Quality Control
We ensure that every batch of steel coils from the steel plant to the processing plant is processed according to the customer's needs, and each batch of steel coils and plates corresponds to the corresponding quality assurance certificate and furnace batch number.
Rich Experience
Our company has rich import and export experience and a professional team, which can provide products with quality assurance, focus on maintaining and developing customer relationships, and improve customer satisfaction.
Global Shipping
The product sales cover Chinese Mainland, Southeast Asia, the Middle East, the Americas, Europe and other regions. The quality assurance of heavy infrastructure projects for the supply of products such as plates, profiles and pipes is very good, and the customer feedback is very good.
One-stop Solution
Our company uses advanced information technology to provide customers with high-quality services throughout the entire supply chain, including technical consulting, product ordering, production progress inquiry, warehousing and logistics, financial settlement, and after-sales service.
What Is Steel Pipe
Steel pipes are made with metal alloys of iron and other metal like aluminum/ manganese etc. and has greater strength and durability than iron pipes. They are either seamless or welded along the length of the pipe and galvanized by coating it with a layer of zinc in a hot zinc bath or by an electroplating process.
Common Applications of Steel Pipe
Steel has many uses throughout a variety of industries, and one of the most common and wide-ranging types is steel pipe, or steel pipe.
It's highly resistant to corrosion and other damage, and it's much stronger than similarly sized plastic tubes. Let's take a look at a few of the most common applications of steel pipe.
Steel pipe is used throughout industrial applications, particularly for transportation of water, gasses and liquid wastes. Steel tubes are a common component of industrial machines, used in conveyor belts, hydraulic lifts, mills and many other machines.
Both for equipment and patient assistance applications, steel pipe is vital in the medical industry. Medical steel needs to be durable and high quality, for the best patient care possible. Many surgical tools use steel pipe, and many implants must be tube-shaped to match bones. Stethoscopes are made from particular types of steel pipe in many cases, and you'll likely see steel pipe in beds, wheelchairs, iv stands and several other areas.
These applications require high resistance to extreme conditions, often for fluid transport. These structures need much more strength than they would on earth once they reach outer space. Steel pipe might be present in everything from landing gear and motor shafts to exhaust stacks. The military will also often use steel pipe in vehicles and weapons components.
Everything from cars and trucks to planes and trains use steel pipe, most commonly in their engines and fuel lines. Gas, oil, steam and smoke travel via steel tubes more often than any other type. Tubing is used for exhaust pipes, muffler components, chemical transportation and even high-strength items like roll cages.
● Sturdy and lightweight material
During manufacturing steel pipes, the experts reduce the dead loads. Therefore, the material becomes sturdy and lightweight, which reduces their overall cost. Also, being lightweight does not mean the quality of pipes compromises the integrity of the building.
● Affordable option
Steel pipes are available in any part of our world. That's why this material is not expensive. You should purchase extra cubic volume while utilizing the timber as a manufacturer. As a result, you may have wastage up to 40%, not more than that.
You don't need to hire extra human resources and time, reducing the manufacturing cost. One of the most exciting parts is there is no need to throw away the waste product.
● Safety
Steel pipes are required zero to little maintenance. It is especially true when you want to pre-treat the pipes with metalization, galvanizing or other types of coating. It is also resistant to pests and fire.
● Steel pipes for construction are famous for their durability
Steel pipes are primarily used in the construction industry because it is durable. Steel can withstand natural phenomena such as earthquakes, strong winds and heavy snow.
After constructing any building or bridge with steel pipes or steel product, the constructed item become robust and highly durable compared to other elements. Steel is an excellent alternative to the wooden product because you don't have to worry about wet wood and rotting.
● Resistance power against fire
Almost every construction experts prefers steel over wood to construct something because it has resistance power against fire. Wood can increase the risk of fire accidents, but steel reduces the scope and is also coated with a flame-retardant element, enhancing its durability.
● Eco-friendly material
Due to global warming and various other reasons, our beloved earth has faced numerous problems impacting humans and other species. Using eco-friendly product is one of the most effective ways to go green. Recycling steel saves energy costs for about 18 million households which are very impactful.
Why Should I Know Steel Grades for Pipes
● ASTM and ASME
One of the standard gradings you'll see on pipes all over the world comes from the American Society of Testing and Methods (ASTM) and the American Society of Mechanical Engineers (ASME). Their pipe specifications and grading for steel are quite similar.
The ASTM of A-106 B — which designates a ferrous material, specifically a seamless carbon steel pipe for high-temperature applications — would have a grade of SA 106 B from the ASME specifications.
Both ASTM and ASME use grades of A, B, and C when designating pipes. These grades indicate certain properties of steel, based on their chemical makeup and resulting mechanical properties.
The difference between the ASTM and ASME grading systems lies with pipes for pressure systems. These require additional quality tests to comply with ASME standards, so they're more specific in grading.
Pipe sizing under these two systems is specified using a chart (ANSI/ASME B36.10 and API5L) that lists outside diameter and wall thickness. To list the outside diameter, they usually state the nominal pipe size (NPS), which is that actual dimension in inches. For wall thickness, they state either the actual thickness or the schedule in inches.
AISI and SAE
The American Iron and Steel Institute (AISI) and the Society of Automotive Engineers (SAE) also have their own grading system to classify steel pipes for use. The difference between the ASTM/ASME and AISI/SAE systems is that the latter only describes the composition of the steel pipe. It does not denote manufacturing, testing, or treating information.
This system only uses numbers. Take 1020 steel pipes, for example. The first number shows it is plain carbon steel, while the second number indicates no added alloys, and the last two numbers state it has 20% carbon content.
API
The American Petroleum system has a grading system for standards in transporting, storing, safety, and other concerns regarding gas, oil, and water — which include steel pipes. However, these only apply to pipes with applications in the gas and oil industry.
API 5L is the standard that all steel pipes in this industry should be rated by. As it is only a standard, additional pipe grading and specifications may be needed to ensure your steel pipe fits your application.
Key Factors to Consider When Choosing Steel Pipes
Application Requirements
The primary factor in choosing the right steel pipe is its application. Understanding the specific requirements of your project, such as pressure, temperature, and environmental conditions, will guide your selection process.
Material and Grade
Steel pipes come in various grades, each designed to meet different mechanical and chemical properties. S/A53 steel is popular for industrial piping due to its weldability and corrosion resistance. Stainless steel, with its high corrosion resistance and durability, is preferred in the food and beverage industry.
Strength and Durability
Seamless pipes generally offer superior strength and durability, making them suitable for high-stress environments. Welded pipes, while not as strong, are adequate for many standard uses and are easier to inspect for quality assurance. Discover our detailed guide on welded vs. seamless steel pipes.
Performance in Extreme Conditions
If your project involves extreme temperatures or high-pressure scenarios, seamless pipes are often the better choice due to their uniform structure. Welded pipes are more suitable for less demanding environments.
What Is the Most Common Type of Steel Pipe
Steel pipes have countless applications, but their basic purpose is to channel liquid or gas from one place to the next. They are used in both large-scale transportation systems buried beneath cities and smaller piping systems used in residential and commercial buildings. They are also used in industrial manufacturing plants and construction sites. Indeed, there is virtually no end to steel pipe applications, and this impressive versatility is all thanks to the strength and flexibility of steel as a structural material.
Carbon steel
Carbon steel is the most common type of steel used in pipes. Its chemical makeup has relatively low amounts of alloying materials, which makes it easy to fabricate with a beam machine and helps keep costs down. Generally used in the automotive, marine, and oil and gas industries, carbon steel pipe offers impressive strength under loading.
Alloyed steel
Adding alloys, such as copper, nickel, chromium, and manganese, to steel improves its performance. Alloyed steel pipe is ideal for high loadings and unstable conditions, making it a popular option for oil and gas, petro-chemical, and refining operations.
Stainless steel
Stainless steel is a material that has been enhanced with a chromium alloy to resist corrosion. Stainless steel pipe is universally used, therefore, in the marine industry and by companies that produce medicine, purify drinking water, and have similar applications where a corrosion-free piping system is required.
Galvanized steel
Similar to stainless steel, galvanized steel is alloyed with a corrosion-resistant metal, this time zinc. Though zinc helps galvanized steel pipe resist corrosion, its performance isn't as strong as stainless steel, and the pipe may, in fact, corrode over time. Plus, its lifespan is only around 50 years. Though once popular in residential plumbing systems, galvanized steel pipe is primarily used for industrial piping systems today.
How Is Steel Pipe Specifiedription
Specifications can be broken down into three main categories:
Pipe size is quoted as a "Nominal Pipe Size" or NPS. The origin of the NPS numbers for smaller pipes (< NPS 12) is different to the origin for larger diameter pipes. However, all pipes of a specific NPS number have the same external or outer diameter (OD). The internal diameter will vary depending on the wall thickness of the metal. The reason for this is so that the same structural supports can be used for all piping of a specific NPS number regardless of the wall thickness.
Steel pipe schedules are a way to describe the wall thickness of the pipe. This is a critical parameter as it is directly related to the strength of the pipe and the suitability for specific applications. A pipe schedule is a dimensionless number and is calculated based on the design formula for wall thickness, given the design pressure and allowable stress.
Examples of schedule numbers are as follows: 5, 5S, 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, STD, XS, and XXS—with the most common being schedules 40 and 80. As the schedule number increases, the wall thickness of the pipe increases. The schedule number of a pipe therefore defines the internal diameter, as the OD is fixed by the NPS number.
The weight of a pipe can be calculated based on the NPS, which defines the outer diameter, and the schedule, which defines the wall thickness. The formula uses the theoretical weight of steel of 40.8 pounds per square foot per 1 inch of thickness to determine the constant.
W = 10.69 x t (OD – t)
Where:
W = Weight (in pounds per foot)
OD = Outer diameter
T = Thickness
Our Factory
Suzhou Leyihua Electromechanical Co., Ltd
Is located at 126 Hexing South Road, Jinfeng Town, Zhangjiagang City, Suzhou City. With a registered capital of 5 million yuan, the company mainly supplies well-known steel mills such as Yonggang, Zhongtian, Nangang, Xinyu, Xianggang, Xingcheng, Shagang, Rizhao, Masteel, Tanggang, etc., including hot-rolled coils, medium plates, container plates, I-beams, angle steels, channel steels, H-beams, galvanized pipes, welded pipes, square pipes, threaded steel, stainless steel and other spot products. Our company uses advanced information technology to provide customers with high-quality services throughout the entire supply chain, including technical consulting, product ordering, production progress inquiry, warehousing and logistics, financial settlement, and after-sales service.
