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SS Schedule 40 Pipe – Specifications & Technical Details
Nominal Bore: 1/8” NB to 24” NB
Outer Diameter: As per ASME B36.19 / B36.10
Wall Thickness: As defined under Schedule 40
Length: 6 Meter, 12 Meter, Random & Custom Length
Form: Seamless & Welded
Stainless Steel 304 / 304L
Stainless Steel 316 / 316L
Stainless Steel 321
Stainless Steel 310 / 310S
Other grades available on request
Seamless SS Schedule 40 Pipe
ERW SS Schedule 40 Pipe
EFW SS Schedule 40 Pipe
Suitable for low to medium pressure applications
Excellent performance under normal industrial temperatures
Pressure rating depends on size, grade & operating temperature
Mill Finish
Pickled & Annealed
Polished Finish
Electro Polished
Oil & Gas Pipelines
Chemical & Petrochemical Plants
Water Supply & Plumbing Systems
Food, Dairy & Pharmaceutical Industry
Compressed Air & Process Pipelines
Structural & Fabrication Projects
ASTM A312 / ASTM A213
ASME SA312
ASME B36.19 / B36.10
EN / DIN / IS Standards
Mill Test Certificate (MTC) Available
Medium wall thickness with high strength
Excellent corrosion resistance
Cost-effective and durable solution
Easy fabrication and welding
Long service life
Bulk & Project Quantity Supply
Pan India Delivery
Export Packing Available
Custom Size & Grade Orders Accepted
SS Schedule 40 Pipe Supplier
PS Steel Supplier is a trusted manufacturer and supplier of SS Schedule 40 Pipes, offering seamless and welded stainless steel pipes designed for medium pressure industrial, commercial and infrastructure applications.
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SS 304 & SS 316 Schedule 40 Pipe
We supply SS 304 and SS 316 Schedule 40 Pipes that provide excellent corrosion resistance, strength and long service life for oil & gas, chemical, food and pharmaceutical industries.
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Applications of SS Schedule 40 Pipe
SS Schedule 40 Pipes are widely used in water supply, plumbing systems, oil & gas pipelines, chemical plants, dairy units and food processing industries.
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Pan India Supply of SS Schedule 40 Pipe
Based in Delhi, PS Steel Supplier provides SS Schedule 40 Pipes across India with reliable logistics, bulk supply capability and timely delivery for industrial and project requirements.
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SS Schedule 40 Pipe: Thickness, Size, Specifications, Uses & Complete Guide
You are reading the PS Steel Supplier Blog.
In today’s blog, we will be talking about SS Schedule 40 Pipe —
a stainless steel pipe that is widely used in many sectors such as construction, industry, oil & gas, and chemical plants.
If you are a:
Contractor
Engineer
Fabricator
Factory Owner
Trader or Dealer
then this blog is very important for you.
Because in this blog we will learn about:
What is SS Schedule 40 Pipe
Its thickness, size, and specifications
Which industries use it
The difference between Schedule 40 and Schedule 80
And most importantly —
How to choose the right SS Schedule 40 Pipe for your project
What is SS Schedule 40 Pipe?
First, let’s understand —
What is SS Schedule 40 Pipe?
SS Schedule 40 Pipe is a standard stainless steel pipe,
where “Schedule 40” defines the wall thickness of the pipe.
What does Schedule mean?
Schedule simply means:
How thick the pipe wall is.
The larger the Schedule number,
the thicker the pipe wall will be.
SS Schedule 40 Pipe is a medium wall thickness pipe,
which provides a perfect balance of both strength and cost.
This is why it is used in:
Residential projects
Commercial buildings
Heavy industrial applications
everywhere.
Why is Schedule 40 a Global Standard?
Now the question is —
Why is Schedule 40 so popular?
Because SS Schedule 40 Pipe:
Is manufactured to international standards
Follows the same dimensions in every country
Is available in globally accepted sizes & thicknesses
What is its biggest advantage?
Replacements are easily available
Fittings match perfectly
There are no dimension issues in export/import
That’s why Schedule 40 stainless steel pipe is preferred in large industrial and infrastructure projects.
SS Schedule 40 Pipe – Technical Specifications
Now let’s get to the most important part —
SS Schedule 40 Pipe Specifications
Outer Diameter (OD)
The outer diameter of the pipe
Fixed according to the size
Inner Diameter (ID)
The inner diameter of the pipe
ID decreases as the wall thickness increases
Wall Thickness
This is defined by the Schedule
SS Schedule 40 Pipe has medium thickness
Example:
1 Inch SS Schedule 40 Pipe
OD ≈ 33.40 mm
Wall Thickness ≈ 3.38 mm
Pressure Handling Capacity
Suitable for low to medium pressure systems
Widely used in industrial fluid and gas lines
Temperature Resistance
Due to the stainless steel material
Stable performance even in high-temperature environments
Which Grades are Used in SS Schedule 40 Pipe?
A frequently asked question —
Which is the best grade of SS Schedule 40 Pipe?
The most common grades are:
SS 304 Schedule 40 Pipe
General industrial use
Food, dairy, and pharma industries
Good corrosion resistance
SS 316 Schedule 40 Pipe
Chemical and marine environments
High corrosion resistance
Slightly higher cost, top performance
SS 310 / SS 321 (Special Applications)
High-temperature zones
Power plants and furnaces
At PS Steel Supplier,
SS 304 and SS 316 Schedule 40 Pipes
are regularly available in stock.
Schedule 40 Pipe Size Chart, Dimensions & Industry Usage
Schedule 40 pipes are widely used in industrial, commercial and infrastructure projects due to their balanced wall thickness and pressure handling capacity. Below is a detailed Schedule 40 pipe size chart along with the most demanded sizes and their common industry applications. For weight reference, you can also check the SS Pipe Weight & Size Schedule Chart .
Schedule 40 Pipe – Standard Size & Dimension Chart
| Nominal Pipe Size (NPS) | Outer Diameter (mm) | Wall Thickness (mm) | Approx. Weight (kg/m) |
|---|---|---|---|
| 1/2" | 21.34 | 2.77 | 1.27 |
| 3/4" | 26.67 | 2.87 | 1.69 |
| 1" | 33.40 | 3.38 | 2.50 |
| 1 1/2" | 48.30 | 3.68 | 4.05 |
| 2" | 60.33 | 3.91 | 5.44 |
| 3" | 88.90 | 5.49 | 11.29 |
| 4" | 114.30 | 6.02 | 16.07 |
| 6" | 168.28 | 7.11 | 28.26 |
Dimensions are as per ASME standards. For complete reference, you may download the Stainless Steel Pipe Schedule Chart PDF .
Most Demanded Schedule 40 Pipe Sizes
| Pipe Size | Demand Level | Common Use |
|---|---|---|
| 1" & 1.5" | Highest Demand | Plumbing, food processing, dairy lines |
| 2" | Very High | Chemical plants, water supply pipelines |
| 3" | High | Oil & gas, compressed air systems |
| 4" | Medium-High | Industrial fluid transfer, utilities |
| 6" | Project Based | Infrastructure & process pipelines |
Schedule 40 Pipe – Industry Wise Size Usage
| Industry Type | Common Sizes Used | Material Preference |
|---|---|---|
| Oil & Gas | 2", 3", 4" | SS 316 Schedule 40 |
| Chemical & Petrochemical | 1.5", 2", 3" | SS 316 / SS 304 |
| Food & Dairy | 1", 1.5", 2" | SS 304 Schedule 40 |
| Water & Plumbing | 1", 2", 3" | SS / Mild Steel Schedule 40 |
| Structural & Fabrication | 3", 4", 6" | Mild Steel Schedule 40 |
For application-specific guidance, you can also read our detailed guide on SS Schedule 40 Pipe Applications, Sizes and Benefits or explore our product range at Schedule 40 Steel Pipe .
If you are comparing materials, you may also refer to our Schedule 40 Mild Steel Pipe page for better selection clarity.
Applications of SS Schedule 40 Pipe
Now let’s talk about real-life uses:
Construction Industry
Water supply lines
Plumbing systems
Fire fighting pipelines
Industrial Sector
Oil & Gas pipelines
Chemical fluid transfer
Compressed air lines
Agriculture & Utilities
Irrigation systems
Borewell connections
Fabrication & Structural Work
Support structures
Framework
Machine pipelines
Where strength and durability are required,
SS Schedule 40 Pipe is considered the best option.
Schedule 40 vs Schedule 80 – Difference
This is a very common confusion:
| Feature | Schedule 40 | Schedule 80 |
|---|---|---|
| Wall Thickness | Medium | Thick |
| Cost | Economical | Expensive |
| Pressure Handling | Medium | High |
| Usage | General industrial | Heavy duty |
For normal industrial applications,
SS Schedule 40 Pipe is perfectly sufficient.
In extremely high-pressure conditions,
Schedule 80 Pipe is preferred.
How to choose the right SS Schedule 40 Pipe?
Ask yourself these 5 questions when selecting a pipe:
What fluid or gas will be flowing?
What is the operating pressure?
What will the temperature be?
Is it for indoor or outdoor use?
What is your budget?
Based on these answers:
Select the correct grade
Decide on the proper size
Choose a trusted supplier
Incorrect pipe selection can lead to
leakage, failure, and heavy losses in the future.
PS Steel Supplier – A Trusted Name in SS Pipes
If you are looking for:
An SS Schedule 40 Pipe manufacturer/supplier
Genuine material at the best price
On-time delivery and proper documentation
Then PS Steel Supplier is a trusted name for you.
For bulk orders, quotations, or technical guidance,
contact PS Steel Supplier today.
Contact PS Steel Metal Supplier
Get in touch with PS Steel Metal Supplier for high-quality stainless steel pipes, industrial fittings, flanges, valves and bulk supply requirements across India.
Company Name
PS Steel Metal Supplier
Office Address
SHOP NO. 58, 1ST FLOOR,
RAGHU SHREE MARKET,
AJMERI GATE, DELHI – 110006
Sales & Supply Support
PS Steel Professional Team