Seamless Pipe


Overview of Seamless Pipe

Seamless pipes, crafted meticulously from stainless steel billets, stand as a testament to strength and durability. While welded pipe manufacturing techniques involve joining sections of steel together, seamless pipe manufacturing ensures a continuous and flawless structure. When you choose seamless pipes, you’re investing in a piping product that boasts no welded areas, ensuring a robust resistance against corrosion, erosion, and general failure. This makes them an ideal choice for industries that prioritize strength and longevity. While they might come at a premium, costing 25-40% more than ERW pipes, their resilience and wide range of sizes from 1/8 inches to 36 inches make them worth the investment. With seamless steel pipes, you’re not just purchasing a product; you’re investing in reliability and performance.

For more details, here is the comparison of seamless pipes and welded pipes

Seamless Pipe Specifications

Our seamless pipes are a marvel of engineering precision. Ranging in sizes from 1/8 inches to 36 inches, they are produced using high-quality carbon or alloy steel. The production process ensures a perfect balance between diameter and wall thickness. We offer various steel grades, catering to your specific needs. The surface coatings are tailored to resist environmental challenges, ensuring longevity. Our pipes come with diverse end types and joint methods, providing flexibility in application. Additionally, we offer specialized machining services to cater to unique requirements. When you choose our seamless pipes, you’re opting for precision, versatility, and quality.

Production ProcessSMLS PIPE
Outside Diameter13.7mm ~914mm(1/4″ ~ 36″)
Wall Thickness1.65mm ~ 30.96mm (SCH 5S ~ SCH XXS)
Pipe Length3~ 18 meters
Production StandardsAPI 5L/API 5CTASTM A192ASTM A312
ASTM A106ASTM A210DN17175/EN10216 /DIN1629
ASTM A179/ASTM A789/ASTM A333ASTM A213DIN2391/EN10305-1
Corrosion PreventionLacquer, Varnish, Oiling, HDG, Pre-Galvanizing
End ProcessesSquare Cut, Bevelling, Threading, Grooving
Joint MethodFitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Further ProcessingWelding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding
Product UsagePetroleum, Liquid & Gas Transmission, Structure, Piling Job, Mining, Agriculture, Fabrication, Fire Fighting, Heat Exchanging

Where Seamless Steel Pipe are Used?

Seamless steel pipes are the unsung heroes in numerous industries. They play a pivotal role in transporting essential fluids, from oil and natural gas to water. Their strength and durability make them indispensable in high-pressure applications, boiler and condenser tubes, and chemical processing. Beyond this, they find extensive use in underground water systems, sewage treatments, and steel scaffolding. Their adaptability extends to transporting oil & gas and serving as the backbone in construction projects. When you incorporate our seamless pipes into your projects, you’re ensuring efficiency, safety, and reliability.

Oil & Gas


Water Transmission

Piling Work

Solar Energy

Mechanical Engineering

Fire Fighting

Steel Fabrication

How is Seamless Pipe Made?

The journey of creating our seamless pipes begins with high-quality billets. These raw materials are introduced to the pipe mill, where they undergo a transformative process. Starting with a solid billet, the casts are meticulously shaped into pipes through four distinct manufacturing methods, including the extrusion process, ensuring the absence of any longitudinal weld seam. The result is a solid, homogeneous piece of steel. Our commitment to excellence extends to the meticulous application of heat treatment during the manufacturing process. The steel pipe is then heated and stretched over a series of mandrels to achieve the desired diameter and wall thickness, following precise ASTM standards for quality assurance. With our seamless pipes, you’re getting a piping product that’s crafted with precision and care, ensuring optimal performance.

Play Video about shows-buring-seamless-pipe

What is the Difference between Seamless Pipe and Welded Pipe?

Seamless and welded pipes serve similar purposes but are created differently, each with its unique advantages. Seamless pipes, as the name suggests, have no seams, offering a uniform structure throughout and enhanced corrosion resistance. They are produced either through cold or hot rolling extraction, utilizing advanced manufacturing processes, ensuring a product that can handle higher pressures, making them a favorite in the oil and gas industry. Welded pipes, on the other hand, are crafted from flat metal plates or coils, bent and welded together with precision using welding techniques. This method allows for high precision in terms of diameter and wall thickness. While welded pipes might be more vulnerable to pressure due to their seams, they are often more affordable and can be produced in larger sizes. When choosing between the two, it’s essential to consider the specific needs of your project, including factors such as corrosion resistance and the intricacies of the manufacturing process. With our expertise, we ensure that whether you opt for seamless or welded, you’re getting a product of the highest quality.

Seamless Pipe

Welded Pipe

our clients

Our Advantages

  1. Over 25 years of experience in pipeline production and installation.
  2. Comprehensive inspection equipment.
  3. Independent product serial numbers for traceability.
  4. Advanced production equipment – Seamer high-frequency welding machine from the United States.
  5. Complete qualifications – API 5L/API 5CT/FM/UL fire pipe certification, etc.
  6. Wide range of products – independently developed solar torque tubes, highly favored in the European market.
  7. Customers spread across the globe.
  8. Excellent after-sales service and sense of responsibility.

Application Scenarios

Our steel pipes are engineered to withstand high temperatures, corrosive environments, and varying pressures, ensuring reliability and safety in the complex petrochemical processes. 

Whether it’s transferring crude oil, natural gas, or chemical intermediates, the robustness and versatility of steel pipes make them indispensable components of the plant’s infrastructure, contributing to efficient production and maintenance of stringent safety standards.

Related Products



Our seamless pipes Range in sizes from 1/8 inches to 36 inches, they are produced using high-quality carbon or alloy steel.


ERW Pipe

Our carbon steel EAW pipe with an O.D. ranging from 21.3mm to 660mm and W.T. between 1.0mm to 20mm.



The dimensions of our SSAW steel pipes range typically from 20 inches to 80 inches (406mm to 2032mm) in diameter.



With dimensions ranging from an OD of 406 mm to 1626 mm and a thickness of 6.35 mm to 75 mm, our LSAW pipes cater to a diverse set of requirements.