	6 m	9,92	304
38	1,2	1,106	6 m	6,63	304
38	1,5	1,371	6 m	8,23	304
38	2	1,803	6 m	10,82	304
40	1,2	1,166	6 m	7,00	304
40	1,5	1,446	6 m	8,68	304
40	2	1,903	6 m	11,42	304
42,4	1,2	1,238	6 m	7,43	304
42,4	1,5	1,536	6 m	9,22	304
42,4	2	2,023	6 m	12,14	304
45	1	1,102	6 m	6,61	304
45	1,5	1,634	6 m	9,80	304
48,3	1,2	1,415	6 m	8,49	304
48,3	1,5	1,758	6 m	10,55	304
48,6	1,5	1,769	6 m	10,61	304
50,8	1,2	1,490	6 m	8,94	304
50,8	1,5	1,852	6 m	11,11	304
50,8	2	2,444	6 m	14,66	304
54	1,5	1,972	6 m	11,83	304
54	2	2,604	6 m	15,62	304
56	1,5	2,047	6 m	12,28	304
60,3	1,2	1,776	6 m	10,66	304
60,3	1,5	2,209	6 m	13,25	304
60,5	1,5	2,216	6 m	13,30	304
60,3	2	2,920	6 m	17,52	304
63,5	1,5	2,329	6 m	13,97	304
70	1,5	2,573	6 m	15,44	304
76,1	1,5	2,802	6 m	16,81	304
76,1	2	3,711	6 m	22,27	304
84	2	4,107	6 m	24,64	304
85	1,5	3,136	6 m	18,82	304
89	1,5	3,287	6 m	19,72	304
89	2	4,357	6 m	26,14	304
101	1,5	3,737	6 m	22,42	304
101	2	4,958	6 m	29,75	304
114	1,5	4,237	6 m	25,42	304
114	2	5,624	6 m	33,74	304
140	2	6,896	6 m	41,38	304
168	2	8,328	6 m	49,97	304
168	4	16,456	6 m	98,74	304
273	2	13,572	6 m	81,43	304
324	3	24,106	6 m	144,64	304

Theoretical weights are calculated for 304 grade stainless steel with standard density. Actual weight may vary slightly depending on tolerance, surface condition and manufacturing route.

How to Select the Right Stainless Steel Pipe Supplier

Selecting a reliable stainless steel pipe supplier is critical for successful project execution and long-term performance.

Verify certifications: Look for ISO quality systems and compliance with ASTM, EN and ASME standards.
Assess product range: A broad portfolio including stainless steel seamless pipes, stainless steel welded pipes and fittings ensures complete system supply. For carbon steel and galvanized tubes, see also Industrial Pipes and Galvanized Tubes .
Check manufacturing capabilities: In-house cutting, bending and surface finishing help optimize installation and reduce waste. HL Metal supports this with custom pipe production and laser cutting services .
Evaluate logistics and support: Fast delivery, export packaging and responsive technical support are essential for EPC and OEM customers.
Consider export experience: For international projects, choose a stainless steel pipe exporter with proven documentation and shipping know-how.

HL Metal acts as a stainless steel pipe supplier Turkey for Europe, MENA and global markets, combining mill-direct sourcing with flexible project-based service, integrated with our industrial pipe and custom pipe product families.

Stainless Steel Pipe Market Trends

The global stainless steel pipe market is growing, driven by industrialization, renewable energy, desalination and stricter environmental regulations. Duplex and super-duplex stainless steels are gaining popularity where higher strength and localized corrosion resistance are required.

At the same time, sustainability targets are pushing producers and suppliers to adopt energy-efficient manufacturing and recycling practices, making stainless steel piping systems an attractive, future-proof choice, especially when combined with optimized laser-cut tube processing .

Request a Stainless Steel Pipe Quotation

Whether you need 304 / 316 stainless steel process pipes, decorative stainless steel tubes or custom sized stainless pipe for your project, HL Metal can support you with export-ready, certified material. We can also combine stainless lines with industrial pipes , galvanized tubes and custom pipe solutions in a single export package.

All stainless steel pipes can be supplied with EN 10204 3.1 certificates, custom length cutting, and packaging suitable for sea, road or container transport. For value-added processing of stainless tubes and hollow sections, please also see our laser cutting tube and hollow section service .

Information to Include in Your Enquiry

Please share the following details so we can prepare an accurate offer:

Required stainless steel pipe outside diameters, wall thicknesses and lengths
Total meter length or estimated tonnage
Grade and standard (e.g. 304 / 304L, 316 / 316L, 321 – ASTM A312 / EN 10216-5)
Surface finish (mill finish, polished, pickled & passivated, brushed, etc.)
End preparation (plain ends, beveled ends, threaded ends)
Delivery location and preferred Incoterms (EXW, FCA, FOB, CFR, CIF, DAP)

After receiving your enquiry, our team will respond with the most competitive stainless steel pipe price offer, along with lead time, available stock and technical documentation.

Contact HL Metal for a Stainless Pipe Quote

We proudly supply a wide range of stainless steel pipes designed for durability, corrosion resistance, and superior performance. With decades of industry expertise, we offer seamless stainless steel pipes, welded stainless pipes, and custom stainless piping solutions to meet the demanding needs of industrial, construction, and export projects worldwide.

What Are Stainless Steel Pipes?

Stainless steel pipes are hollow cylindrical products made from high-grade stainless materials, known for their strength, corrosion resistance, and aesthetic appeal. Whether you require seamless stainless steel pipes for high-pressure applications or welded stainless pipes for structural and general-purpose use, HL Metal provides precision-manufactured products tailored to your project.

Product Types and Solutions

Seamless Stainless Steel Pipes – Superior strength and leak-free performance for chemical processing, pipelines, and pressure systems.
Welded Stainless Pipes – Cost-effective solutions for architectural, water treatment, and industrial applications.
Corrosion-Resistant Pipes – Reliable performance in marine, chemical, and food industries.
Precision Stainless Steel Tubes – Exact tolerances for automotive, medical, and instrumentation uses.

Applications

Industrial projects – energy, petrochemical, chemical transport.
Construction – building structures, bridges, public works.
Water treatment and food processing – hygiene and durability.
Export markets – global supply of export-quality stainless pipes.

Why Choose HL Metal?

Top-quality products meeting ASTM, EN, DIN standards.
Wide range of sizes, grades, and finishes.
High-strength stainless steel products for critical demands.
Expertise in global exports with full documentation.
Technical consultation and project optimization support.

Specifications

Grades: 304, 316, 321, duplex; Standards: ASTM A312, ASTM A213, EN 10216; Lengths: 6m, 12m, custom; Surface finishes: polished, brushed, pickled.

Sustainability and Innovation

We focus on sustainable production, energy efficiency, and innovative solutions to meet evolving market demands.

Contact Us

If you are looking for reliable stainless steel pipes and precision stainless steel tubes, contact HL Metal Demir Çelik Sanayi today to strengthen your next project with premium solutions.