Why Use Welded Pipe

Structural welded pipe (tubing) can be used for a wide variety of mechanical applications. It may be used either statically or dynamically. Its close tolerances, good finish, and dense structure make it ideal for parts such as structural support and parts, frames, racks, trailer beds and trailer components, structural components and supports for buildings, bridges, and highways, conveyors, machine parts, ornamental usages and a wide range of applications in industrial, construction, automotive, appliance and agricultural industries. 

Welded pipes are generally more cost effective than the equivalent seamless alternative. They are significantly more available both from distributor and mill stocks and from a mill production lead time perspective. With longer lead times seamless tubes can be exposed to unknown alloying price extras that can fluctuate substantially, hence it can be difficult to plan and predict the true costs for the material. Therefore in addition to faster delivery times for Erw tubes, there is the added advantage of lower economical risk. Erw welded steel tubes generally have better surface quality as compared with manufacturing seamless tubes. Seamless tubes are generally made in multiple steps starting with hot extrusion to form the tube hollows from billets.

Do you need welded pipe? Check out our welded offers, then contact us for a quote. We’d love to discuss the needs of your next project.

United States hot dipped galvanized and Al-Zn coil prices remain stable

United States domestic hot-dip galvanized and Al-Zn coil spot prices remained stable, hot dip

galvanized prices were at US$904~926/ton or US$820~840/short ton, ex-factory prices in the Midwest; Al-Zn coil base prices were at US$ 893~915/ton or US$810~830/short ton.

Market participants said that United States hot dip galvanized coil market remained strong, the delivery time still needs about 6-8 weeks. Although the summer off-season, but prices are still strong. So there's no buyers to stock up at current inventory levels.

Benefits of Seamless Steel Commercial Pipe

The seamless steel pipe manufacturing process starts with a solid, round steel billet. This billet is then heated to great temperatures and stretched and pulled over a form until it takes the shape of a hollow tube. As steel pipe suppliers will tell you, there are three great advantages to making a pipe in this way.

Increased Pressure Ratings

The greatest advantage of seamless steel pipes is their increased ability to withstand pressure. The weakest point in a welded steel pipe is the welded seam. But because a seamless steel pipe has not been welded, it doesn’t have that seam, making it equally strong around the entire circumference of the pipe.

It is also much easier to determine pressure calculations without being required to take weld quality into consideration.

Although seamless pipe can sometimes be more expensive than welded pipe, this increased ability to withstand pressure allows you to use pipes that are thinner and lighter, which can help cut down on expenses.

Uniformity of Shape

Because welded seam pipe is wrapped around another form before it is welded, and because welding adds heat, stress and other extraneous variables to the forming process, it can never be as round as seamless steel pipe.

Seamless steel pipe is a continuous extrusion of the alloy, meaning that it will have a round cross section that you can count on, which is helpful when you’re installing pipes or adding fittings.

Strength Under Loads

Seamless steel pipe can sometimes be more expensive than other forms of steel pipe, but it’s also more reliable.

This is because it has greater strength under loading. Empty pipe must always support its own weight, but when a pipe is filled with material–or under load–it must also support that weight as well. Pipe failures and leaks in welded pipes usually occur at the welded seam. But because seamless pipe doesn’t have that seam, it isn’t subject to those failures.

These benefits make seamless steel pipes the preferred material in an array of commercial pipe applications, including ship building, pipelines, oil rigs, oil field equipment, pressure vessels, machinery parts and offshore rigs. An additional benefit of seamless pipes is that they perform well in harsh conditions, which means that they can be used in extremely cold or hot environments.

If you’re considering seamless steel pipes for your next commercial pipe project, please get in touch with us and request a quote. As a leading international steel pipe supplier, we can provide you with the products you need and quickly ship your order to anywhere in the world.

ASTM A53 ERW pipes

We are manufacturer of ASTM A53 ERW pipes and supply high quality ASTM A53 ERW pipes in both large and small quantities worldwide &

offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

ASTM A53 ERW Pipes Specification

Grade:

A53,API 5L GR.B,ST35.8,ST37,ST42,ST52,E235,E355,S235JRH,S275JR, S355J2H,S355JR

Type: Electric Resistance Welded(ERW)

Length: 6M-13M

Outer Diameter: 1/2”(21.3mm) to 24”(610mm)

Specification: 21.3mm-610mm*2mm-30mm

Technique: Welded

Thickness: SCH10(2mm) to XXS(30mm)

Surface Treatment: Normally bare or black vanish, FBE/2PE/3PE Coated.

If need, all the pipes can be covered in waterproof wrapping.

Materials and Manufacture

The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric furnace, or basic-oxygen. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.

Applications: heat exchangers, condensers, heat transfer equipment and similar pipes.

Note:

DN — Nominal Diameter

NPS —Nominal Pipe Size

The Difference between ERW Steel Pipe and Seamless Pipe

Nowadays, with quick construction of society and rapid development of technology, more and more different kinds of steel pipes are created, such as welded steel pipe, seamless steel pipe, ERW steel pipe and so on, and more and more steel pipes are needed. In the competitive market of steel pipe, ERW steel pipe, seamless pipe and welded steel pipe are well sold thanks to their specific characteristics.

There are a few aspects of differences between ERW steel pipe and seamless steelpipe. ERW pipe, which is short for electric resistance welding, is used in delivery of liquid, such as fuel, gas and so on, regardless the requirement of pressure, which plays an important role in the conveying tube all over the world, while seamless pipe is a kind of steel pipe shaping square and rectangle and having no seam around with hollow cross-sections, which is used in conveying liquid but also making structural members and machine parts, due to its surprisingly high anti-bending and anti-torque strength and impossibly lightness. All in all, ERW pipe and seamless steel pipe is quite different in use.

What's more, the biggest difference between ERW pipe and seamless steel pipe is that ERW pipe has welding line, which is the same as welded steel pipe, but seamless black steel pipe doesn't have, either does the welded steel pipe. Furthermore, the welding line of ERW pipe is the key to the quality of ERW steel pipe. The more unrecognizable the welding line of ERW pipe is, the higher quality ERW pipe has. As an old saying goes ‘hard work pays off', with scientists' continuous hard study, a huge success in eliminating the welding line of ERW pipe has been achieved. There are two ways to eliminate the welding line: geometric seamlessly and physical seamlessly. Geometric seamlessly is to eliminate the burr both inside and outside while physical seamlessly is to take steps to make base metal and metallographic structure uniform and consistent, which seems more complicate to achieve, however, a ERW pipe without a welding line can be successfully attained through which. Compared with processing technique of ERW pipe, the processing technique of seamless steel pipe is much simpler. There are two entirely different types of processing technique: cold-drawing and hot rolling. Compared with hot rolling, the technological process of cold-drawing is more complicated. Moreover, in the appearance, cold-drawn seamless stainless steel pipe is shorter than hot-rolled one and the wall thickness of cold-drawn seamless stainless steel pipe is generally smaller than the wall thickness of hot-rolled one. What's more, the technological process of hot rolling needs high temperature which reduces the resistance of deformation so that a big deflection is achieved. Generally speaking, the technological processing of ERW pipe and seamless steel pipe are quite different, due to the different appearance.

In general, although ERW pipe and seamless steel pipe both play an important role as well the welded steel pipe do in the construction of society, ERW pipe and seamless API steel pipe has different use and different making progress thanks to their different appearance. Scientists have always been paying a lot to improve their property, which is aimed to make them more multifunctional and to reduce the cost of processing. Maybe one day, ERW pipe and seamless steel pipe will have little differences.

For more information, please visit http://www.shinestar-steel.com

Advantages and Applications of Carbon Steel Pipe

Carbon steel pipe is one of the most popular piping materials in the world. And for good reason: it has many advantageous characteristics.

Let’s take a look at some of those characteristics and the applications that they make carbon pipe particularly well suited for.

Shock Resistance

Carbon pipes have a tremendous ability to withstand shocks and vibrations. While other materials may succumb in such environments, carbon pipes are able to maintain their integrity and performance in even the most jarring conditions.

This makes carbon pipes and welded carbon pipes particularly useful in the transportation industry. Pipes laid under roadways can experience extreme shocks and vibrations from the heavy traffic above. Carbon pipe, with its ability to withstand shock, is a great choice for such situations.

Tensile Strength

Carbon steel can endure very high pressures. This gives carbon pipes an excellent carrying capacity, meaning that, pound for pound, they can carry more than most pipes comprised of other materials.

Its high tensile strength not only makes carbon pipes a great solution for high-pressure applications, but also for projects where your budget may be tighter than usual. Their high carrying capacity means that thinner carbon pipes can be used to get the same job done that only thicker pipes of other materials could handle. This, in turn, means your material costs can be lower.

Safe and Easy to Work With

Many piping materials must be treated with preservatives, glues or pesticides, which means they must be handled with caution. However, carbon pipes and welded carbon pipes don’t need these treatments.

Not only does this make them safer to work with, it makes them better suited for use in home projects–you certainly don’t want to introduce dangerous chemicals into your house. Furthermore, carbon pipe can also withstand disasters like tornados and hurricanes better than some other pipes, which also makes them a good choice for home projects.

 As you can see, carbon pipe has a number of advantages that make it well-suited for a variety of projects. Contact us today so we can discuss how it might work well for your next project.

The Advantages to use Galvanized Pipe

Galvanized pipe is pipe that has been coated with a layer of zinc. This coating protects the pipe from corrosion and rust, leading to increased longevity and enhanced reliability.

The zinc is often applied via a hot-dipping process, literally lowering the intended material—whether it is steel, aluminum or another metal—into hot zinc. This coating protects the pipe by corroding first when the pipe is out in the field, allowing the metal underneath it to stay intact and usable for a longer period of time.

Here are a handful of great reasons why you should choose galvanized pipes:

Inexpensive Protection

Galvanization is often less expensive than other ways of protecting metal from corrosion. This is due to the fact that other methods often require intensive labor. Labor costs have risen steadily, which means the costs of these methods have risen as well.

ASTM Galvanized Pipe Standardization

The ASTM has standards for many different types of galvanized pipes. This means that when you buy an ASTM galvanized pipe, you can count on its quality and accurately predict its performance and lifespan.

Fewer Repairs

Because galvanized pipes are resistant to corrosion, you don’t need to repair them as often as other types of pipes. This saves time and money, especially if your pipes are located in areas that are difficult to reach.

Simple To Inspect

You don’t need sophisticated equipment to inspect galvanized pipes. Rather, the integrity of their coatings can be checked by the human eye, and their thickness can be measured with straightforward processes that won’t damage the pipes.

All-Over Protection

Zinc coatings provide cathodic or sacrificial protection, meaning that even if small parts of the zinc layer have been scratched or damaged, the exposed metal underneath will still be protected. Furthermore, galvanization protects the parts of your pipe that are usually problematic—the corners, recesses and nooks. Other processes of protecting pipes don’t offer this all-over protection.

If you have any questions or are considering galvanized pipe for your next project, please contact us. We’ll get back to you quickly with the information or quote you need.

Advantages and Application of ERW Steel Pipe

ERW pipes definition:

Electric resistance welded=ERW

ERW pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc. ERW pipes and tube are available in various qualities, wall thicknesses, and diameters of the finished ERW pipes. 

Advantages

As only the edges are heated, the tube possesses dean accurate surface.

Applications:

1. Electric resistance welding can make tubes in sizes up tp 0.4 metre diameter. 

2. Tubes can also be made from steels having around 0.3% carbon.

Major factor is economy and especially in low pressure application.

ERW Pipes application:

Water pipelines

Agriculture & irrigation ( Water mains, sewerage systems, industrial water lines, plant piping, deep tube-wells & casing ERW pipes)

Gas pipe lines (Pipe lines for natural gas)

LPG and other non-toxic gas

The SW is meant for shallow water applications in a canal, natural stream, culvert, or ERW pipes

Four Things to Know about Carbon Steel Pipe

The first thing to consider about carbon steel pipe is simply what it is. Carbon steel pipe is pipe comprised of carbon steel. But what is carbon steel? Here’s how the American Iron and Steel Institute defines it:

Steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, niobium, molybdenum, nickel, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0.40 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60.

Simply, carbon steel is steel in which the main alloying component is carbon. Interestingly, most of the world’s steel falls into this category.

What are the different types of carbon steel pipe?

Carbon steel is classified according to how much carbon has been mixed with the base element, iron.

Ultra-high carbon steel is comprised of between 1% and 2% carbon.

High carbon steel is .60%-.99%

Medium carbon steel is .30%-.59%

Low carbon steel is .16%-.29%

Mild carbon steel is .05%-.15%

As a general rule, as the carbon percentage in carbon pipes increases, the steel becomes stronger and harder. However, its ductility decreases.

What are some advantages of carbon steel pipes?

Carbon steel pipes have many benefits. Here are a few:

Shock resistance. Carbon steel pipes can withstand great shocks and vibrations.

Safety. Some materials need to be treated with preservatives, glues or pesticides in order to protect them. But this also can make them hazardous to handle. Carbon pipes don’t require such treatments, making them safer to work with.

Tensile strength. Carbon steel can endure tremendous pressures, meaning that thinner carbon steel pipes can carry the same capacities as thicker pipes made of other materials. This, in turn, makes carbon pipes more cost effective.

What are some of the applications?

A few of the many applications for carbon pipes include:

Transportation. Carbon steel’s resistance to shock makes it suitable for water mains and pipes placed beneath roadways that experience the jarring vibrations of heavy traffic.

Homes. Because carbon steel doesn’t need to be treated with chemicals or pesticides, carbon steel pipes are safe to be used in homes. Furthermore, carbon steel is resistant to fire and stands up well in hurricanes, tornados and lightning.