Sun Steel offers a wide range of premium-quality welded pipe variety tailored to meet the demands of various industries. Our products are renowned for their exceptional durability and resistance to abrasive flows. We supply 304 and 316L stainless steel pipes, known for their outstanding reliability and performance across a broad spectrum of industries.

Overview of Welded Stainless Steel Pipes

Our pipes are crafted to meet specific project requirements, including various diameters, lengths, and wall thicknesses, ensuring adaptability for a wide range of applications.

Key Specifications:

Size Range: ¼" - 84" NPS (custom sizes available upon request).
Stainless Steel Grades: 304, 304L, 316, 316L, 317, 321, 321H, among others.
Standards Compliance: ASTM / ASME.
Special Alloys: Duplex Stainless Steel (S31803, S32750), Nickel Alloys (N06625, N08825, N10276).
Wall Thickness: From 1.2mm to 30mm, varying based on specific sizes.
Pressure Ratings: Up to 42 Mpa (2500 psi), depending on the pipe and application.

Types of Welded Stainless Steel Pipes

304/304L Stainless Steel Welded Pipe

304 stainless steel pipe with welds is formed by rolling a sheet of 304 and using a precision weld to seal the joint. This type of welded pipe offers high structural integrity over a prolonged period of time. It also offers great formability, allowing our clients to get the exact shape, orientation, and mechanical tolerances required for any application of the 304 ss pipe.

Formability is not exclusive to 304 stainless steel pipe and is also offered by the lower carbon content 304L variety. The ability to create custom sizing and shape is essential for maintaining the integrity of the overall structure. Whether you're looking for a 304L or 304 stainless steel pipe, we can offer a range of sizes, lengths, and thicknesses.

316/316L Stainless Steel Welded Pipe

316L stainless steel pipe offers superior resistance to abrasion and chemically induced degradation. The reduced carbon content of this class of welded stainless steel pipe helps prevent carbide precipitation, making it a strong candidate for welding projects where no drop in integrity can be permitted.

Creating an environment in which the structural strength and chemical resistance of the piping are not impacted by continual usage is essential. Some engineers opt for the 316 stainless steel pipe option which has a slightly higher carbon content. It is made in the same way as a 316L tube by rolling a flat sheet and sealing the joint with a continuous precision weld.

Welded vs. Seamless Pipe: What's the Difference?

Welded stainless steel pipe is made by taking a flat sheet of material, rolling it into a cylinder, and then sealing the joint with a weld. Seamless pipes, on the other hand, are made by extruding a pipe from a solid block of the same metal, resulting in a pipe with a continual outer surface that doesn't need to be sealed with a weld. We can supply our stainless pipes in both of these configurations and can always provide detailed guidance on the best approach for the specific needs of your project. This includes custom solutions designed to fit to high degrees of accuracy.

Custom Welded Pipe Solutions

At Sun Steel, we understand that each project comes with unique challenges, which is why we offer fully customizable welded pipes, tailored to meet the precise demands of your application.

Flexible Diameter Options: Our welded pipes are available in diameters ranging from ¼" to 84" NPS, covering a broad spectrum of flow rates and volumes for industrial applications. This extensive size range allows us to accommodate varying operational requirements, from low-flow systems to high-capacity infrastructure projects.
Custom Lengths: We manufacture pipes in any length up to 12 meters (or longer, depending on project requirements), reducing the need for joints and fittings. This flexibility minimizes material wastage and ensures precise installations, which are critical for large-scale projects or spaces where every millimeter counts.
Precision Wall Thickness: Our stainless steel welded pipe options are available in wall thicknesses from 1.2 mm to 30 mm, with tolerances as tight as ±10%, ensuring optimal mechanical strength and durability. This precision is particularly important in high-pressure environments and ensures that pipes maintain structural integrity over extended service lifetimes.

Sun Steel’s commitment to providing custom solutions for 304 stainless pipe and 316L stainless steel pipe varieties means we collaborate closely with you to deliver the ideal product for your specific project needs. Whether it's high-pressure systems, corrosive environments, or complex installations, we ensure that our welded pipes meet the highest standards for performance and longevity.

Applications of Welded Stainless Steel Pipes

There is a wide array of industrial applications offered by our welded pipework, such as high-pressure fluid transport, safety-critical structural applications, and corrosion-resistant process piping. This could include things, such as hydraulic systems on the latest vehicles, moving hot water around large residential complexes, and delivering potent acidic solutions to key parts of a processing plant.

Fluid Transport and Distribution Systems

Fluid transport systems commonly include water supply systems that deliver hot water to every apartment in a high-rise complex. Developers come to us because they want to be able to ensure best-in-class mechanical performance and sealing in a way that will never compromise the overall delivery of their projects. In this particular industry, this is essential as it is typically driven by pressure differentials meaning durability is key. Our customers within this sector commonly cite the quality of our welds and the robust nature of the 304 ss pipe and 316L stainless steel pipes used as reasons for choosing us as their supplier.

Structural Applications

Structural applications such as providing support in high-rise buildings and transport bridges are common uses. The key parameter is the impressive strength-to-weight ratio that allows the pipes to support heavy loads while only making a small impact on the overall weight of the structure. This allows them to provide support without massively impacting the overall supporting architecture of the structure.

Marine and Coastal Applications

Our welded pipes offer exceptional resistance to rusting in highly saline environments meaning they are widely used in a vast array of marine and coastal applications. The resistance to rusting in the presence of sea salt means that they will not degrade over time at the same rate as other forms of pipe.

Pharmaceutical Manufacturing

Moving pharmaceutical products and their core ingredients is all about ensuring they remain pure and uncontaminated throughout every stage of the process. The integrity of the surface of our pipes makes them the ideal material of choice when purity is something that is non-negotiable. This allows for continual operation, full traceability during processing, and minimal downtime in what are typically high-throughput environments. They can also be used in food-grade facilities where full spectral purity of everything produced is essential to accurate production.

These applications highlight the versatility and reliability of Sun Steel's welded stainless steel pipes across various industrial sectors.

Why Choose Sun Steel?

Sun Steel has an unblemished reputation for delivering exceptional quality welded pipe selection, including 304 stainless pipe and 316L stainless steel pipe varieties. Our expert team works in line with your specified sizing from day one, continually optimizing and refining our processes to ensure every fine detail is accurately taken care of. The way we work is designed to provide the peace of mind that can only be achieved when you come to the experts:

Full quality assurance checks are carried out at every stage of the manufacturing cycle to make sure the fine details are never missed.
Complex supply chains have been built to ensure welded stainless steel pipe quality assurance.
Fluid communication puts you in control of your project so that you never have to chase for updates.
In-depth application knowledge guarantees that we will be able to deliver your project on time and on budget

Sun Steel’s 316L and304 stainless pipe varieties are made and delivered in line with all of the very latest ASTM and ASME standards to ensure exceptional quality. The result is a full collection of quality products that every project manager and engineer can rely on from beginning to end.