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Х20Н25 Hot Extruded Seamless Round Pipe
Buy quality Х20Н25 Hot Extruded Seamless Round Pipe from Ji lai da, a professional manufacturer in China. Manufactured by hot extrusion above 1,100°C, Х20Н25 seamless pipes feature a uniform austenitic structure, low residual stress, excellent chloride stress corrosion cracking resistance, and reliable performance between 316 stainless steel and premium nickel alloys. Available in customized dimensions with EN 10204 3.1 MTC, full heat traceability, and factory-direct pricing, our Х20Н25 pipes are widely used in desalination, petrochemical, offshore, and acid processing industries.
03Х20Н25 Extruded Seamless Pipe
The difference between 08Х20Н25 and 03Х20Н25 is three hundredths of a percent carbon. That's it — 0.08% vs 0.03%. But those three hundredths determine what happens at the weld. When a standard-carbon austenitic alloy is heated above 450 °C and held in the 450–850 °C range — exactly what happens next to a weld bead — chromium carbides precipitate at grain boundaries. The chromium-depleted zone beside each carbide becomes a narrow corridor where corrosion resistance drops to a fraction of the base metal. In chloride service, those corridors become initiation sites for intergranular attack. The 03Х20Н25 extruded seamless pipe from JILAIDA factory eliminates this risk at the source: with carbon capped at 0.03%, there isn't enough free carbon to form harmful carbides, regardless of thermal history. You weld it, and the heat-affected zone stays as corrosion-resistant as the parent metal.
Semi-finished 304 Stainless Steel Tube
A semi-finished 304 stainless steel tube is a hot-extruded seamless hollow — the intermediate stage between a solid round billet and a finished-dimension pipe. Jilaida, a professional manufacturer in China forms it on a 2,000-ton forward extrusion press: the billet is induction-heated, pierced, and forced through a die in one stroke, producing a round, weld-free tube with consistent wall thickness across its full length. Standard stock runs OD 89 mm × WT 9 mm × length 3,000–3,500 mm; all three dimensions can be retooled against a buyer's drawing. Each piece is pickled to strip oxide scale and inspected before shipment, accompanied by an EN 10204 3.1 mill certificate covering chemistry and mechanical properties.
Semi-finished 316 Stainless Steel Tube
Jilaida factory's durable Semi-finished 316 stainless steel tube is a hot-extruded seamless blank stock designed for buyers who will draw, size, and straighten the tube into finished products — precision instrumentation tubing, thin-wall heat exchanger tube, hydraulic control lines, medical capillary tube, and marine umbilicals that demand chloride pitting resistance beyond what 304-derived products can deliver. The 2% molybdenum in 316 raises the PREN from 18 to 24–26, which is the difference between a tube that pits in chloride service within months and one that runs for years — a 20–30% raw-material premium that buys a 2–4× reduction in unplanned field replacement.
310 Rough Extruded Pipe
25% chromium and 20% nickel in the chemistry. 1150 °C oxidation resistance in service. And a surface that still carries the extrusion skin — dark, textured, unmachined. The 310 rough extruded pipe from Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. is the raw form: a seamless hollow straight off the press, pickled to remove loose oxide but otherwise left as-formed. No grinding, no polishing, no bright finish. For buyers who will machine, bore, or re-process the tube themselves, the rough condition saves a step they'd pay for and then cut away.
Heat Resistant Stainless Steel Tube
A heat resistant stainless steel tube is specified wherever a process runs hot enough to destroy ordinary austenitic grades — ethylene cracking furnaces at 1050 °C, hydrogen reformer outlets under thermal shock, supercritical boiler superheaters, waste-to-energy flue-gas ducts, concentrated solar receiver loops carrying molten salt, glass-melting regenerator stacks, and aerospace hot-gas-path ducting.
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.
