Metinox Overseas is an internationally established Stainless Steel 304H EFW Pipe Manufacturer, which offers high-carbon alloy solutions to the high temperature services. The 304H EFW Pipe Stainless Steel is a special pipe that is designed to be used in those applications where high temperature and creep strength are important. The 304H grade was manufactured to the ASTM A358 standard and has a superior content of carbon (0.04-0.10) than the standard SS 304 EFW pipe, which has superior strength at high temperatures above 1000�F (537�C). The pipes are commonly used in petroleum refineries, boiler tubes and heat exchangers whose structural integrity is most important. The Electric Fusion Welding (EFW) process ensures that the large diameter pipes have a uniform wall thickness and weld integrity. Being a major supplier, Metinox Overseas offers Class 1 to Class 5 pipes with the 100 percent radiography test. The 2026 energy infrastructure modernization increases demand of our products in the USA and Europe. As the Middle East adds more capacity to petrochemicals, our 304H pipes have the mechanical performance and resistance to corrosion of the extreme thermal conditions.
Table of Contents
- Stainless Steel 304H EFW Pipe Manufacturer and Supplier
- Manufacturing process of SS 304H EFW Pipes
- Properties of SS 304H EFW Pipes
- Stainless Steel 304H EFW Pipe Specification
- Stainless Steel UNS S30409 EFW Pipes Equivalent Grades
- 304H Stainless Steel EFW Pipes Chemical Composition
- ASME SA312 SS TP304H EFW Pipes Mechanical Properties
- Applications & Uses of SS 304H EFW Pipe
- Why Choose Metinox Overseas?
- Export Destinations - USA, Europe, Middle East, LATAM
- SS 304H EFW Pipe Delivery Time & CIF Pricing by Country
- Other types of Stainless Steel 304H EFW Pipes
- Supplier and Exporter of Stainless Steel 304H EFW Pipes in Cities of India Like
- Supplier and Exporter of Stainless Steel 304H EFW Pipes in Countries Like
- Frequently Asked Questions (FAQ)
Manufacturing process of SS 304H EFW Pipes
It should start with production of ingots out of the raw material. The second process entails the preparation of welded pipe of specifications required using skelp. The pipe was unwound with the help of the unwinding machines and then a heating process took place. It passes through grooved rollers causing the edges to curve. The unwelded pipe is then welded by use of welding electrodes. This tightens the weld in which case the ends are tightened with pressure. It is further processed to make sure that it finally produces SS 304H EFW Pipes.
Properties of SS 304H EFW Pipes
The grade 304H contributes the properties to the EFW pipes. The pipes have high carbon content which increases their resistance against heat. It increases the yield strength, the short and long term creep strength of the pipes. It is against this reason that the EFW pipes are not only versatile but also cost effective. The general purpose use of EFW pipes is appropriate due to the corrosion resistance nature of its use. These properties on the pipes owe to the chemical composition. It is an all rounder pipe due to the mechanical resistance, heat bearing ability, weldability, oxidation resistance as well as corrosion resistance.
The SS 304H EFW Pipes are significant in their uses in automobile, industrial production, and construction among others. The most common area of applications is in home and commercial applications.
Stainless Steel 304H EFW Pipe Specification
| Parameter | Details |
| Specifications | ASTM A312/ ASME SA312 |
| EFW Pipes | 6" NB - 24" NB |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness Range | 0.3mm � 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | EFW |
| Form | Round Pipes, Square Pipes, Rectangular Pipes |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| EN 10216-5 | EN 10216 304H EFW Steel Pipe, EN 10216-5 1.4948 EFW Steel Pipes for pressure purposes |
| EN 10217-7 | EN 10217 304H Welded Steel Pipe, Steel EN 10217-7 1.4948 Welded Pipes for pressure purposes |
Stainless Steel UNS S30409 EFW Pipes Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. |
| SS 304H | S30409 | 1.4948 |
304H Stainless Steel EFW Pipes Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 � 20 | - | 8 � 10.5 | - |
ASME SA312 SS TP304H EFW Pipes Mechanical Properties
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| SS 304H | 515 | 205 | 40 | 92 | 201 |
Applications & Uses of SS 304H EFW Pipe
Stainless Steel 304H EFW (Electric Fusion Welded) Pipes are designed with the purpose of high stress environments in which high temperatures are a part of the regularity. These pipes have a high carbon content, which results in a much better creep strength and mechanical stability compared to normal 304 or 304L grades.
Power Generation
In common use in boilers, superheater tubes and high pressure steam lines where temperatures go above 500�C.
Petroleum Refineries
The petroleum refineries are needed in thermal crackers, catalytic reforming units, and piping systems in high temperatures, which deal with hydrocarbons.
Petrochemical Plants
These are used in heat exchanger and reactor vessel applications in which structural integrity is needed under thermal cycling.
Heat Exchanger Manufacturing
ASTM A358 TP304H is also a good choice of large-diameter shell and tube heat exchanger due to its high thermal conductivity and resistance to oxidation.
Chemical Industry
Utilized in equipment which is applied in transporting high temperature organic and inorganic chemicals.
Waste Treatment
This is used in incineration units and thermal oxidation systems in which heat resistance is needed along with a moderate level of corrosion resistance.
Metallurgical Processing
In components of the furnace and in high-heat gaskets which work at the carbide precipitation range.
Why Choose Metinox Overseas?
Metinox Overseas is a leading manufacturer of SS 304H EFW Pipes which is the most reliable in terms of critical energy and industrial infrastructure.
- Precision Carbon Control: We are able to keep a close carbon level of 0.04% to 0.10% and this makes sure that all the TP304H EFW pipes have the highest possible creep strength.
- ASTM A358 Quality Control: Our EFW pipes are produced under the ASTM A358 standards with the Class 1 to Class 5 options to suit different pressure and radiography.
- State-of-the-Art Testing Laboratories: All pipes will be 100% radiographed (in the case of Class 1), PMI, flattening, and hydrostatic tested to ensure integrity of the welds.
- Large Bore Specialists: We can be able to make large-diameter EFW pipes up to 100 in. NB with custom wall thickness (Schedule 160, XXS, etc.).
- Global Traceability: Certificates of Mill Test (MTC) are provided with all our products as per the standard requirements of EN 10204 3.1/3.2 giving international EPC contractors complete transparency of materials.
- Strategic Logistics: Since we have a good presence in USA, Europe, and Middle East, then our high-temperature piping solutions can always be delivered on time.
Looking for High-Quality SS 304H EFW Pipes?
Choose Metinox Overseas � Your Reliable SS 304H EFW Pipe Manufacturer & Exporter.
Let us support your high-temperature projects with quality, precision, and performance.
Export Destinations - USA, Europe, Middle East, LATAM
We are a major exporter of SS 304H EFW steel pipes to high-consumption regions focusing on energy and refinery infrastructure:
- Middle East: UAE (Dubai, Abu Dhabi), Saudi Arabia (Riyadh, Jubail), Qatar, Oman, Kuwait.
- Americas (LATAM & USA): USA (Houston, Texas), Brazil, Mexico, Argentina, Canada.
- Europe: Germany, Italy, UK, Netherlands, Belgium, France.
- Asia & Africa: Singapore, Malaysia, South Africa, Nigeria, Egypt, Thailand.
SS 304H EFW Pipe Delivery Time & CIF Pricing by Country
Metinox Overseas has developed an effective international logistic network that has assisted it to supply customers with ASTM A358 TP304H Pipes promptly to clients located anywhere in the globe. We have flexible INCOTERs that can be customized to suit your buying requirements including CIF (Cost, Insurance and Freight), FOB (Free on board), CFR (Cost and Freight and DDP (Delivered Duty paid). Our shipment lines and other freight forwarders have strategic alliances with us and it has provided us with competitive freight rates and a guaranteed transit time to every major port in the world.
| Destination Region | Major Ports / Cities | Estimated Delivery Time | Typical CIF Terms |
| Middle East (GCC) | Dubai (Jebel Ali), Dammam, Doha, Muscat, Kuwait | 7 - 10 Days | CIF Dubai / CIF Dammam / CIF Doha |
| Europe | Rotterdam, Hamburg, Antwerp, Southampton, Genoa | 20 - 25 Days | CIF Rotterdam / CIF Hamburg |
| USA & Canada | Houston, New York, Los Angeles, Long Beach, Vancouver | 25 - 30 Days | CIF Houston / CIF New York / CIF LA |
| Latin America (LATAM) | Santos (Brazil), Veracruz (Mexico), Buenos Aires, Callao | 30 - 35 Days | CIF Santos / CIF Veracruz |
| Southeast Asia | Singapore, Port Klang, Bangkok, Manila, Jakarta | 10 - 15 Days | CIF Singapore / CIF Port Klang |
| Africa | Lagos, Durban, Mombasa, Dar es Salaam, Alexandria | 15 - 20 Days | CIF Lagos / CIF Durban |
Note: The delivery times are estimated and may be affected by shipping lines, port-congestion, and customs clearance process. In cases of emergency, we provide air delivery services that take 5-7 days in order to deliver to the main international airports. The export team will provide tailored logistics services and up-to-date CIF prices on SS 304H EFW Pipes, SS 304H Welded Pipes and ASTM A358 TP304H Large Diameter Pipes.
Other types of Stainless Steel 304H EFW Pipes
Grade TP304H EFW Pipes, Thick Walled Stainless Steel 304H Electric Fusion Welded Pipe Stockists in India, Stainless Steel 304H Large Diameter Electric Fusion Welded Pipe, 304H SS schedule 40/40S EFW Pipe Supplier in India, schedule 80 Stainless Steel 304H EFW Pipes, SS 304H EFW Pipe Price List, ASTM A312 304H Stainless Steel EFW Pipe, Stainless Steel 304H EFW Pipe Gauges, 304H Stainless Steel schedule 160 EFW Pipes, SS 304H EFW Pipe exporter in India, EFW Stainless Steel 304H Pipes Manufacturer in Mumbai, SS 304H schedule 10 EFW Pipe, SS 304H Electric Fusion Welding Pipe Distributor, EFW Stainless Steel UNS S30409 Pipe
Supplier and Exporter of Stainless Steel 304H EFW Pipes in Cities of India Like
Nashik, Nagpur, Lagos, Busan, Chiyoda, Sharjah, Ernakulam, Pune, Moscow, Toronto, Kanpur, Jakarta, Sydney, Haryana, Ludhiana, Geoje-si, Madrid, Calgary, Colombo, Cairo, Abu Dhabi, Hyderabad, Seoul, Perth, London, Gurgaon, Granada, Milan, Coimbatore, Doha, Howrah, Ho Chi Minh City, Brisbane, Petaling Jaya, Secunderabad, Aberdeen, Singapore, Noida, Istanbul, Caracas, New York, Ranchi, Mexico City, Rajkot, Bangkok, Courbevoie, Jaipur, Ahmedabad, Riyadh, Jeddah, Atyrau, Edmonton, Pimpri-Chinchwad, Vadodara, Santiago, Faridabad, Vung Tau, Hanoi, Melbourne, Ahvaz, Bogota, Bhopal, Al Khobar, Dubai, Ankara, Dallas, Navi Mumbai, Ulsan, Gimhae-si, Tehran, Manama, Rio de Janeiro, Muscat, Visakhapatnam, Kolkata, Mumbai, Chennai, Chandigarh, Indore, Baroda, Al Jubail, Houston, Thane, Dammam, Thiruvananthapuram, Port-of-Spain, Montreal, Algiers, La Victoria, Surat, Kuala Lumpur, Jamshedpur, Hong Kong, Bengaluru, Los Angeles, New Delhi, Karachi, Lahore, Kuwait City.
Supplier and Exporter of Stainless Steel 304H EFW Pipes in Countries Like
Nigeria, Colombia, Croatia, Taiwan, Norway, Afghanistan, Saudi Arabia, Thailand, Russia, Puerto Rico, Tibet, Netherlands, United Arab Emirates, Singapore, Spain, Costa Rica, Italy, Serbia, Azerbaijan, Germany, Argentina, Japan, United States, Chile, Bolivia, Bahrain, Namibia, New Zealand, Mexico, Poland, United Kingdom, Indonesia, South Africa, Sri Lanka, Brazil, Philippines, Czech Republic, Peru, China, Belgium, Yemen, Greece, Vietnam, Venezuela, Lithuania, Algeria, Kazakhstan, Nigeria, Kenya, Slovakia, Oman, India, Ecuador, Nepal, Lebanon, Ireland, Ukraine, Hungary, Finland, Iran, Gabon, Angola, Romania, Poland, Kuwait, Sweden, Hong Kong, Turkey, Belarus, Jordan, Morocco, Zimbabwe, Bulgaria, South Korea, Trinidad & Tobago, Israel, Ghana, Bangladesh, Mongolia, Switzerland, Chile, Estonia, Macau, Austria, Canada, Egypt, Gambia, Denmark, Bhutan, France, Mexico, Pakistan, Australia, Portugal, Tunisia, Malaysia, Iraq, Iran, Libya, Qatar.
Frequently Asked Questions (FAQ)
The first one is the carbon content. The carbon content of SS 304H is more (0.04-0.10%), and offers superior mechanical and creep strength at temperatures beyond 1000�C than the standard 304 grade.
Electric Fusion Welding (EFW) process enables one to create large-diameter pipes (greater than 24") using high-quality plates. Uniform wall thickness and 100-percent radiography of the weld are attained, which is why it is ideal when 304H is needed in the high-pressure, high-temperature service.
Yes. We offer 100% radiography testing (depending on the Class requested, namely, Class 1 and Class 3 of ASTM A358) as the means to make sure that the weld has no defects and can withstand the most extreme industrial loads.
304H is a high temperature-optimized austenitic steel though; it is well tough at low temperatures. But, in the case of exclusive cryogenic operation, SS 304L is normally used to preclude a possibility of carbide development.
It will be a matter of pressure rating and inspection criteria of your project. Class 1 is the harshest (doubled welded: 100 percent radiography), and Class 2 is dual welded without radiography. Get the advice of our technical staff on the correct class to use in your application.
Enquire Now
Get pricing within 24 hours!
