en 10217-7 1.4301 tube

EN 10217-7 1.4301 Tube – Premium European Standard Pressure Piping Solution

HEBEI ALL TRUST STEEL CO., LTD specializes in manufacturing en 10217-7 1.4301 tube products engineered to European precision standards for industrial pressure applications. Manufactured using high-end longitudinal TIG and laser welding technologies, our welded stainless steel tubes provide an outside diameter accuracy of ±0.2 mm and a wall thickness tolerance of ±10% for reliable results. Offering a dependable and cost-effective pressure tubing product with an annual capacity of over 15,000 tons and a 100% hydraulic testing rate. All batches of product are tested for eddy current and come with comprehensive EN 10204 3.1 Mill Test Certificates, assuring full compliance with the requirements of the PED 2014/68/EU regulation for critical fluid transport systems.

What Is EN 10217-7 1.4301 Tube?

The product is a welded austenitic stainless steel pressure tube manufactured to the stringent European requirements. Grade 1.4301 (X5CrNi18-10) is equal to AISI 304, with 17.5 to 19.5% chromium and 8 to 10.5% nickel, which gives a stable austenitic structure that is resistant to oxidation and mild corrosive media.

This welded tube solves key technical problems. Fluid leaks under prolonged pressure may pose safety issues and interrupt manufacturing processes. Structural failure is costly in terms of downtime and environmental pollution in corrosive settings. Traditional carbon steel solutions corrode quickly and need to be replaced often.

The device offers a leak-proof, hygienically clean solution for the transportation of liquids and gases. The tube is highly weldable, ductile (minimum 45% elongation) and dimensionally stable. This makes it perfect for systems that need standardisation in terms of safety compliance.

Technical Specifications

Core Product Advantages

Superior Welding Technology & Structural Integrity

Our en 10217-7 1.4301 tube is manufactured using state-of-the-art continuous automated TIG or laser fusion lines. Premium European-standard steel strips are precision roll-formed and joined without filler metal addition, ensuring exceptional metallurgical homogeneity. Comprehensive internal weld bead removal optimizes fluid dynamics and eliminates turbulence zones that could harbor contaminants.

The longitudinal weld seam undergoes mandatory 100% online eddy current diagnostic scanning. This non-destructive testing protocol detects microscopic surface and subsurface defects invisible to visual inspection, guaranteeing absolute joint fusion integrity before your tube reaches the installation site.

Exceptional Cost-Effectiveness & Production Efficiency

However, the welded tubes will function the same as the seamless tubes under pressure and at far reduced material and energy costs. Our automated manufacturing processes guaranty the outside diameter precision and balanced wall thickness distribution, saving field installation time and welding preparation.

You may purchase variable quantities without paying a fee. Be it 500 metres for a trial project or 50,000 metres for a large scale plant build our 5,000+ ton rolling inventory and 15+ key mill agreements assure supply stability and affordable unit pricing.

Full Dimensional Customisation

We are quite flexible on a wide range of sizes in our production capabilities. Outer diameters vary from tiny 6.0-mm instrument tubing to huge 1219.2-mm process headers. Wall thicknesses are tightly regulated from 0.5 mm for low pressure distribution to 30.0 mm for high stress applications.

Custom bevel angles cut down on field welding. Fixed or random lengths for your particular pipe arrangement needs. With laser cutting technology, we provide square, burr-free ends, decreasing fitting preparation time by as much as 40%.

Strict quality testing and certification

Each batch undergoes multi-stage quality testing. The chemical composition, determined by means of optical emission spectrometry, verifies the chromium and nickel contents according to EN 10088-2. Mechanical testing involves transverse weld stress testing, flattening tests and hardness verification to confirm structural ductility.

Additional intergranular corrosion testing in accordance with EN ISO 3651-2, for TC2 (Test Category 2) applications, helps verify that weld zones are immune to degradation in chloride polluted environments. Third party inspection by SGS, BV, TUV or DNV may be provided on request, independent validation for important safety applications.

Industrial Uses

Pharmaceutical & Chemical Processing

The product is corrosion resistant and retains product purity for pressure pipe systems in mild acids, bases and solvents. The smooth pickled inside surface minimises particle collection and eases Clean-In-Place (CIP) validation methods needed by GMP requirements.

The austenitic structure of the tube is stable during the temperature variations typical of batch reactors and distillation columns. You prevent the heat cycle brittle failure risk typical with ferritic grades.

Food and Beverage Processing

Tubes used in high-pressure steam sterilisation systems and thermal processing loops need materials that can endure repeated heating to 140°C and quick cooling without structural damage. Our tubes are hygienic during long service life and are FDA 21 CFR 177.2600 compliant for food contact surfaces.

The resistance of the tube to citric acid, acetic acid, and other organic food-grade cleaning agents increases the maintenance intervals. Bright annealed finishes have very fine surface roughness (Ra < 0.8 µm) which reduces bacteria adherence and eases sanitation operations.

Energy & Power Generation

Condenser tubes and feedwater distribution systems require pressure-resistant piping that maintains dimensional stability under continuous vibration and thermal stress. While not suitable for seawater environments (where 1.4404/316L is preferred), the en 10217-7 1.4301 tube excels in demineralized water circuits and low-chloride cooling systems.

The tube's excellent thermal conductivity (16.2 W/m·K at 100°C) enhances heat exchanger efficiency. High ductility accommodates thermal expansion without cracking, reducing maintenance-related shutdowns during plant operation.

Quality Control & Testing Procedures

Raw Material Verification

We only buy from ISO 9001 certified factories manufacturing virgin stainless steel. The incoming batches of steel strip are spectrographically analysed to verify the level of chromium, nickel, molybdenum, carbon and nitrogen according to EN 10088-2. Complete traceability of heat numbers means material pedigree documentation for key projects.

In-Process Monitoring

Real time laser diameter measuring devices assess exterior dimensions during forming and welding processes. Wall thickness gauges at 10 metre intervals detect variations over the + - 5% tolerance limits and modify the production automatically. Post-weld solution annealing at 1040 to 1100 C recovers parent metal ductility and relieves residual forming stresses fully.

Final Inspection & Documentation

By visual inspection it is possible to detect surface defects deeper than 5% of wall thickness. Dimensional checking validates outer diameter and wall thickness EN ISO 1127 D3/T3 or D4/T4 limits. Leak-proof performance is verified by pneumatic or hydrostatic testing at 1.5× design pressure.

Each shipment is accompanied with EN 10204 3.1 Mill Test Certificates with details of chemical composition, mechanical qualities and heat treatment parameters. PMI (Positive Material Identification) reports provide you independent confirmation of the legitimacy of the material grade.

Packaging & Worldwide Logistics

Your tubes are strapped tightly in hexagonal bundles with high strength steel strapping at 800 mm intervals. The bundles are fully enclosed in heavy-duty waterproof woven bags to prevent moisture entry during maritime transportation and outdoor storage. Hard plastic end covers protect tube ends from impact damage and contamination.

For big diameter tubes >300 mm OD we use fumigation-free plywood containers with interior padding to avoid distortion during handling. Commercial invoices, packing lists, certificates of origin and inspection reports are provided to ensure smooth customs clearance.

We ship from Shanghai, Ningbo, Tianjin, Qingdao, Shenzhen port with flexible trading terms of FOB, CFR, CIF, DDP . Mixed container loading is a combination of pipes, fittings, flanges and valves to maximise freight costs for purchase of full piping system.

FAQ

Q：What defines the primary structural advantages of this product in standard industrial applications?

A：Utilizing specialized automatic longitudinal straight-seam technology, this tube provides exceptional outer diameter consistency, absolute wall thickness uniformity, and high-efficiency cost-effectiveness for low-to-medium pressure fluid grids.

Q：How is the structural reliability of the longitudinal weld locked in during the factory forming process?

A：Premium European-standard steel plates are precision roll-formed and joined via advanced automatic TIG or laser fusion lines without filler metal, featuring comprehensive internal weld bead removal to optimize fluid dynamics.

Q：What strict non-destructive criteria must the weld track successfully clear before international delivery?

A：The entire length of the straight-seam weld joint is subjected to mandatory 100% automated online eddy current diagnostic scanning or high-pressure hydrostatic leakage pressure validation to guarantee absolute joint fusion.

Q：What dimensional customization scales are available for diverse plant or structural engineering blueprints?

A：We support wide manufacturing flexibility across massive dimensional spectrums from 6.0 mm up to 1219.2 mm, offering customized wall thicknesses, tailor-made edge profiles, and fixed or custom length structures.

Q：What robust shipping protection is allocated to shield this en 10217-7 1.4301 batch from humidity?

A：The tubes are secured into tight hexagonal bundles strapped with high-tensile steel bands, wrapped entirely inside heavy waterproof weaving bags, and fitted with protective hard plastic end caps.

Contact Us

Ready to secure reliable austenitic pressure tubing for your next project with the en 10217-7 1.4301 tube? Our engineering team responds within 1 hour during business hours. Contact us at info@hballtrust.com to discuss your pressure piping requirements today.