EN 10219 S235JRH Hollow Pipe for Welding Structure

EN 10219 S235JRH is a cold‑formed, high‑frequency welded (HFW/ERW) hollow structural section (HSS) made of non‑alloy fine‑grain steel, optimized for welded construction with guaranteed room‑temperature toughness and excellent weldability.

Standard & Grade

Standard: EN 10219 (Non‑alloy and fine grain steels – Cold‑formed welded structural hollow sections – Technical delivery conditions)

EN 10219‑1: Technical delivery requirements (chemistry, mechanicals, testing)

EN 10219‑2: Dimensions, tolerances, section properties

EN 10219‑3: High‑strength and weathering steel grades

Grade: S235JRH (Steel number: 1.0039)

S: Structural steel

235: Minimum yield strength ReH ≥ 235 MPa (t ≤ 16 mm)

JR: Charpy V‑notch impact ≥ 27 J at +20°C (longitudinal)

H: Specially designed for hollow sections (EN 10219)

Manufacturing Process

Cold forming: Steel strip rolled into round/square/rectangular tube

High‑frequency welding (HFW/ERW): No filler metal, fusion under pressure

Weld conditioning: Internal/external bead trimmed

Finishing: Sizing, straightening, cutting, non‑destructive testing (UT/MT)

Key Advantages for Welded Structures

Excellent weldability: Low carbon & CEV, minimal preheat required

Stable toughness: Guaranteed impact at +20°C for structural safety

Good formability: Cold bending & fabrication without cracking

Dimensional precision: Strict tolerances per EN 10219‑2

Cost‑effective: Balanced strength‑to‑cost ratio for general construction

Typical Applications

Building frames, columns, beams, trusses, bracings

Bridge components, industrial structures, machinery frames

General engineering, support structures, scaffolding

Any welded steel structure requiring reliable toughness and weldability