S235jrg2 Spiral Welding Pipe for Construction & Water Pipelines

• Customization: Available
• After-sales Service: Yes
• Warranty: Yes
• Model NO.: S235JRG2 Spiral Welding Pipe
• Type: Pipe
• Technique: Spiral Welding
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose, Construction & Water Pipelines
• Section Shape: Round
• Steel Grade1: S235jrg2
• Steel Grade2: ASTM A210/A210m, ASTM A333/A333m, ASTM A335/A335m
• Thickness: 1-150mm/Customized
• Size: 1/4"-4" , Customized
• Tensile Strength: 415–585 MPa (Varies by Grade)
• Tolerance: ±5%
• End: Plain End/Bevel End
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Heat Treatment
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Certification1: Compliant with En 10210-1/2, Mtr
• Surface: Hot-Finished/Cold-Finished
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10, 000, 000 Kgs/Year

Product Description

Carbon Steel Pipe

Steel tubes are versatile and important products in the engineering and construction industries. Their unique material properties, manufacturing processes, and wide range of applications make them a crucial component.

Package	Reinforced plywood case bysted angle bar,  Playwood cased Plastic bags packing, Condenser,  heat exchanger tube packing,  U-tube packed with wooden cases.
Related steel grades	ASTM A53/A53M, ASTM A106/A106M, ASTM A179/A179M, ASTM A192/A192M, ASTM A210/A210M, ASTM A333/A333M, ASTM A335/A335M, ASTM A500/A500M, ASTM A523/A523M, ASTM A135/A135M API 5L PSL1/PSL2, ISO 3183 EN 10210, EN 10216, EN 10217, EN 10255 JIS G3452, JIS G3454, JIS G3455, JIS G3456, JIS G3457 GB/T 8162, GB/T 8163, GB/T 3087, GB/T 5310, GB/T 9711 ASME B36.10M, ASME B36.19M
TPI	TUV, SGS, BV, Lloyd's, etc.
Payment:	L/C at sight, L/C 180 days, T/T, D/P, OA, Western Union,

Specification

S235JRG2 Spiral Welding Pipes are carbon steel pipes manufactured using the spiral welding process, where a continuous steel strip is formed into a spiral shape and welded along the seam. S235JRG2 is a non-alloy structural steel grade specified by EN 10025-2, known for its good weldability, formability, and moderate strength, making it suitable for general structural and industrial applications. The spiral welding technique allows for the production of large-diameter pipes efficiently, with consistent structural integrity. These pipes are cost-effective compared to seamless or straight-seam welded alternatives for large-scale projects, offering reliable performance in low to medium pressure and non-critical corrosive environments.

Size

- Outer Diameter (OD): Typically ranges from 219 mm (8.62 inches) to 3000 mm (118.11 inches), with flexibility to produce larger diameters based on project requirements.

- Wall Thickness: Generally 3 mm to 25 mm, with tight tolerances to ensure uniform structural performance. Thicker walls can be customized for higher load-bearing applications.

- Length: Standard lengths are 6 m, 12 m, or as per customer specifications (up to 18 m), with options for cut-to-length services. Ends are typically beveled for welding or fitted with flanges, couplings, or other connectors.

Testing

- Tensile Strength: 360–510 MPa.
- Yield Strength: ≥235 MPa (at 16 mm thickness; slightly lower for thicker sections).
- Elongation: ≥25% (ensures ductility for forming and handling).
- Impact Testing: Charpy V-notch test at 20°C, with a minimum impact energy of 27 J (confirms toughness for structural safety).
- Weld Quality Testing:
- Visual Inspection: Checks for weld seam uniformity, surface defects, and dimensional accuracy.
- Ultrasonic Testing (UT): Detects internal or subsurface defects in the weld seam and base metal.
- Radiographic Testing (RT): Used for critical applications to inspect weld integrity and detect hidden flaws.
- Hydrostatic Testing: 100% of pipes undergo hydrostatic pressure testing (typically 1.5 times the design pressure) to verify leak tightness and structural strength.
- Dimensional Inspection: Verification of OD, wall thickness, length, and straightness using calibrated tools.

Composition

S235JRG2 is a low-carbon steel with the following typical chemical composition (by weight):
- Carbon (C): ≤0.20% (ensures good weldability and ductility).
- Manganese (Mn): 0.40–1.20% (enhances strength and workability).
- Silicon (Si): ≤0.30% (aids deoxidation during manufacturing).
- Sulfur (S): ≤0.045% (limits brittleness, critical for weld integrity).
- Phosphorus (P): ≤0.040% (controls ductility and reduces the risk of cold cracking).
- Trace elements: Iron (Fe) as the base metal, with minimal residual elements (e.g., copper, nickel) to maintain material purity.

Application

 - Water & Sewage Systems: Used in municipal water supply, wastewater treatment, and drainage networks due to good corrosion resistance (with proper coating) and large-diameter availability.
- Structural Engineering: Applied in building frames, bridges, and piling structures, leveraging their strength and cost-effectiveness.
- Oil & Gas Transportation: Suitable for non-critical onshore pipeline projects (e.g., low-pressure oil/gas gathering lines) where high strength is not the primary requirement.
- Industrial Piping: Utilized in power plants, chemical plants, and manufacturing facilities for conveying non-corrosive fluids (e.g., water, steam) and as structural supports.
- Infrastructure Projects: Used in irrigation systems, culverts, and tunnel construction, benefiting from their large diameter and ease of installation.

- Surface Treatment: Options include anti-rust painting, galvanizing, or epoxy coating to enhance corrosion resistance, especially for outdoor or underground applications.

- Welding Process: Spiral submerged arc welding (SSAW) is commonly used, ensuring high weld quality and continuous production for large diameters.

- Standards Compliance: Manufactured in accordance with EN 10025-2 (for S235JRG2 steel) and relevant pipeline standards such as EN 10217-7 or API 5L (for specific industrial uses).

- Packaging: Pipes are bundled with steel straps, wrapped in waterproof paper, and placed on wooden pallets or skids to prevent damage during transportation and storage.

Company Profile

 
EZ STEEL INDUSTRIAL Co., Ltd, together with LONG-RUN METALS Co., Ltd, is the export division and window company of EZ STEEL GROUP, which was founded in 1996 and has been committed to the development and manufacturing of industrial tubes in the past 20 years. It is one of the largest steel tube manufacturing enterprise groups in China. 

Certifications

FAQ