Stainless Steel Pipes
Stainless Steel 304 EFW Pipes
Stainless Steel 304 EFW Pipes Supplier, Stainless Steel 304 EFW Pipes Class 1 / 2 / 3 / 4 / 5 Welded Pipes, Reliable Pipes & Tubes.
Reliable Pipes & Tubes – Leading Stainless Steel 304 EFW Pipes Supplier
Reliable Pipes & Tubes is a leading supplier, stockholder, and exporter of high-grade Stainless Steel 304 EFW Pipes. Electric Fusion Welded (EFW) pipes are produced through a process in which high voltage electricity is passed onto the material to heat and melt it. Our Stainless Steel 304 EFW Pipes are designed for high-temperature and general corrosive service operations, complying with strict international standards.
The Stainless Steel 304 EFW Pipes are corrosion resistant to certain chemicals and agents. Since the electric fusion welding does not involve other welding materials, Stainless Steel 304 EFW Pipes can usually be produced from 6 inches up to 100 inches in diameter. These pipes are welded by rolling the plates and welding the seam and then cleaning the weld flash with scarfing blades.
We offer a comprehensive size range of Stainless Steel 304 EFW Pipes from 1/8" to 36" NB in various classes (Class 1, 2, 3, 4, 5) and schedules to meet custom industrial applications. Every Stainless Steel 304 EFW Pipes supplied by Reliable Pipes & Tubes undergoes transverse guided-bend weld testing, transverse tension testing, hydrostatic testing, and radiography (where required by class specifications) to ensure optimal joint efficiency and structural integrity.
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What is Stainless Steel 304 EFW Pipes?
Stainless Steel 304 EFW Pipes are a type of stainless steel pipes that is produced through electric fusion welding. The electric fusion welding is a process in which high voltage electricity is passed onto the material to heat and melt it. Since the material is fully melted, pressurization is not required after the process. Stainless Steel 304 EFW Pipes have 18% chromium, 8% nickel and manganese, silicon, sulfur and phosphorus in the composition. These pipes are typically used for high-temperature and corrosive environments, making them suitable for chemical processing, marine applications, and food processing.
Key Specifications and Characteristics
Stainless Steel 304 EFW Pipes refer to a specific grade of austenitic Stainless Steel, known for its excellent corrosion resistance and its good mechanical properties. The Stainless Steel 304 EFW Pipes consider many specification points such as material composition and manufacturing process. Some essential points are explained below:
Material Composition: 304 stainless steel is an austenitic grade containing high levels of chromium (18-20%) and nickel (8-10.5%). The Stainless Steel 304 EFW Pipes have low levels of carbon to prevent carbide precipitation during welding, preserving corrosion resistance. The manufacturing process of Stainless Steel 304 EFW Pipes is electric-fusion-welded, which is a type of welding method that uses an electric current to fuse the pipe's edges, creating a strong joint, and a solution-annealed condition, ensuring optimal mechanical properties and corrosion resistance.
Why use X-rays welding for Stainless Steel 304 EFW Pipes? X-ray welding is relatively new in the electric fusion welding technology. The X-rays focus on smaller spot with accuracy and can melt the metal faster. This allows the impacted zone to be as minimal as possible so the mechanical properties of the material remain intact. With X-rays, the deformation is little to none, so the pipe does not need additional treatments in terms of wall thickness, absolute roughness or the shape.
ERW vs Stainless Steel 304 EFW Pipes
| Parameter |
Details |
| ERW Full Form | Electric Resistance Welding (ERW) |
| EFW Full Form | Electric Fusion Welding (EFW) |
| Specification of ERW & EFW | ASME 36.10, ASME 36.19, ASME B16.25, ASME B16.49 |
| ERW & EFW Advantage | Custom size, Greater strength, Greater pressure resistant |
Applications and Industry Usage
Stainless Steel 304 EFW Pipes are widely used in construction and other structural applications. Many industries use stainless steel for their production and Stainless Steel 304 EFW Pipes are used in major production houses such as Chemical Processing, Marine Applications, and Food Processing. Essential points are explained below:
- Chemical Processing: Resistance to acids and chlorides makes 304 ideal for the chemical industry.
- Marine Applications: The pipe's ability to resist seawater corrosion is a key factor for use in marine environments.
- Food Processing: 304 pipes are used in food processing industries where high levels of hygiene and corrosion resistance are required.
Benefits of Using Stainless Steel 304 EFW Pipes
When we use Stainless Steel 304 EFW Pipes, we get many advantages such as its suitability everywhere in industrial applications, especially in Chemical Processing, Marine Applications, and Food Processing. Stainless Steel 304 EFW Pipes are popular for their longer lifespan, low maintenance, and versatile material properties.
For Our Customers:
- We will work with you to make sure you get what you need, when you need it.
- We will provide you with the best customer service possible.
- We will keep our equipment updated and maintained.
- We will use the highest quality materials.
- We will deliver quality, cost-effective Stainless Steel 304 EFW Pipes that meet your specifications.
Stainless Steel 304 EFW Pipes Quick Details
| Parameter |
Details |
| Company Name | Reliable Pipes & Tubes |
| Country/Region | India |
| FOB Price | US $1500 - $5000 / Metric Ton |
| Port | Nhava Sheva Port, Mumbai |
| Main Products | Seamless Pipes & Tubes, Welded Pipes & Tubes, EFW Pipes, Stainless Steel Tube, API 5L Pipes |
| Certification | ISO 9001, ISO 14001 & OHSAS 18001 |
Stainless Steel 304 EFW Pipes Specifications
| Specification Heading |
Details |
| Standard | ASTM A312 / ASTM A358 / ASME SA358 |
| ASME / ANSI Standard | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Specification Class | Class 1, Class 2, Class 3, Class 4, Class 5 |
| Grades | 304, 304L, 304H |
| Type | EFW, Electric Fusion Welded |
| Available Forms and Types | Hydraulic, Square, Round, Hex, Rectangle, Honed |
| Outer Diameter Size | 1/8" - 36" NB, 6.35 - 914.4 mm OD |
| Wall Thickness | 0.8 - 12.7 mm / Schedule 5 to Schedule 160 |
| Length | Up to 26 Meters, Single Random, Double Random, and Custom Sizes |
| Ends | Plain Ends / Beveled Ends / Treaded Ends |
| Delivery Conditions | Cold Drawn, Annealed and Pickled, Bright Annealed, Polished |
| Surface Finish and Coating | 2B, No.4, No.1, No.8 Mirror Finish or custom Finish as per customer Requirements |
| Schedule (SCH) | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Dimension | All pipes are inspected/tested to the relevant standards including ASTM and ASME |
| Value Added Services | Grooving, Export Packaging, Material Testing, Polishing, Threading, Machining, Ultrasonic Testing, Customer Tagging/Marking, Beveling, Cutting, Color Coding |
| Packaging | Loose / Bundle / Wooden Pallet / Wooden Box / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Material Test Certificate | EN10204 3.1, 3.2 / Laboratory Test Certificate from NABL Approved Lab. / Under Third Party Inspection Agency like SGS, TUV, DNV, LLOYDS, ABS etc. |
| Equivalent Standards | JIS, UNI, GB, SS, NFA, DIN, ASTM, SAE, GOST, KS, AWWA, EN, IS, BS, ANSI, API, ISO, AISI, CSA |
Stainless Steel 304 EFW Pipes Size Range
| Parameter |
Details |
| Size | 1/8" - 36" NB, 1/4" - 36" OD |
| OD | 6.35 - 914.4 mm |
| Thickness | 0.8 - 12.7 mm |
| Length | Up to 26 Meters |
Sizes for Stainless Steel 304 EFW Pipes
| Type |
OD Range |
Wall Thickness |
Length |
Specification / Welding |
Condition & Finish |
| Longitudinal Seam (One Joint) |
8" NB to 24" NB (219.1 to 609.6 mm) |
2.5 to 32 mm |
6 meters max (Double random possible with one circumferential joint) |
ASTM A358, A409, A778; TIG, Plasma, SAW welding |
Solution Annealed or As welded. Finish: Pickled. |
| Circumferential Welding Joints |
18" to 48" (457.2 to 1220 mm) |
2.5 to 14.0 mm |
3.5 to 6 meters |
ASTM A358, A409, A778; TIG, Plasma, GTAW welding |
Solution Annealed or As welded. Finish: Pickled. |
Chemical Composition of Stainless Steel 304 EFW Pipes
| Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
N |
| 304 Min |
- |
- |
- |
- |
- |
18.0 |
8.0 |
- |
| 304 Max |
0.08 |
2.0 |
0.75 |
0.045 |
0.03 |
20.0 |
10.5 |
0.10 |
| 304L Min |
- |
- |
- |
- |
- |
18.0 |
8.0 |
- |
| 304L Max |
0.03 |
2.0 |
0.75 |
0.045 |
0.03 |
20.0 |
12.0 |
0.10 |
| 304H Min |
0.04 |
- |
- |
- |
- |
18.0 |
8.0 |
- |
| 304H Max |
0.10 |
2.0 |
0.75 |
0.045 |
0.03 |
20.0 |
10.5 |
- |
* Note: 304H also has a requirement for a grain size of ASTM no. 7 or coarser.
Mechanical Properties of Stainless Steel 304 EFW Pipes
| Grade |
Tensile Str (MPa) min |
Yield Str 0.2% Proof (MPa) min |
Elong (% in 50mm) min |
Hardness Rockwell B (HR B) max |
Brinell (HB) max |
| 304 |
515 |
205 |
40 |
92 |
201 |
| 304L |
485 |
170 |
40 |
92 |
201 |
| 304H |
515 |
205 |
40 |
92 |
201 |
Physical Properties of Stainless Steel 304 EFW Pipes
| Grade |
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (μm/m/°C) 0-100°C / 0-315°C / 0-538°C |
Thermal Conductivity (W/m.K) At 100°C / At 500°C |
Specific Heat 0-100°C (J/kg.K) |
Elec Resistivity (nΩ.m) |
| 304 / 304L / 304H |
8000 |
193 |
17.2 / 17.8 / 18.4 |
16.2 / 21.5 |
500 |
720 |
Grade Specification Comparison of Stainless Steel 304 EFW Pipes
| Grade |
UNS No |
Old British BS / En |
Euronorm No / Name |
Swedish SS |
Japanese JIS |
| 304 |
S30400 |
304S31 / 58E |
1.4301 / X5CrNi18-10 |
2332 |
SUS 304 |
| 304L |
S30403 |
304S11 / - |
1.4306 / X2CrNi19-11 |
2352 |
SUS 304L |
| 304H |
S30409 |
304S51 / - |
1.4948 / - |
- |
- |
* Note: These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.
Stainless Steel 304 EFW Pipes Yield Strength
| Grade |
Tensile Strength, N/mm2 (min) |
Yield Strength, N/mm2 (min) |
Elongation, % (min) |
| 304 |
515 |
205 |
35 |
Stainless Steel 304 EFW Pipes Nominal Wall Thickness
| NPS Designator |
Outside Diameter (in.) |
Schedule 5S (in.) |
Schedule 10S (in.) |
Schedule 40S (in.) |
Schedule 80S (in.) |
| 1/4 | 0.540 | - | 0.065 | 0.088 | 0.119 |
| 3/8 | 0.675 | - | 0.065 | 0.091 | 0.126 |
| 1/2 | 0.840 | 0.065 | 0.083 | 0.109 | 0.147 |
| 3/4 | 1.050 | 0.065 | 0.083 | 0.113 | 0.154 |
| 1.0 | 1.315 | 0.065 | 0.109 | 0.133 | 0.179 |
| 1 1/4 | 1.660 | 0.065 | 0.109 | 0.140 | 0.191 |
| 1 1/2 | 1.900 | 0.065 | 0.109 | 0.145 | 0.200 |
| 2 | 2.375 | 0.065 | 0.109 | 0.154 | 0.218 |
| 2 1/2 | 2.875 | 0.083 | 0.120 | 0.203 | 0.276 |
| 3 | 3.500 | 0.083 | 0.120 | 0.216 | 0.300 |
| 3 1/2 | 4.000 | 0.083 | 0.120 | 0.226 | 0.318 |
| 4 | 4.500 | 0.083 | 0.120 | 0.237 | 0.337 |
| 5 | 5.563 | 0.109 | 0.134 | 0.258 | 0.375 |
| 6 | 6.625 | 0.109 | 0.134 | 0.280 | 0.432 |
| 8 | 8.625 | 0.109 | 0.148 | 0.322 | 0.500 |
| 10 | 10.750 | 0.134 | 0.165 | 0.365 | 0.500 |
| 12 | 12.750 | 0.156 | 0.180 | 0.375 | 0.500 |
Stainless Steel 304 EFW Pipes Tolerances
| NPS Designator |
Permissible Variations in Outside Diameter Over (in.) |
Permissible Variations in Outside Diameter Under (in.) |
| 1/8 to 1-1/2, incl | 1/64 (0.015) | 1/32 (0.031) |
| Over 1-1/2 to 4, incl | 1/32 (0.031) | 1/32 (0.031) |
| Over 4 to 8, incl | 1/16 (0.062) | 1/32 (0.031) |
| Over 8 to 18, incl | 3/32 (0.093) | 1/32 (0.031) |
SS Stainless Steel 304 EFW Pipes Dimensions
| DIA (A) |
O/D (B) |
SCH.5S Wt (Kg/M) |
SCH.5S Wall (mm) |
SCH 10S Wt (Kg/M) |
SCH 10S Wall (mm) |
SCH.20S Wt (Kg/M) |
SCH.20S Wall (mm) |
SCH.40S Wt (Kg/M) |
SCH.40S Wall (mm) |
| 6 (1/8") | 10.3 | 0.23 | 1.0 | 0.27 | 1.2 | 0.33 | 1.5 | 0.37 | 1.73 |
| 8 (1/4") | 13.7 | 0.37 | 1.2 | 0.49 | 1.65 | 0.58 | 2.0 | 0.64 | 2.24 |
| 10 (3/8") | 17.2 | 0.47 | 1.2 | 0.63 | 1.65 | 0.74 | 2.0 | 0.87 | 2.31 |
| 15 (1/2") | 21.3 | 0.81 | 1.65 | 1.02 | 2.11 | 1.15 | 2.5 | 1.29 | 2.77 |
| 20 (3/4") | 26.7 | 1.03 | 1.65 | 1.30 | 2.11 | 1.49 | 2.5 | 1.71 | 2.87 |
| 25 (1") | 33.4 | 1.31 | 1.65 | 2.13 | 2.77 | 2.24 | 3.0 | 2.54 | 3.38 |
| 32 (1 1/4") | 42.2 | 1.67 | 1.65 | 2.73 | 2.77 | 2.90 | 3.0 | 3.44 | 3.56 |
| 40 (1 1/2") | 48.3 | 1.93 | 1.65 | 3.16 | 2.77 | 3.35 | 3.0 | 4.11 | 3.68 |
| 50 (2") | 60.3 | 2.42 | 1.65 | 3.99 | 2.77 | 4.90 | 3.5 | 5.52 | 3.91 |
| 65 (2 1/2") | 73.0 | 3.75 | 2.11 | 5.34 | 3.05 | 6.00 | 3.5 | 8.77 | 5.16 |
| 80 (3") | 88.9 | 4.59 | 2.11 | 6.56 | 3.05 | 8.37 | 4.0 | 11.47 | 5.49 |
| 100 (4") | 114.3 | 5.93 | 2.11 | 8.50 | 3.05 | 12.18 | 4.5 | 16.32 | 6.02 |
| 150 (6") | 168.3 | 11.47 | 2.77 | 14.04 | 3.40 | 22.08 | 5.5 | 28.69 | 7.11 |
| 200 (8") | 219.1 | 15.00 | 2.77 | 20.77 | 3.76 | 33.82 | 6.35 | 43.20 | 8.18 |
Stainless Steel 304 EFW Pipes Sizes
| NPS Designator |
Outside Diameter (in.) |
Outside Diameter (mm) |
Schedule 5SA Wall (in.) |
Schedule 5SA Wall (mm) |
Schedule 10SA Wall (in.) |
Schedule 10SA Wall (mm) |
Schedule 40SA Wall (in.) |
Schedule 40SA Wall (mm) |
Schedule 80SA Wall (in.) |
Schedule 80SA Wall (mm) |
| 8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
| 10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500 | 12.70 |
| 12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375 | 9.52 | 0.500 | 12.70 |
| 14 | 14.000 | 355.60 | 0.156 | 3.96 | 0.188 | 4.78 | - | - | - | - |
| 16 | 16.000 | 406.40 | 0.165 | 4.19 | 0.188 | 4.78 | - | - | - | - |
| 18 | 18.000 | 457.20 | 0.165 | 4.19 | 0.188 | 4.78 | - | - | - | - |
| 20 | 20.000 | 508.00 | 0.188 | 4.78 | 0.188 | 4.78 | - | - | - | - |
| 22 | 22.000 | 558.80 | 0.188 | 4.78 | 0.218 | 5.54 | - | - | - | - |
| 24 | 24.000 | 609.60 | 0.218 | 5.54 | 0.250 | 6.35 | - | - | - | - |
| 30 | 30.000 | 762.00 | 0.250 | 6.35 | 0.312 | 7.92 | - | - | - | - |
Stainless Steel 304 EFW Pipes Stock List
- Stainless Steel 304 EFW Pipes Schedule 5
- Stainless Steel 304 EFW Pipes Schedule 10s
- Stainless Steel 304 EFW Pipes Schedule 40
- Stainless Steel 304 EFW Pipes Schedule 80
- Stainless Steel 304 EFW Pipes Round Pipe
- Stainless Steel 304 EFW Pipes Square Pipe
- Stainless Steel 304 EFW Pipes Rectangular Pipe
- Fabricated Stainless Steel 304 EFW Pipes
Stainless Steel 304 EFW Pipes Price List
| Product Description |
Price (FOB) |
| Stainless Steel 304 EFW Pipes – Standard | US $5.00 - 30.00 / Kilogram |
| Stainless Steel 304 EFW Pipes – Class 1 | US $30 - 160 / Kilogram |
| Stainless Steel 304 EFW Pipes – Class 2 | US $2000 - 3200 / Ton |
| Stainless Steel 304 EFW Pipes – Class 3 | US $2200 - 5800 / Ton |
| Stainless Steel 304 EFW Pipes – Large Diameter | US $2500 - 5000 / Metric Ton |
| Stainless Steel 304 EFW Pipes – Class 4 | US $3 - 7 / Kilogram |
| Stainless Steel 304 EFW Pipes – Class 5 | US $600 - 800 / Ton |
Packaging and Sea Transportation Protection
At Reliable Pipes & Tubes, packaging is processed with standard anti-rust measures and sea transportation security rules. We ensure that your pipes reach safely and in perfect condition via the following packaging modes:
- Bundle packing with steel strips
- Crate packing (wooden cases)
- Naked packing
- End protection with plastic caps or wooden protectors at both ends