SS Seamless Pipe – Sizes, Grades, Price List & Supplier Guide 2025 by Udhhyog
In industrial systems that demand precision, strength, and high corrosion resistance, the SS Seamless Pipe stands out as a premium piping solution. From chemical processing plants to pharmaceutical units and food-grade setups, stainless steel seamless pipes ensure hygienic, rust-free, and high-performance results.
At Udhhyog, we supply all grades and sizes of SS seamless pipe, including 304, 316, and 321 grades, conforming to ASTM A312, A213, and A269 standards. This article covers everything a buyer or engineer needs to know—pipe dimensions, wall thickness, pricing, specifications, applications, and supplier info.
What is SS Seamless Pipe?
SS Seamless Pipe is a type of stainless steel pipe manufactured without any welds or joints. Unlike welded pipes, seamless pipes are made from solid round billets and extruded through a die using high-temperature pressure, resulting in a uniform and leak-proof pipe.
Why Use Seamless Instead of Welded?
- No weld = No weak point
- Higher pressure & temperature resistance
- Better finish and roundness
- Preferred for critical applications in oil, gas, food, and chemical industries
Keyphrase in use: SS Seamless Pipe is ideal for critical applications due to its corrosion resistance and uniform structure.
Types of SS Seamless Pipes by Grade
| Grade | Application | Features |
|---|---|---|
| SS 304 | Food, dairy, plumbing | Most widely used, good corrosion resistance |
| SS 316 | Marine, chemical, pharma | High resistance to chloride & acid corrosion |
| SS 321 | Heat exchangers, boilers | Titanium stabilized, ideal for high-temp |
| SS 310 | Furnaces, heat pipes | High-temperature strength |
Udhhyog offers all SS seamless pipe grades with MTC (Material Test Certificate).
Manufacturing Process of Stainless Steel Seamless Pipe
SS Seamless Pipes are made using:
- Billet Cutting: Stainless steel billet cut to desired length
- Heating: Heated in rotary furnace
- Piercing: Pierced with mandrel to form hollow shell
- Elongation: Stretched and shaped in elongator
- Sizing & Finishing: Final dimensions, straightening, annealing
- Testing: Hydro & Eddy Current test, PMI, UT
Outbound Link:
How Seamless Pipes Are Made – Engineering360
SS Seamless Pipe Sizes & Wall Thickness Chart
| NB Size | OD (mm) | SCH 10 | SCH 40 | SCH 80 |
|---|---|---|---|---|
| ½” | 21.3 | 1.65 mm | 2.77 mm | 3.73 mm |
| 1″ | 33.4 | 2.11 mm | 3.38 mm | 4.55 mm |
| 2″ | 60.3 | 2.77 mm | 5.54 mm | 8.74 mm |
| 4″ | 114.3 | 3.05 mm | 6.02 mm | 8.56 mm |
| 6″ | 168.3 | 3.40 mm | 7.11 mm | 10.97 mm |
Download full SS Pipe Chart at Udhhyog RFQ
Price List (Per Meter) – 2025
Prices vary by grade, schedule, and size. Here’s an approximate price range:
| Grade | Size | SCH | Price (₹/meter) |
|---|---|---|---|
| SS 304 | ½” – 1″ | SCH 40 | ₹280 – ₹550 |
| SS 304 | 2″ – 4″ | SCH 40 | ₹700 – ₹1200 |
| SS 316 | ½” – 1″ | SCH 40 | ₹360 – ₹650 |
| SS 316 | 2″ – 4″ | SCH 40 | ₹850 – ₹1400 |
For best rates:
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Applications of SS Seamless Pipes in Industry
SS Seamless Pipe is used in industries that demand corrosion resistance, clean flow, and high temperature:
- Food & Beverage (milk, juice, brewery lines)
- Pharmaceuticals (sterile fluid piping)
- Chemical Plants (acid & chemical lines)
- Oil & Gas Refineries (steam, crude oil)
- Heat Exchangers & Boilers
- Marine Equipment (SS 316 grade)
- Structural & Architectural Use
Internal Link:
See Udhhyog’s Full Valve Range for SS Pipe Systems
IS & ASTM Standards for SS Seamless Pipes
| Standard | Description |
|---|---|
| ASTM A312 | SS Pipe for high-temperature & general service |
| ASTM A213 | SS Tubes for boilers, heat exchangers |
| ASTM A269 | SS Tubes for instrumentation & general use |
| IS 1239 | MS & GI Pipes (Not for SS, but good comparison) |
Outbound Link: ASTM Pipe Standards – ASTM.org
How to Choose the Right SS Seamless Pipe Grade
- SS 304 – Best all-rounder, for food & pharma
- SS 316 – Marine, acid resistance, costlier
- SS 321 – High temperature environments
- SS 310 – Extreme heat applications
Choose pipe based on:
- Temperature & Pressure
- Corrosive media
- Installation environment
- Budget
Fittings & Accessories
To complete your SS pipeline system, Udhhyog provides:
- SS Elbows (304/316)
- SS Tees & Reducers
- SS Flanges (Slip-on, Weld Neck, Blind)
- SS Valves – Ball, Gate, Butterfly, NRV
Internal Link: Udhhyog Stainless Steel Fittings Collection
SS Seamless Pipe Supplier in India – Udhhyog
Udhhyog is a leading SS Seamless Pipe distributor and stockist offering:
- SS 304, SS 316, SS 321 pipes
- Seamless pipes from ½” to 12”
- SCH 10 to SCH 160 availability
- MTC + Test Certificate with every order
- Export packaging, cutting, delivery across India
Call Now: 9311120784
Request RFQ: https://udhhyog.com/rfq
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FAQs About Stainless Steel Seamless Pipes
Q1. What is the difference between SS Seamless and SS Welded Pipe?
Seamless pipes have no weld seam; they are stronger and used in critical pressure zones.
Q2. Which grade is best – SS 304 or SS 316?
SS 316 is better for marine, saltwater, and acid resistance. SS 304 is cost-effective and versatile.
Q3. Are seamless pipes food-grade?
Yes, SS 304 and SS 316 seamless pipes are FDA-approved for food & pharma.
Q4. Can I use SS Seamless Pipe for high-pressure steam?
Yes, provided it is ASTM A312 SCH 80 or above.
Q5. Does Udhhyog supply custom-cut lengths?
Yes, we provide cutting, threading, and polishing as per project needs.