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Get Hot Finished Stainless Steel Seamless Pipe Factory Direct at Unbeatable Prices
The quality hot finished stainless steel seamless pipe offered by JILAIDA, a professional manufacturer in China. We use a hot extrusion process (pushing heated billets through a mold in one go to form the billet), with a yield of over 95% and a loss of less than 5%. The product has no weld seams, no intergranular corrosion or stress cracking weak points, continuous grain flow, uniform wall thickness, and smooth inner and outer surfaces (extruded Ra≤1.6μm, bright annealing can reach Ra≤0.8μm).
What is a Hot Finished Stainless Steel Seamless Pipe?
A Hot Finished Stainless Steel Seamless Pipe begins as a heated solid billet — typically round bar in 304, 316L, 310S, 2205, or other corrosion-resistant grades. The billet is brought above its recrystallization temperature, then forced by a hydraulic press through a circular die and over a mandrel in one continuous stroke. The metal flows plastically into the annular gap, forming a tube with no weld, no seam, and no filler. The wall structure is uniform from bore to outer surface, and the grain orientation follows the extrusion direction — both factors that directly improve pressure-bearing capacity and corrosion performance. That is the core distinction of a Hot Finished Stainless Steel Seamless Pipe: there is no weld seam to serve as a starting point for intergranular corrosion, stress cracking, or fatigue failure.
JILAIDA operates hot-extrusion lines for stainless steel and specialty alloy tubes. The process delivers a finished-product yield above 95% with material loss below 5%. Every pipe that exits the press has a smooth bore and a clean outer surface, minimizing downstream machining and shortening delivery time.
Stainless Steel Grades in Regular Production
Ji Lai Da's extrusion press handles a broad range of austenitic, duplex, and high-alloy stainless steels. The following table lists the principal grades, each targeting different service conditions.
| Grade | UNS / Standard | Family | Key Property |
|---|---|---|---|
| 304 | S30400 | Austenitic | General-purpose corrosion resistance |
| 316 / 316L | S31600 / S31603 | Austenitic (Mo-bearing) | Chloride pitting and crevice corrosion resistance |
| 310 / 310S | S31000 / S31008 | Austenitic (high Cr/Ni) | Oxidation resistance to 1150 °C |
| 2205 | S32205 | Duplex (austenitic + ferritic) | Yield ≈ 2× austenitic; stress corrosion cracking resistance |
| X5CrNi18-10 | 1.4301 (EN) | Austenitic (EN equivalent of 304) | European standard structural austenitic tube |
| 08Х18Н10 | — (GOST) | Austenitic (≈ 304) | CIS-market equivalent of AISI 304 |
| 06Cr17Ni12Mo2 | — (GB) | Austenitic Mo-bearing (≈ 316) | Chinese standard molybdenum austenitic tube |
| 08Х17Н14М2 | — (GOST) | Austenitic Mo-bearing (≈ 316L) | CIS-market low-carbon molybdenum grade; NACE MR0175 capable |
| Х20Н25 | — (GOST) | High-Ni austenitic (≈ Alloy 825) | ~20Cr/25Ni; moderate acid service at lower cost than nickel alloys |
| 03Х20Н25 | — (GOST) | Low-carbon variant of Х20Н25 | C ≤ 0.03%; prevents sensitization in welded or heat-exposed zones |
Standard Dimensions — Finished Pipe and Semi-finished Tube
Two product forms are available from the same extrusion line: finished pipe ready for installation, and semi-finished (rough-extruded) tube intended for further cold drawing or pilgering by the buyer.
| Parameter | Finished Pipe | Semi-finished (Rough) Tube |
|---|---|---|
| Outside Diameter | 6 – 89 mm | ≤ 89 mm |
| Wall Thickness | 3 – 9 mm | ≥ 9 mm |
| Length | 3 000 – 10 000 mm | 3 000 – 3 500 mm |
| OD Tolerance | ± 0.5 mm | ± 1.0 mm |
| WT Tolerance | ± 10% | ± 15% |
| Surface Finish | Pickled / Polished / Bright-annealed | As-extruded (mill scale) |
| End Preparation | Plain / Beveled / Flanged | Plain cut |
Typical Service Environments
A seamless wall eliminates the weakest point in any pressure-retaining system — the weld seam and its heat-affected zone. Specifiers select Hot Finished Stainless Steel Seamless Pipe when the process fluid, temperature, or code requirement makes a welded joint unacceptable:
Chemical and Petrochemical
Acid leaching, chlorination, and catalytic lines where intergranular corrosion at weld seams is a known failure mode. 316L and 2205 are common choices; high-nickel austenitic grades (Х20Н25, 03Х20Н25) bridge the cost gap to full nickel alloys.
Oil and Gas
Sour-gas and produced-water piping requiring NACE MR0175 compliance. 316L and 08Х17Н14М2 serve moderate-sour service; 2205 handles higher chloride levels.
Power Generation and Nuclear
Boiler and superheater tubing, nuclear-island auxiliary piping. 304 and 316L for balance-of-plant; 310S for high-temperature sections. Full code traceability per ASTM/ASME standards.
Desalination
Brine concentrate and SWRO reject piping. 2205 duplex and 316L compete on life-cycle cost against titanium.
Pharmaceutical and Food
Hygienic-grade lines with bright-annealed internal surfaces, typically in 304 or 316L with Ra ≤ 0.8 µm.
Data Center Liquid Cooling
Extruded square and rectangular stainless tubes for coolant distribution manifolds. Ji Lai Da supplies unequal-wall profiles (3.3 mm × 3 sides + 13 mm base) in 304 and 316 for direct-to-chip liquid cooling racks.
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310S Stainless Steel Seamless Pipe
JILAIDA is a China manufacturer and exporter of 310S Stainless Steel Seamless Pipe for high-temperature industrial applications. Made from 310S stainless steel with a maximum carbon content of 0.08%, the pipe combines high-temperature oxidation resistance with improved resistance to intergranular corrosion after welding and thermal exposure. Jiangsu Ji Lai Da supplies standard and customized pipe sizes for heat treatment equipment, boilers, petrochemical systems, and other demanding applications.
304 Stainless Steel Seamless Pipe
The 304 Stainless Steel Seamless Pipe offered by JILAIDA, a professional manufcaturer from China, for general industrial and commercial applications. 304 stainless steel combines general corrosion resistance, good fabrication properties, and broad application flexibility, making it suitable for food and beverage processing, pharmaceutical equipment, water treatment, chemical processing, HVAC systems, and architectural applications.
X5CrNi18-10 Extruded Seamless Pipe
JILAIDA, a stainless steel seamless pipe manufctaurer from China, produces X5CrNi18-10 Extruded Seamless Pipe by an extrusion-based seamless process. Standard dimensions cover outside diameters from 6mm to 89mm, wall thicknesses from 3mm to 9mm, and lengths from 3000mm to 10000mm. Pickled or polished surface conditions are available, while dimensional and finishing requirements can be confirmed according to the project specification.
08Х18Н10 Hot Extruded Pipe
JILAIDA is a China manufacturer of 08Х18Н10 Hot Extruded Pipe, combining austenitic stainless steel corrosion resistance with seamless hot-extruded construction. The pipe is available in 6–89 mm outside diameters and 3–9 mm wall thicknesses, with pickled or polished surfaces, making it suitable for industrial piping and further precision tube processing.
06Cr17Ni12Mo2 Stainless Steel Extruded Seamless Pipe
As a specialized Chinese manufacturer of nickel-based alloy seamless pipes, Jilaida produces 06Cr17Ni12Mo2 stainless steel extruded seamless pipes using a hot extrusion process that forms the pipe in a single step. These pipes feature a seamless structure with no longitudinal welds, a uniform and dense grain structure, and a wall thickness tolerance controlled within ±0.3 mm. The addition of molybdenum (2–3%) significantly enhances the material's resistance to pitting and crevice corrosion in chloride-rich environments, making it suitable for corrosive applications such as seawater desalination, coastal refining and chemical processing, pharmaceutical water systems, and offshore platforms.
08Х17Н14М2 Extruded Round Pipe
Purchase high-quality 08Х17Н14М2 Extruded Round Pipe from Jilaida, a professional manufacturer in China. This pipe is formed in a single pass using a hot extrusion process; the wall thickness tolerance is controlled within ±0.3 mm, the grain structure is uniform across both inner and outer walls, and there are no longitudinal weld defects. Please contact us for a quote.
Process Advantages Specific to Hot Extrusion
Wall Uniformity
The mandrel-to-die gap controls wall thickness directly. Eccentricity stays within tight limits — no mandrel deflection or roll misalignment to cause local thinning.
Recrystallized Microstructure
Hot extrusion refines grain in a single pass with no intermediate anneal. The result is fine, uniform grains that improve both corrosion test pass rates and mechanical property consistency.
Clean Bore
No weld bead, no internal scarfing marks. Surface roughness Ra ≤ 1.6 µm as-extruded; bright-annealed finishes reach Ra ≤ 0.8 µm for hygienic applications.
Material Efficiency
Yield ≥ 95%, loss < 5%. When the feedstock is 2205 duplex or 310S, every kilogram saved counts. Hot extrusion wastes far less than machining from solid bar.
Shape Flexibility
Beyond round pipe, the same press can produce square, rectangular, and custom-profile tubes — including unequal-wall sections for liquid-cooling applications — by changing the die and mandrel geometry.
Quality Assurance and Certifications
Every shipment of Hot Finished Stainless Steel Seamless Pipe from Ji Lai Da carries a Material Test Certificate (MTC) per EN 10204 3.1, with full chemical analysis and mechanical test results traceable to the original billet heat. The company holds ISO 9001 certification plus four additional accreditations covering pressure equipment and material compliance. Third-party inspection by SGS, TÜV, or Lloyd's can be arranged.
Export packing uses wooden crating with steel strapping; each bundle is tagged with heat number, grade, size, and quantity. Ji Lai Da ships FOB, CIF, or DDP from ports including Shanghai, Ningbo, and Lianyungang.
Frequently Asked Questions
Can you produce non-standard OD / wall thickness combinations?
Yes. Our tooling library covers many non-standard die-and-mandrel sets. New tooling can be fabricated within 15–20 working days. Minimum trial-run quantity applies.
What is the minimum order quantity?
Standard grades (304, 316L, 310S): 500 kg. High-alloy stainless (2205, Х20Н25): 300 kg. Sample lengths of 300–500 mm can be arranged for material qualification.
Do you supply both MTC and mill certifications?
Every shipment includes EN 10204 3.1 MTC. EN 10204 3.2 with third-party witness is available on request. Certificate of Origin, material traceability documents, and packing lists are provided for customs clearance.
What surface finishes are available?
As-extruded (mill scale), pickled (acid-washed), polished (mechanical or electrolytic), and bright-annealed. Hygienic-grade pipes are supplied bright-annealed with Ra ≤ 0.8 µm internally.
How do I request a quotation?
Send grade, OD, wall thickness, length, quantity, surface finish, and delivery terms (FOB / CIF / DDP) via email or RFQ form. Ji Lai Da responds within 24 hours with unit price, lead time, and shipping estimate.
JILAIDA — China manufacturer and factory-direct supplier of Hot Finished Stainless Steel Seamless Pipe. FOB, CIF, and DDP delivery; full EN 10204 certification; competitive factory pricing on 304, 316L, 310S, 2205, and all grades listed above.
