AISI304 EN10217-7 Welded tube

When it comes to stainless steel tubing for pressure applications, precision, hygiene, and durability are non-negotiable. At SUNNING STEEL LIMITED, we supply AISI 304 welded tubes manufactured in compliance with EN 10217-7, delivering consistent performance in industries where cleanliness, corrosion resistance, and strength are critical.

These longitudinally welded tubes are made from austenitic stainless steel AISI 304 (1.4301) — a material prized for its excellent weldability, formability, and resistance to a wide range of chemicals. With applications spanning from food and beverage production to chemical processing and architectural installations, our EN 10217-7 tubes are engineered for confidence under pressure.

Highlighted Features

EN 10217-7 is the European standard specifically for welded stainless steel tubes used in pressure environments. Compared with decorative or structural tubing, these products are required to meet strict technical conditions for testing, tolerances, and mechanical performance.

SUNNING STEEL produces these tubes using TIG or laser welding methods, ensuring a clean, uniform weld seam with no filler materials — ideal for sanitary or corrosive environments. Each tube undergoes comprehensive non-destructive testing (NDT) to verify weld integrity and surface finish.

Whether you're outfitting a hygienic processing line, constructing a boiler system, or installing fluid transport pipelines, our EN 10217-7 tubes offer a certified, long-lasting solution.

Product Overview

• Grade: AISI 304 / 1.4301 (other grades such as 316/316L available on request)
• Standard: EN 10217-7 (Pressure purpose, stainless steel, welded)
• Process: Cold-formed and longitudinally welded (TIG or laser)
• Surface Finish: Mill finish, pickled, or polished (Ra ≤ 0.8 µm available)
• Certification: EN 10204 3.1 / 3.2, PED 2014/68/EU compliance

Technical Specifications

Dimension Range
Outer Diameter (OD)	6 mm – 508 mm
Wall Thickness	0.5 mm – 6.0 mm
Length	6 meters (standard) or custom lengths
Tolerance	As per ISO 1127 (D4/T3 or tighter upon request)

Mechanical Performance

• Tensile Strength (Rm): ≥ 520 MPa
• Yield Strength (Rp0.2): ≥ 210 MPa
• Elongation (A5): ≥ 45%
• Hardness (HRB): ≤ 90

All tubes are pressure-tested in compliance with EN standards to ensure leak-proof performance under specified operating conditions.

Applications Across Industries

Our EN 10217-7 tubes, crafted from AISI 304 stainless steel, are widely utilized in sectors that demand high corrosion resistance and hygiene, such as:

• Food & Beverage Processing Lines
• Pharmaceutical & Biotechnology Equipment
• Chemical and Petrochemical Plants
• Water Purification Systems
• Heat Exchangers & Pressure Vessels
• Architectural Installations with Sanitary Requirements

They are especially ideal for systems where sterility and compliance with EU Pressure Equipment Directive (PED) are required.

Quality Service

• Quality Assurance Fully Aligned with ISO, EN, and PED Requirements
• Global Export Capability and multilingual technical support
• Flexible Customization Options for size, finish, and certification
• Competitive Lead Times with reliable shipping worldwide