Your Professional Seamless Steel Pipe Manufacturer
TIANJIN BO YI DA IMPORT AND EXPORT CO.,LTD is a modern production and exporting enterprise with professional experiences in international business.Our Product: galvanized steel, galvalume steel, PPGI, PPGL, hot rolled steel, cold rolled steel, stainless, wire rod, H-beam, steel pipe etc. The company is committed to providing customers with high-quality and reasonable price steel products and strives to create value for customers as its own responsibility.
Why Choose Us
High Quality
We take pride in the craftsmanship of our products and ensure that each one meets our strict standards for quality.
Production Market
Our products are exported to all over the world, including Africa (West Africa, East Africa, South Africa), Southeast Asian countries (Philippines, Vietnam, Singapore, Indonesia), and South American countries, etc. Our products are widely used in construction projects.
Global Shipping
Our company has a strong and professional logistics and distribution system, ready to meet our customers' various needs at any time.
End-to-end Services
☆Pre-Sales service
* Inquiry and consulting support.
* Sample testing support
* View our Factory.
☆After-Sales Service
*Videos or photos will send to customers
*100% Granutee quanlity and quantity.
*Vessel tracking.
Products Specifications
|
Product name |
Galvanized seamless steel pipe |
|
Thickness |
0.3-15mm |
|
Length |
6m, 12m or Customize |
|
Grade |
Q235/Q235B/Q345/Q345B/Q195 |
|
Standard |
AISI JIS ASTM ASME DIN EN GB8162 |
|
Alloy or Not |
Non-Alloy |
|
Zinc Coating |
40-275g/m2 |
|
Applications |
Gas Pipe, OIL PIPE, Structure Pipe |
|
Type |
Seamless Steel Pipe |
Advantages of Seamless Steel Pipe
Greater Strength
Seamless steel pipes are made from solid steel billets, which makes them stronger and more durable than welded pipes. This makes them ideal for use in high-pressure applications.
01
Uniformity
Seamless steel pipes are made to uniform thickness and size, which means that they have consistent strength and performance throughout their entire length. This makes them easier to work with and reduces the likelihood of failure due to weak spots or defects.
02
Smooth Surface
Seamless steel pipes have a smooth surface finish, which reduces friction and resistance to fluid flow. This makes them ideal for use in fluid transport applications, such as in the oil and gas industry.
03
Corrosion Resistance
Seamless steel pipes are often coated with a layer of protective material, such as zinc or epoxy, to prevent corrosion. This makes them ideal for use in corrosive environments, such as offshore drilling rigs.
04
Cost-Effective
Although seamless steel pipes can be more expensive than welded pipes, they offer greater strength and durability, which can lead to longer service life and lower maintenance costs over time. They are also easier to install and require less downtime for maintenance or repairs.
05
Application of Seamless Steel Pipe
Oil and Gas Industry
Seamless steel pipes are commonly used for transporting oil and gas, especially in high-pressure, deep-sea, and cold environment applications. Due to their strength and durability, they provide long-lasting performance in corrosive environments.Seamless pipes are also used in oil drilling equipment, such as drill pipes, tubing, and casing.
Chemical and Refining Industries
Seamless steel pipes are widely used in chemical pipeline systems for transporting aggressive chemicals, including acids, alkalis, and petrochemicals, thanks to their superior resistance to corrosion and high temperatures.
In refineries, seamless steel pipes are used in high-temperature and high-pressure reactors, heat exchangers, and other equipment.
Power Industry
In the power industry, seamless steel pipes are essential for steam pipelines, boilers, and heat exchangers. They must be able to withstand high temperatures and pressure, making seamless pipes an ideal choice.
They are also used in power plant systems, including steam and cooling water circuits.
Mechanical Manufacturing
Seamless steel pipes are used in a variety of mechanical manufacturing applications, such as hydraulic systems, structural parts, bearing sleeves, and machine tool beds, where high strength and wear resistance are required.
Components of vehicles, such as automobiles and motorcycles, often use seamless steel pipes, including the chassis, engine components, and suspension systems.
Construction Industry
In construction, seamless steel pipes are used for load-bearing structures and support frames, providing strong durability and resistance to deformation.
Medical and Food Processing Industries
Stainless steel seamless pipes are used in medical devices, such as vascular stents, infusion tubes, and food processing equipment (like pipelines, refrigeration systems) due to their excellent corrosion resistance and bio-compatibility.
Automotive Industry
In the automotive industry, seamless steel pipes are used in the manufacture of chassis, suspension systems, exhaust pipes, and other critical components, especially where high strength and durability are required.
Aerospace Industry
In aerospace, seamless steel pipes are used in aircraft engines, spacecraft structures, and other essential components that must withstand extreme conditions of pressure, temperature, and mechanical stress.
Manufacturing Process of Seamless Steel Pipe
Choose high-quality steel billets or solid circular bars.
Examine billets for flaws and ensure they meet standards.
Pre-treatment to clean and remove impurities from the surface.
Control heating process to prepare raw materials.
Use a rotary pierce mill to create a hole in the billet.
Use rotating cutting method to achieve the right size and quality.
Gradually reach the required diameter and wall thickness.
Pass the rough top shell through mills to make it longer and thinner.
Use rollers and tension control to narrow the outside width and improve surface.
Shape the pipe to ensure consistent size.
Cool the pipe with water or air to maintain structural and tensile qualities.
Line up the pipe to remove twisting or warping.
Use a straightening machine to make precise adjustments.
Cut the seamless pipe to the desired lengths with saws.
Visual inspection, dimensions, chemical composition analysis, mechanical property testing, ultrasonic testing, hydrostatic test, packaging, labeling, reports, and records.
Use heat treatments like annealing, cooling, and tempering to improve mechanical features.
Pipes undergo cleaning, passivation, and finishing for the desired finish.
Check pipes for quality compliance.
Pack pipes carefully for safe transportation.
Types of Seamless Steel Pipe
Hot rolled seamless steel pipe
Hot-rolled seamless steel pipe is a seamless steel pipe made by heating the blank to a sufficient temperature through a hot-rolling process, and then passing it through multiple continuous passes. Its advantages are high production efficiency and smooth surface. It is usually used to transport high-temperature and high-pressure gas or liquid.
Cold drawn seamless steel pipe
Cold drawn seamless steel pipe is processed from steel pipe blank into seamless steel pipe through cold drawing process. Compared with hot-rolled seamless steel pipes, cold-drawn seamless steel pipes have higher surface smoothness and higher dimensional accuracy, and are suitable for manufacturing various precision mechanical parts and refrigeration equipment.
Precision seamless steel pipe
Precision seamless steel pipes are produced through cold drawing processes, which require higher dimensional accuracy and surface smoothness. They are used to manufacture high-precision equipment such as hydraulic systems, aerospace vehicles, and nuclear power plants.
Alloy seamless steel pipe
Alloy seamless steel pipe is a steel pipe with high temperature, high pressure, high strength and high corrosion resistance. It is widely used in petrochemical, electric power, nuclear industry and other fields. According to their alloy composition, they can be divided into different types, such as chromium-molybdenum alloy steel pipes, nickel alloy steel pipes, etc.
Stainless steel seamless steel pipe
Stainless steel seamless pipe is a steel pipe with strong corrosion resistance and is widely used in petrochemical, pharmaceutical, food and other fields. According to their different compositions and uses, stainless steel seamless steel pipes can be divided into different varieties, such as austenitic stainless steel pipes, ferritic stainless steel pipes, etc.
Packaging and Shipping
FAQ
As one of the leading seamless steel pipe manufacturers and suppliers in China, we warmly welcome you to buy high quality seamless steel pipe in stock here and get quotation from our factory. Contact us for more details.