Hebei Huayang Steel Pipe Co., Ltd is one of the most experienced manufacturers and suppliers of en 10219 377×8 s355j0h in China. Welcome to buy discount en 10219 377×8 s355j0h made in China here from our factory. Quality products and low price are available.

Product introduction

EN 10219 377×8 S355J0H Structural Steel Pipe

Name: China EN 10219 377×8 S355J0H Manufacturers Suppliers Factory - Huayang Steel Pipe
Brand: Huayang
SKU: 299863418

Product Overview

EN 10219 377×8 S355J0H is a cold-formed welded structural hollow section (round pipe) manufactured in accordance with European standard EN 10219-1/-2. It features an outer diameter of 377 mm, wall thickness of 8 mm, and high-strength structural steel grade S355J0H. This pipe offers excellent mechanical properties, good low-temperature toughness, and dimensional precision, widely applied in construction, bridges, steel structures, and general engineering.

Basic Specifications

Item	Details
Standard	EN 10219-1 (Technical delivery), EN 10219-2 (Dimensions & tolerances)
Size	377 mm (OD) × 8 mm (WT)
Steel Grade	S355J0H (Steel no. 1.0547)
Manufacturing Process	Cold-formed welded (ERW/LSAW)
Length	6.0 m, 12.0 m; Custom fixed lengths available
End Finish	Plain End (PE), Beveled End (BE) – optional
Surface Treatment	Anti-rass oil, black paint; Optional galvanized/3PE coating
Delivery Condition	As-rolled, Normalised (N)

Symbol Interpretation

S: Structural steel

355: Minimum yield strength 355 MPa (t ≤ 16 mm)

J0: Impact energy ≥ 27 J at 0°C (Charpy V-notch)

H: Hollow section (circular)

Chemical Composition (Max %, Ladle Analysis)

Element	C	Si	Mn	P	S	Nb
Limit	≤ 0.22	≤ 0.55	≤ 1.60	≤ 0.035	≤ 0.035	≤ 0.009

Carbon Equivalent (CET): ≤ 0.42% (for good weldability)

Mechanical Properties

Property	Value
Yield Strength (ReH)	≥ 355 MPa (t ≤ 16 mm) / ≥ 345 MPa (16 < t ≤ 40 mm)
Tensile Strength (Rm)	470 – 630 MPa
Elongation (A)	≥ 20%
Impact Energy (KV, 0°C)	≥ 27 J (longitudinal)
Hardness	≤ 265 HV10
Bend Test	180° cold bend, no cracks (d=3a)

Dimensional Tolerances (EN 10219-2)

Outer Diameter (OD): ±1.0% (min ±0.5 mm) → ±3.77 mm

Wall Thickness (WT): ±10% → ±0.8 mm

Length: ±3 mm/m (fixed length)

Ovality: ≤ 2% of OD

Straightness: ≤ 2 mm/m

Key Features & Advantages

High Structural Strength: S355 grade delivers superior load-bearing capacity.

Good Toughness: Qualified impact performance at 0°C, suitable for low-temperature environments.

Precise Dimensions: Strict EN 10219 tolerances ensure easy installation.

Excellent Weldability: Controlled chemistry and low carbon equivalent.

Versatile Fabrication: Suitable for cutting, bending, welding, and machining.

European Standard Compliance: Fully certified for structural engineering projects.

Typical Applications

Building steel structures: Columns, beams, supports

Bridge construction and infrastructure

Offshore/onshore structural components

Industrial machinery frames and support structures

Power transmission towers and utility poles

General engineering and structural fabrications

Inspection & Testing

Chemical composition analysis

Tensile, flattening, and bend tests

Charpy impact test (0°C)

Hydrostatic / ultrasonic test (UT)

Dimensional and visual inspection

Hardness test (HV10)

Packaging & Marking

Packaging: Steel bundles, plastic end caps, seaworthy export packing.

Marking: Standard stenciling - Standard, Grade, Size, Heat No., Length, Manufacturer logo.

Quality Assurance

Full compliance with EN 10219-1/-2

ISO 9001 quality management system

Material Test Certificate (MTC) provided per batch

Third-party inspection (SGS/BV) available upon request

About us

Hebei Huayang Steel Pipe Co., Ltd. was founded in 2005, with a registered capital of 500 million yuan. The company covers an area of more than 1,000 mu, with annual sales of 10 billion yuan, more than 600 employees and an annual productivity of 2.75 million tons. The company has 17 new automatic steel pipe production lines and 14 high-frequency production lines, with a diameter of 73-660 mm; Three double-sided submerged arc welded steel pipe production lines with diameters of 406.4-1422.4mm;; 24 hot tube expanding production lines, with a diameter of 230-820mm; Two anticorrosion steel pipe production lines with a diameter of 73-1626 mm; 2 automatic painting production lines. With 3 branches and 5 offices, the products are sold to various cities and exported to more than 80 countries such as Southeast Asia, Middle East, Europe and America.

Packaging, transportation and delivery

Packaging, transportation and delivery

At Hebei Huayang Steel Pipe Co., Ltd., we apply standardized and reliable packaging solutions for all our steel pipe products. Our pipes can be securely packed by hexagonal bundling or circular bundling according to product diameter, wall thickness and customer requirements. Each pipe end is protected with high‑strength plastic pipe caps to avoid collision damage, dust and moisture during transportation and storage. The whole bundle is firmly wrapped with durable woven bags to enhance stability and prevent scratches or deformation.

We support a complete range of transportation methods to satisfy global customers, including road transportation, railway transportation, sea freight and container shipping. Based on our strategic location in Cangzhou, Hebei Province, we enjoy convenient access to major ports such as Tianjin Port, which greatly improves logistics efficiency and reduces transportation costs.

For standard specifications and normal order quantities, the general delivery time is about 30 days after order confirmation and deposit receipt. For large‑scale orders, special sizes or customized processing requirements, our production and sales team will formulate a detailed production plan and provide an accurate delivery schedule accordingly to ensure on‑time supply and stable performance for projects and clients worldwide.

Strict quality control

1. During and after the production, experienced quality inspectors randomly check the products to ensure that each steel pipe is qualified for production and application.

2. A nationally recognized laboratory with CNAS certification and certification by French Classification Society.

3. Have CNOOC access certificate, KOC oil company access network, ADNOC Abu Dhabi oil company access network, Petrobras access network, etc.

4. Accept the inspection by the third party designated/paid by the buyer, such as SGS and BV.