Custom Fire Fighting Pipes,Seamless and Welded Steel Pipes Manufacturer Since 1991.
Seamless Steel Pipe Manufacturer
Seamless Steel Pipe is a hollow, circular pipe with no seams, offering high strength, uniformity, and excellent pressure resistance. At Baolai Fortune, we manufacture seamless steel pipes using high-quality carbon steel, alloy steel, and stainless steel materials. These pipes are produced through advanced processes such as hot rolling, cold rolling, or cold drawing to ensure consistent quality and dimensional precision.
Our seamless steel tube range supports a wide variety of applications, including oil and gas transmission, fire protection systems, natural gas lines, water supply and drainage, boiler and heat exchange systems, and structural construction. Each application may require pipes of different specifications, and we meet those demands with full-size options—from 1/8″ to 50″ outer diameter and wall thicknesses from SCH10 to SCHXXS.
To guarantee performance and safety, Baolai Steel supply 100% test by our QC. Whether you need a reliable seamless steel tube for industrial use or a certified Seamless Steel Pipe for pipeline infrastructure, our solutions deliver strength, durability, and compliance across the board.
Product Description
Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes.
Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.
Production Process
Cold-Drawing
Cold rolling, done often at room temperature, has the added effect of work hardening and strengthening the material thus further improving the material’s mechanical properties. It also improves the surface finish and holds tighter tolerances. However, room temperature steel is less malleable than hot steel, so cold rolling cannot reduce the thickness of a work piece as much as hot rolling in a single pass. Commonly cold-rolled products often include similar hot rolled products like sheets and bars, but are usually smaller.
Hot-Rolling
Hot rolling is typically not as costly or as expensive as cold rolling or cold drawing, as the steel is more malleable at a higher temperature. There is also one less step when producing the steel, which cuts back on the operating costs of producing the steel. The finish of the steel will not be as smooth or clean as cold rolled or drawn steel, and mechanical properties of the steel are typically not as good as steel in its cold drawn form. This often is not important for steel products that are produced in high quantity and do not need a clean external finish.
Seamless Steel Pipe Services we offer
Cutting
Water jet technology, also known as water jet and water cutting technology, is a real cold cutting. speed jet water cutting.
Beveling
We can apply any type of Bevel to any degree desired. Beveling can be applied to the surface of pipes of any size or diameter.
Threaded
Pipe thread is a thread located on the pipe wall for connection, mainly used for the sealing connection of water, gas, oil and other pipelines. We offer NPT* and BSPT* pipe threads.
FAQ
1. What international standards do Baolai’s seamless carbon steel pipes comply with?
▼
As a leading carbon steel seamless pipe manufacturer, Baolai Steel produces pipes strictly according to international standards, including ASTM A106 Grade B (for high-temperature service), ASTM A53, and API 5L (for oil and gas pipelines). For European and Middle Eastern markets, we also supply pipes meeting EN 10210 and EN 10216 specifications. Each shipment is accompanied by a Mill Test Certificate (MTC) according to EN 10204 3.1 to ensure full traceability and chemical/mechanical compliance.
2. Do you supply seamless boiler tubes for high-pressure industrial applications?
▼
Yes. As specialized seamless boiler tubes manufacturers, we offer high-quality tubes designed for boilers, heat exchangers, and superheaters. Our range includes ASTM A179 (cold-drawn low-carbon steel) and ASTM A192 (high-pressure service) tubes. These products undergo rigorous testing, including hydrostatic tests, flattening tests, and flaring tests, ensuring they withstand the extreme temperatures and pressures common in power plants and petrochemical industries across Southeast Asia and the Middle East.
3. What is the difference between your hot-rolled and cold-rolled seamless steel pipes?
▼
Hot-rolled seamless steel pipe is generally suitable for larger sizes, heavier walls and applications where cost efficiency and broad size availability are important. Cold-rolled or cold-drawn pipe is preferred when tighter dimensional tolerances, thinner walls and a smoother surface finish are required. Buyers should choose the manufacturing route according to size, dimensional tolerance, surface requirements and the applicable pipe standard.
4. What documents are available for seamless steel pipe orders?
▼
Documentation can be provided according to the applicable standard and purchase requirements. Typical order documents may include a Mill Test Certificate (MTC), dimensional and inspection records, hydrostatic test results where required, packing information and other project-specific quality documents agreed before production.
5. What are the advantages of sourcing wholesale seamless steel pipes from Baolai Steel?
▼
For bulk seamless steel pipe procurement, buyers need consistency across material, dimensions, testing and documentation as well as competitive supply terms. Baolai Steel supports project and wholesale orders with dimensional and quality inspection, MTC documentation, processing options and export packaging. Buyers can provide the required standard, grade, outside diameter, wall thickness, length and quantity for quotation and delivery planning.
