- English
- Español
- Português
- русский
- Français
- 日本語
- Deutsch
- tiếng Việt
- Italiano
- Nederlands
- ภาษาไทย
- Polski
- 한국어
- Svenska
- magyar
- Malay
- বাংলা ভাষার
- Dansk
- Suomi
- हिन्दी
- Pilipino
- Türkçe
- Gaeilge
- العربية
- Indonesia
- Norsk
- تمل
- český
- ελληνικά
- український
- Javanese
- فارسی
- தமிழ்
- తెలుగు
- नेपाली
- Burmese
- български
- ລາວ
- Latine
- Қазақша
- Euskal
- Azərbaycan
- Slovenský jazyk
- Македонски
- Lietuvos
- Eesti Keel
- Română
- Slovenski
- मराठी
- Srpski језик
Linear Seam Welded Steel Pipe
Manufacturers and contractors seeking robust, dimensionally accurate, and readily available steel piping solutions consistently turn to Linear Seam Welded Steel Pipe. This category, also frequently referred to as Straight Seam Welded Steel Tube or ERW Longitudinal Welded Pipe, defines a high-efficiency manufacturing process where the longitudinal seam is formed and welded in a straight line parallel to the pipe's axis. The production method is highly automated, ensuring consistent wall thickness and excellent roundness, which is critical for structural integrity and fluid flow. These pipes are a cornerstone for structural frameworks, mechanical systems, and low to medium-pressure fluid transport. The inherent strength and straightness of a Straight Welded Seam Steel Pipe make it the preferred choice for architectural columns, conveyor rollers, and fencing systems. For applications demanding a balance of performance and cost-effectiveness, a Longitudinal Seam Welded Tube offers an optimal solution, providing reliable performance without the premium cost of seamless alternatives.
The manufacturing excellence of a Linear Seam Welded Steel Pipe begins with high-quality steel coils, which are unrolled, leveled, and formed through a series of rolls. The edges are prepared and brought together under controlled pressure and heat to create a uniform longitudinal weld. This process is precisely calibrated to produce pipes with exceptional dimensional tolerances. Key parameters that define the suitability of these pipes for specific projects include material grade, dimensions, wall thickness, and mechanical properties. The following specifications provide a detailed overview of the standard and custom offerings available.
- Material Standards: Manufactured from carbon steel grades per ASTM A53, ASTM A500, ASTM A501, and ASTM A36. Also available in low-alloy and high-strength low-alloy (HSLA) steels.
- Welding Process: Utilizes high-frequency induction welding (HFIW) or electric resistance welding (ERW), ensuring a clean, strong, and consistent seam.
- Surface Finish: Standard mill finish (unpainted), black, galvanized (hot-dip or electro-galvanized), or with various primer coatings.
- End Finish: Plain ends, beveled ends for welding, or threaded ends as per customer requirements.
- Testing & Certification: All pipes undergo rigorous non-destructive testing (NDT), including ultrasonic or eddy current testing. Full material traceability and mill test certificates (MTC) are provided.
| Outer Diameter (OD) | Wall Thickness (WT) | Common Lengths | Primary Applications |
|---|---|---|---|
| 1/2" to 24" (13mm to 610mm) | Schedule 10 to Schedule 80 | 20 ft, 24 ft, 40 ft (6m to 12m) | Structural Framing, Handrails, Fencing |
| 26" to 48" (660mm to 1220mm) | 0.25" to 1.0" (6mm to 25mm) | Custom lengths up to 50 ft (15m+) | Piling, Large-Diameter Conduits, Casing |
| Square & Rectangular Profiles | 0.083" to 0.50" (2mm to 13mm) | 20 ft, 24 ft (6m to 7.3m) | Architectural Columns, Machine Bases, Supports |
| Grade / Specification | Yield Strength (min) | Tensile Strength (min) | Elongation (%) |
|---|---|---|---|
| ASTM A53 Grade B | 35,000 psi (240 MPa) | 60,000 psi (415 MPa) | – |
| ASTM A500 Grade B | 42,000 psi (290 MPa) | 58,000 psi (400 MPa) | 23 |
| ASTM A500 Grade C | 46,000 psi (317 MPa) | 62,000 psi (427 MPa) | 21 |
| ASTM A36 | 36,000 psi (250 MPa) | 58,000 - 80,000 psi (400-550 MPa) | 23 |
Related Products
Hot Products
Spiral welded pipe for water supply
In the field of water supply engineering, Spiral welded pipe for water supply are key materials for ensuring the safe and efficient transportation of water resources. Tianjin Xinlida Steel Pipe Co., Ltd., leveraging its extensive experience in the core steel pipe business, provides the market with high-quality spiral welded pipes for water supply, meeting the needs of various sectors such as construction, energy, and transportation.
Seamless Steel Pipe
The Seamless Steel Pipe manufactured by Xinlida factory, with its excellent pressure-bearing capacity and toughness, can be widely applied in high-pressure working conditions. It can be seen in petrochemical, power, water and gas transmission, mechanical manufacturing, aerospace and other fields. The wall thickness of the product can be made to 10mm-60mm, and the pipe diameter can be customized from φ57mm to φ630mm as required. The steel pipes produced by Xinlida Steel Pipe have uniform wall thickness and precise tolerance control, capable of withstanding harsh working conditions such as high pressure and heavy load. It is applicable to various occasions in the construction industry, etc.
Large Diameter Galvanized Elliptical Pipe
In many fields such as construction, machinery, agriculture, forestry, animal husbandry and fishery, the demand for Large Diameter Galvanized Elliptical Pipe is increasing day by day.Tianjin Xinlida Steel Pipe Co., Ltd. has been focusing on this since its establishment in 2015 and stands out in the market with professional strength.
Thin-Wall Spiral Welded Pipe
Tianjin Xinlida Steel Pipe Co., Ltd. has been deeply cultivated in the field of steel pipe manufacturing for many years, specializing in the production of Thin-Wall Spiral Welded Pipe. The products have received many praises for their excellent performance and quality.
Spiral welded pipe for steel structures
Tianjin Xinlida Steel Pipe Co., Ltd. focuses on its core steel pipe business, with Spiral welded pipe for steel structures being one of its core products. The products utilize mature welding technology, resulting in robust structures, excellent load-bearing capacity, and adaptability to various needs in steel structure construction, meeting relevant quality standards. Leveraging its import and export qualifications, the company engages in cross-border trade of spiral welded pipes for steel structures, covering overseas markets such as Southeast Asia and the Middle East. Its reliable quality and attentive service have earned recognition from customers both domestically and internationally. The products are highly adaptable, with specifications adjustable to meet the specific requirements of steel structure projects. The company provides efficient services throughout the entire process, from product selection to cross-border delivery, accurately matching needs and ensuring efficient order fulfillment, showcasing the company's strength and service advantages.
High-pressure cold-rolled seamless steel pipe
High-pressure cold-rolled seamless steel pipes are tubular products formed through a cold-rolling process. The pipe body has no weld seams and is specifically designed for use in high-pressure environments. Cold rolling allows for higher dimensional accuracy, more uniform wall thickness, and better surface quality compared to hot-rolled products. The absence of weld seams is crucial; any defects under high pressure can lead to leaks or even bursts, and the seamless structure significantly reduces this risk.
- Related Blog
- Reviews
