en 10216-5 1.4404 tube

EN 10216-5 1.4404 Tube – Premium European Marine Grade Solution for Corrosive Industrial Environments

HEBEI ALL TRUST STEEL CO., LTD delivers industrial-grade en 10216-5 1.4404 tube engineered to eliminate corrosion risks in the harshest chemical and marine applications. Our seamless tubes are made from an extra-low carbon (≤0.03%) molybdenum-alloyed material guaranteeing no sensitisation during welding and superior resistance to chloride pitting, with an annual capacity of more than 15,000 tons and 100% hydraulic testing. All our tubes are fully eddy current tested and certified to EN 10204 3.1, giving you full material traceability for your critical pressure systems and PED compliance.

What Is EN 10216-5 1.4404 Tube?

The product is a high quality austenitic stainless steel pressure pipe made in accordance with European technical delivery requirements. The grade 1.4404 is equivalent to the grade X2CrNiMo17-12-2, which is known all over the world as 316L.

This seamless construction solves three critical challenges you face daily. First, it eliminates longitudinal weld seams that create vulnerability points in high-pressure fluid networks. Second, the extra-low carbon matrix prevents intergranular corrosion during welding operations without requiring costly post-weld heat treatment. Third, the 2.0-2.5% molybdenum addition delivers robust defense against localized chloride pitting attacks in marine and coastal installations.

By adhering to EN 10216-5 specifications, these tubes provide full compliance with the Pressure Equipment Directive (PED 2014/68/EU). You receive guaranteed traceability and structural reliability for volatile fluid transport where safety cannot be compromised.

Technical Specifications

Superior Material Properties and Performance

The product is thoroughly optimised according to a chemical composition which provides an excellent corrosion resistance. A chromium concentration of 16.5-18.5% provides a stable passive oxide layer. A nickel content of 10.0-13.0% maintains the stability of the austenitic structure across large temperature ranges.

The inclusion of 2.0-2.5% molybdenum makes this grade different. This element greatly improves pitting and crevice corrosion resistance in chloride conditions. You get effective protection against assaults by organic acid, industrial chloride and sea salt spray.

The exceptionally low carbon standard (maximum.03%) eliminates carbide precipitation during welding. That implies that your fabrication teams may finish joints without the danger of sensitisation zones that usually fail in corrosive use. No post-weld heat treatment is necessary, lowering project time and costs.

Mechanically you will get a yield strength of at least 190 MPa and tensile strength of 490-690 MPa. It has good cryogenic toughness down to -196°C and strong thermal oxidation resistance up to 800°C, although pressure ratings must be de-rated over 450°C.

Quality Assurance and Manufacturing Excellence

Seamless tubes are subjected to a sophisticated multi-pass precision cold drawing. This method reduces the structural weaknesses of welded pipe manufacturing. You get absolute zero-leak operational safety for your mission-critical pressure applications.

All tubes are 100% online eddy current diagnostic scanned for longitudinal and transverse fault. Ultrasonic volume monitoring ensures consistent wall thickness and room temperature tensile testing validates that the mechanical qualities are at or above standard criteria.

Hydrostatic pressure testing is generally conducted at pressures above 70 bar, subject to wall thickness requirements. Intergranular corrosion tests are performed according to ISO 3651-2 to confirm that the low carbon matrix is resistant to grain boundary attack.

Representative batch coupons are subjected to strict mechanical flattening tests, flare expansions at cross section and Positive Material Identification (PMI) analysis. A thorough testing system ensures structural integrity prior to shipping.

Customization Capabilities for Your Specific Needs

We understand that standard dimensions rarely fit every application perfectly. Our en 10216-5 1.4404 tube supports tight fractional diameter calibrations and exact fixed straight segments tailored to your engineering layout tolerances.

Surface finish options include solution annealed and pickled (SA&P) descaled surfaces for general industrial use. For pharmaceutical and food processing applications requiring ultra-clean internal surfaces, we provide high-purity electro-polished finishes with Ra values below 0.8μm.

End configurations can be customized for swift field assembly. We offer precision square-cut plain ends with complete burr-free facing, customized beveling tailored to match automated welding setups, and precision NPT or BSPT taper threading.

Dimensional tolerances typically follow EN ISO 1127 standards. For high-precision applications, we provide D4/T4 tolerances offering tighter outside diameter and wall thickness control.

Wide-Ranging Industrial Applications

The product serves three primary demanding environments where material failure carries severe consequences.

Chemical and Petrochemical Processing Your heat exchangers and reactors handling organic and inorganic acids are constructed seamless eliminating the possibility of weld-seam preferential attack. This molybdenum-enriched formulation resists intense chemical attacks that would soon erode normal austenitic grades.

Marine and Offshore Engineering Hydraulic control lines and instruments tubes on offshore sites are continuously exposed to salt spray and chloride caused stress corrosion cracking. The strong alloy matrix provides long term durability in these adverse environments.

Pharmaceutical and Food Technology: High purity fluid transfer systems need smooth interior surfaces and resistance to CIP (Clean-in-Place) chemicals. Our bright annealed tubing is resistant to bacterial development and cross-contamination, and still retains its structural integrity during multiple cleaning cycles.

Other applications include coastal desalination facilities, medicinal fluid networks and heavy chemical reactors where corrosion resistance and operational safety are of the utmost importance.”

Complete Support and Certification

HEBEI ALL TRUST STEEL is certified to ISO 9001:2015 and welcomes independent witness audits by international inspection agencies, including SGS, TUV, DNV, and Bureau Veritas. You will have complete paperwork to satisfy international customs clearance and project compliance needs.

During the whole procurement process, our engineering team will provide you material selection advice, corrosion resistance studies and CAD design verification. We do third-party inspections at each step of the manufacturing process to make sure your exact requirements are followed.

All shipments are packed in heavy-duty plywood boxes or fumigated hardwood containers, hexagonal bundles coated with waterproof protective bags. The pipe ends are fitted with thick protective end caps and secured with high-tensile steel straps, to avoid surface damage during international shipment.

FAQ

Q: What is the difference between 1.4401 and 1.4404 tubes?

A: Both include molybdenum but 1.4404 has a lower carbon concentration (max. 0.03% vs 0.07%). This makes the goods better for welding applications as it prevents sensitisation and intergranular corrosion in the heat affected zones.

Q: Can this tube be utilised for high-pressure hydrogen service?

A: Yes, 1.4404 has an excellent resistance to hydrogen embrittlement because to its austenitic structure, provided that surface polish and inclusion levels are well controlled during manufacture.

Q :What are the dimensional tolerances of the product?

A：Standard tubes according to EN ISO 1127. Require tighter control on OD and wall thickness? For your particular needs, D4 / T4 tolerances are available for high precision applications.

Q: Need impact test for EN 10216-5?

A：Impact tests at -196°C or -46°C may be done for cryogenic applications or special design requirements to prove low-temperature robustness and safe operation under severe temperatures.

Q: What can I do to ensure the product is authentic?

A：Check the tube marking, which must include our manufacturer logo, the standard designation "EN 10216-5", grade "1.4404", heat number, and TC1 or TC2 category. This information should be cross referenced to the given EN 10204 3.1 certificate for full traceability.

Contact Us

Ready to specify corrosion-resistant tubing that delivers decades of reliable service with the en 10216-5 1.4404 tube? Contact our technical team at info@hballtrust.com for material selection guidance and competitive quotations tailored to your application requirements.