Wholesale Decorative Welded Round SS Tube SUS 304L 316 316L 304 Stainless Steel Pipe / Tube Manufacturer and Supplier

Decorative Welded Round SS Tube SUS 304L 316 316L 304 Stainless Steel Pipe / Tube

Short Description:

Stainless steel is an iron alloy that is resistant to rust and corrosion. It contains at least 11% chromium. Stainless steel’s corrosion resistance comes from chromium, which forms a passive film that protects the material and repairs itself in the presence of oxygen.

Its cleanability, strength and corrosion resistance have led to the use of stainless steel in pharmaceutical and food processing plants.

Different types of stainless steel are marked with AISI three-digit numbers, and the ISO 15510 standard lists the chemical composition of stainless steels specified in existing ISO, ASTM, EN, JIS and GB standards in a useful interchange table.

Inspection: SGS, TUV, BV, Factory Inspection

Standard: AISI,ASTM,DIN,JIS,BS,NB

Model Number: 201, 202, 204， 301, 302, 303, 304, 304L, 309, 310, 310S, 316, 316L, 321， 408, 409, 410, 416, 420, 430, 440， 630， 904, 904L， 2205，2507, etc

Alloy Or Not: Non-Alloy

Outer Diameter: Customzied

Processing Service: Bending, Welding, Decoiling, Punching, Cutting, Moulding

Section Shape: Round

Surface Finish: BA/2B/NO.1/NO.3/NO.4/8K/HL/2D/1D

Delivery Time: 3-15 days (according to the actual tonnage)

Port Information: Tianjin Port, Shanghai Port, Qingdao Port, etc.

Payment terms: L/C T/T (30%DEPOSIT) Western Union

Send email to us Whatsapp Email

Product Detail

Product Tags

Product Detail

Product Name	Stainless steel Round pipe
Standard	ASTM AISI DIN, EN, GB, JIS
Steel Grade	200 Series: 201,202
	300 Series: 301,304,304L,316,316L,316Ti,317L,321,309s,310s
	400 Series: 409L,410,410s,420j1,420j2,430,444,441,436
	Duplex Steel: 904L,2205,2507,2101,2520,2304
Outer Diameter	6-2500mm(as required)
Thickness	0.3mm-150mm (as required)
Length	2000mm/2500mm/3000mm/6000mm/12000mm(as required)
Technique	Seamless
Surface	No.1 2B BA 6K 8K Mirror No.4 HL
Tolerance	±1%
Price Terms	FOB,CFR,CIF

Main Application

Stainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument, etc., as well as mechanical structural components. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. Also commonly used as furniture and kitchenware, etc.

Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.

Stainless Steel Pipe Chemical Compositions

Chemical Composition %
Grade	C	Si	Mn	P	S	Ni	Cr	Mo
201	≤0 .15	≤0 .75	5. 5-7. 5	≤0.06	≤ 0.03	3.5 -5.5	16 .0 -18.0	-
202	≤0 .15	≤l.0	7.5-10.0	≤0.06	≤ 0.03	4.0-6.0	17.0-19.0	-
301	≤0 .15	≤l.0	≤2.0	≤0.045	≤ 0.03	6.0-8.0	16.0-18.0	-
302	≤0 .15	≤1.0	≤2.0	≤0.035	≤ 0.03	8.0-10.0	17.0-19.0	-
304	≤0 .0.08	≤1.0	≤2.0	≤0.045	≤ 0.03	8.0-10.5	18.0-20.0	-
304L	≤0.03	≤1.0	≤2.0	≤0.035	≤ 0.03	9.0-13.0	18.0-20.0	-
309S	≤0.08	≤1.0	≤2.0	≤0.045	≤ 0.03	12.0-15.0	22.0-24.0	-
310S	≤0.08	≤1.5	≤2.0	≤0.035	≤ 0.03	19.0-22.0	24.0-26.0
316	≤0.08	≤1.0	≤2.0	≤0.045	≤ 0.03	10.0-14.0	16.0-18.0	2.0-3.0
316L	≤0 .03	≤1.0	≤2.0	≤0.045	≤ 0.03	12.0 - 15.0	16 .0 -1 8.0	2.0 -3.0
321	≤ 0 .08	≤1.0	≤2.0	≤0.035	≤ 0.03	9.0 - 13 .0	17.0 -1 9.0	-
630	≤ 0 .07	≤1.0	≤1.0	≤0.035	≤ 0.03	3.0-5.0	15.5-17.5	-
631	≤0.09	≤1.0	≤1.0	≤0.030	≤0.035	6.50-7.75	16.0-18.0	-
904L	≤ 2 .0	≤0.045	≤1.0	≤0.035	-	23.0·28.0	19.0-23.0	4.0-5.0
2205	≤0.03	≤1.0	≤2.0	≤0.030	≤0.02	4.5-6.5	22.0-23.0	3.0-3.5
2507	≤0.03	≤0.8	≤1.2	≤0.035	≤0.02	6.0-8.0	24.0-26.0	3.0-5.0
2520	≤0.08	≤1.5	≤2.0	≤0.045	≤ 0.03	0.19 -0. 22	0. 24 -0 . 26	-
410	≤0.15	≤1.0	≤1.0	≤0.035	≤ 0.03	-	11.5-13.5	-
430	≤0.1 2	≤0.75	≤1.0	≤ 0.040	≤ 0.03	≤0.60	16.0 -18.0

Stainless Steel Pipe Surface Finish

Through different processing methods of cold rolling and surface reprocessing after rolling, the surface finish of stainless steel bars can have different types.

The quality of the stainless steel surface is critical as it directly affects its corrosion resistance. Corrosion is a natural phenomenon that occurs when metals react with the chemical environment around them, such as air or moisture.

With stainless steel, the chromium in the alloy forms a protective layer on the surface that prevents the metal from reacting with its surroundings. This layer is called a passivation film. However, the passive film on stainless steel is not indestructible. If the surface is damaged or contaminated, the film can rupture, leaving the metal vulnerable to corrosion. That's why maintaining the cleanliness and integrity of stainless steel surfaces is critical.

There are several ways to improve the quality of stainless steel surfaces. One way is to use a process called passivation. This involves treating the surface with a special solution that removes any impurities and enhances the protective properties of the passive film. Passivation can be accomplished by a variety of techniques such as chemical baths or electropolishing.

Another way to maintain the quality of stainless steel surfaces is regular cleaning and maintenance. Stainless steel surfaces should be cleaned with a mild detergent and a soft cloth, and any stubborn stains or discolorations can be removed with specialized cleaning products.

Overall, the importance of the stainless steel finish cannot be overemphasized. Surface quality is critical to ensure the durability and longevity of the material. By following proper cleaning and maintenance procedures, stainless steel can continue to provide optimum performance and aesthetic appeal for many years to come.

Process of Production

Stainless steel is known for its durability, corrosion resistance and versatility. It is commonly used in various applications including pipe production.

Stainless steel pipe is widely used in industrial settings and in the construction of buildings and structures. The production process of stainless steel pipe is a complex process involving multiple steps.

Raw Material
The first step in manufacturing stainless steel pipe is to obtain raw materials. The main component of stainless steel is iron, but it is combined with other materials to give it unique properties. These materials include nickel, chromium and molybdenum. Raw materials are carefully selected and combined in proportion to produce the desired grade of stainless steel. These components are then melted together in a high-temperature furnace, where they fuse to form an alloy.casting Once the alloy is formed, it is poured into a mold to begin the process of shaping the material. Molds, usually made of sand or ceramic, are designed to form hollow tubes at the end of the process. After the alloy is poured into the mold, it is allowed to cool and solidify. The final shape is a tube with rough edges and an uneven surface.

scroll
The next step in the process is rolling. The tube is fed through a series of rollers that compress and shape the material, resulting in a more even surface and consistent diameter. The tube is then passed through the mandrel to ensure it is perfectly round and the wall thickness is uniform. This process, known as sizing, is critical to ensuring that the finished product meets the required specifications.

Cutting and Finishing
Once the tube has been sized, it's time for cutting and finishing. This includes cutting the tube to the desired length and smoothing out any rough edges or burrs. The tube is then polished to give it a smooth, shiny finish. This process helps to increase the pipe's corrosion resistance and gives it an attractive appearance.

Testing and Inspection
Finished products must undergo rigorous testing and inspection before they are sold. Check the tube for any defects such as cracks or rust spots. It also passed tests for strength, durability and corrosion resistance. Once the pipe has passed all required tests and inspections, it is ready for use. Stainless steel pipe produced using this process is used in a range of industries, including construction, oil and gas, and manufacturing.

In summary, the production of stainless steel pipes is a complex multi-step process involving multiple stages from raw materials to finished products. It requires careful attention to detail, precision and quality control to ensure the finished product meets the required specifications and is suitable for a variety of applications.