| After-sales Service: | Yes |
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| Warranty: | Yes |
| Type: | Seamless |
| Technique: | Hot Rolled |
| Material: | Stainless Steel |
| Surface Treatment: | Polished |
| Samples: |
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| Customization: |
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Suppliers with verified business licenses
Audited Supplier 304 316 316L Round Welded Seamless Stainless Steel Pipe
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Standard |
API A106 GR.B A53 Gr.B seamless steel pipe / ASTM A106 Gr.B A53 Gr.B steel tube AP175-79, DIN2I5L , ASTM A106 Gr.B, ASTM A53 Gr.B, ASTM A179/A192/A213/A210 /370 WP91, WP11,WP22. DIN17440, DIN2448,JISG3452-54. |
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Material |
API5L,Gr.A&B, X42, X46, X52, X56, X60, X65, X70, X80, ASTM A53Gr.A&B,ASTM A106 Gr.A&B, ASTM A135, ASTM A252, ASTM A500, DIN1626, ISO559, ISO3183.1/2, KS4602, GB/T911.1/2,SY/T5037, SY/T5040 STP410,STP42. |
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Certificates |
API5L ISO 9001:2008 TUV SGS BV etc |
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Outside Diameter |
1/2'--24' |
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10mm-910mm |
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Thickness |
SCH5S, SCH10S, SCH20S,SCH20, SCH30,STD, SCH40, SCH60, SCH80, SCH100, SCH140, SCH160,XS, |
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1.65mm-59.54mm |
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Length |
5.8m 6m Fixed, 12m Fixed, 2-12m Random. |
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Technic |
1/2'--6': hot piercing processing technic |
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6'--24' : hot extrusion processing technic |
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Surface Treatment |
Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation . |
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Packing |
Bundles or In bulk. bundled pipes with two slings at the both end for easy loading and discharging, |
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End |
Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket. |
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Usage /Application |
Oil pipe line, Drill pipe, Hydraulic pipe, Gas pipe, Fluid pipe, Boiler pipe,Conduit pipe, Scaffolding pipe pharmaceutical and ship building etc. |
Stainless steel, since its development more than a hundred years ago, has become one of the world's most popular and versatile materials, and is now indispensible in a variety of industries. This includes a number of uses specifically for stainless steel pipes, which benefit from the metal's many positive properties.
While steel had been around for centuries, it was vulnerable to corrosion and had other drawbacks that led scientists to look for alternative alloys that could work better in harsh conditions. It had been recognized in the early 1800's that an iron-chromium combination offered superior rust resistance, but it took another century before they finally zeroed in on the right formula.
Finally, in 1912, Harry Brearley of Brown-Firth research laboratory discovered a martensitic stainless steel alloy. They labeled the new material Staybrite, and beginning with the entrance canopy for the Savoy Hotel in London, stainless steel would quickly go on to revolutionize a number of industries.
By definition, stainless steel is an iron alloy that contains a minimum of 10.5% chromium. There is a tremendous variety in the types of alloys available on the market, and they each differ in their exact chemical makeup. Alloying elements such as nickel, molybdenum, titanium, carbon, nitrogen, and copper can boost the strength, formability, and other properties of stainless steel.
To qualify as a stainless steel, it must meet guidelines for corrosion resistance in a specific environment. This resistance arises from the metal's chromium oxide outer layer. This microscopic surface film is referred to as a passivation layer because it naturally reacts with oxygen found in the surrounding air and prevents any further corrosion. Furthermore, the layer is able to repair itself if it receives any damage such as scratches or nicks.
Obviously, the primary attribute of stainless steel is its corrosion resistance. Different alloys offer different levels of resistance. For example, 304 stainless steel, probably the world's most popular stainless steel alloy, offers an all around excellent level of resistance to corrosion. However, when it comes to a marine environment, 304 is not well suited, as it is particularly vulnerable to chloride exposure, which is definitely present in seawater. Instead, an application that will be in marine environments should probably turn to an alloy like 316, which has the added benefit of 2 percent molybdenum.
Stainless steel offers a number of other benefits. Compared with regular steel, stainless steel alloys offer greater cryogenic toughness, a higher work hardening rate, increased strength and hardness, greater ductility, a more attractive appearance, and lowered maintenance costs. With all that going for it, it's no wonder that stainless steel is so popular in such a wide variety of industries, including piping.
Because each alloy behaves differently, it's important to be able to distinguish between them. Stainless steel alloys are divided into five different families, each characterized by their own specific properties. The five families are austenitic, ferritic, martensitic, duplex, and precipitation hardening. Contact us to learn more about the different families of stainless steel and which might be right for you.
The benefits of a corrosion resistant metal when it comes to pipes should be abundantly clear. That's why stainless steel is a common choice for piping applications. Because pipes and tubes come in a wide variety of shapes and sizes, it can be difficult to distinguish between them. For this reason, we generally classify pipes based on their functions.
Stainless steel grade 304 is among the most common alloys used for pipes. This is because of its all around corrosion resistance and other benefits. 304 also offers strong chemical resistance, an added bonus for materials exposed to high amounts of water, especially in industrial settings.
However, when you'll be handling temperatures above 800 degrees Fahrenheit, 304 will not be suitable, as it becomes susceptible to carbide precipitation. In such cases, stainless steel 304L will be more appropriate.
One specific piping application is known as stainless steel pressure pipe. This grade of stainless steel is made up of solid chromium, or alternatively, a chromium-nickel mixture. The appropriate alloys for this type of pipe generally come from the ferritic and austenitic families. Applications include seamless pipe, welded pipe, electric fusion welded pipe, and large diameter welded pipe. This type of pipe can be useful for corrosive or high-temperature applications, as well as high-pressure environments.
Another popular application for stainless steel piping is in sanitary tubing. For example, sanitation is a prime consideration in the food and beverage and medical device industries. Stainless steel, in addition to its corrosion resistance, is celebrated because it is easy to clean and doesn't tarnish. The alloy ASTMA270 is a popular choice for sanitary piping.
Some applications for stainless steel pipes are in high performance industries such as aerospace and engineering. Alloys that are chromium and nickel based offer a high degree of heat resistance, an important consideration for aircraft. Stainless steel aircraft tubing also needs to be strong, and able to be work-hardened and welded.
We offer a wide variety of stainless steel tubing, including the following alloys: 304, 304L, 316, and 316L. Our stainless steel pipes are commonly found in construction applications. Because of its ductility, it can easily be fitted into walls without requiring any heat treatment. We have found that the average lifespan for steel pipes in plumbing is close to fifty years.
Our certificates
Packing details:
1.Black varnish painted or oil painted anti-corrosion oil ,2PE, 3PE on the surface
2.Plain,squire cut or bevelled end by caps
3.In hexagon or triangle bundle with steel strips
4. Marking: As per customer's requirment
Established in 1998, Runfei Steel Group has developed into a large-scaled enterprise, located in the city of Tianjin, which is the largest artificial harbor in north China. With convenient transportation advantage of Tianjin, intellectual marketing network, powerful system of storage, processing and distribution, and good reputation, Runfei has successfully set up a win-win platform between mills and clients.
Runfei started its oversea trading since 2004 when it obtained the import and export license of proprietary trading, providing the international standard processing and distribution service for customers all over the world.
The headquarter of Runfei Steel Group is located in the CBD of Tianjin economical development region - Airport Economic Area.With the continuous expanding of business, Runfei had established Tianjin Runfei Trade Co., Ltd, Runfei (HK) Co., Limited, Tianjin Runfang Steel Processing Co., Ltd, andTianjin Runfei Steel Processing Co., Ltd. Runfei now owns one processing center for hot rolled steel and the other for cold rolled steel, both are located in Tianjin TEDA Industry Area, taking up over 113,220 square meters. The storage capacity of Runfei is 70,000 metric tons and the annual comprehensive processing capacity comes to 1 million metric tons.
Our goal is to become the comprehensive service center combined with proccessing, assorting and storage. Our mission is to be the pioneer of cost solution and service concept in steel industry chain.
Steel pipes are long, hollow tubes that are used mainly to convey products from one location to another. They are produced mainly by two distinct manufacturing methods which result in either a welded pipe or seamless pipe. In both the manufacturing methods, raw steel is first cast into a more workable starting form (hot billet or flat strip). It is then made into a pipe by stretching the hot steel billet out into a seamless pipe or forcing the edges of flat steel strip together and sealing them with a weld. In this article we will discuss the various methods involved in seamless pipe manufacturing.
RUNFEI, YOUR BEST STEEL PARTNER!
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