SS201/301/304/316 4x8 Seamless Tube 500mm Diameter Steel Pipe 57mm Steel Pipe Tube

The stainless steel tube can be classified into a Cr system (400 series), a Cr-Ni system (300 series), a Cr-Mn-Ni (200 series), and a precipitation hardening system (600 series). 200 series - chrome-nickel-manganese austenitic stainless steel, 300 series - chrome-nickel austenitic stainless steel.
301-----extension is good for molding products. It can also be hardened by mechanical processing. Good weldability. Wear resistance and fatigue strength are better than 304 stainless steel.
302-----corrosion resistance is the same as 304, because the carbon content is relatively high and the strength is better.
303-----It is easier to cut than 304 by adding a small amount of sulfur and phosphorus.
304-----that is 18/8 stainless steel. The GB grade is 0Cr18Ni9. 309 - Better temperature resistance than 304.
316-----After 304, the second most widely used steel grade, mainly used in the food industry, the pharmaceutical industry and surgical equipment, added molybdenum to obtain a special structure resistant to corrosion.
321 - Other properties are similar to 304 except that the addition of titanium reduces the risk of corrosion of the material weld.
400 series - ferritic and martensitic stainless steel.
408—Good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
409—The cheapest model, usually used as a car exhaust pipe, is a ferritic stainless steel (chrome steel).
410—Martensite (high-strength chrome steel) with good wear resistance and poor corrosion resistance.
416—The addition of sulfur improves the processing properties of the material.
420—“cutting grade” martensitic steel, similar to the earliest stainless steel of Brinell high chromium steel. Also used for surgical knives, it can be done very brightly.
430 - ferritic stainless steel, for decoration, for example for automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.
440—High-strength cutting tool steel with slightly higher carbon content. After proper heat treatment, it can obtain higher yield strength and hardness can reach 58HRC, which is among the hardest stainless steel. The most common application example is the "razor blade." There are three commonly used models: 440A, 440B, 440C, and 440F (easy processing type).
500 series - heat resistant chrome alloy steel.
600 Series - Martensitic precipitation hardened stainless steel tube.

Wooden support + waterproof and moisture-proof plastic film + cowhide bag + edge protection + steel belt

Our advantage:

Jinan Zhongcheng International Trade Co., Ltd is one of the largest exporters of steel in China. Our company's philosophy is to unite together for mutual benefit and win-win. Always uphold the "quality, integrity and pragmatic, motivated, service-oriented" business philosophy, and applies the company's management and operating among. Strict quality guarantee system and perfect management system, high-quality products after-sales service is our foothold in this, my company of "quality first, reputation first" principle, provide customers with quality and quantity of various types of products. Since its inception continue to absorb a variety of talents, improve product quality, improving staff quality, in order to grow their companies. Main aluminum, stainless steel,galvanized steel, carbon steel, copper, ppgl/ppgi. corrugated sheet products. and we have exported to more than 50 countries and regions. Our company has 60, 000-square-meter workshops,covers an area more than 100,000 square meters in size ,and well over 65 million USD in assets. The face of fierce competition, the company system is constantly being improved, relying on science and technology, continuously improve the technology content of products sold, for society, customers and companies to create a higher market value. My company has been in good faith to create enterprises, to credit management market, has won a good reputation, also won the respect of their domestic counterparts.

Q: Are you manufacturer?

A: We are one of industry and trade

Q:Can you produce according to my requirement?

A:Yes, all the design, size, printing and packaging can be done according to customer's request.

Q: Do you offer free samples?

A: Sure,we are glad to send you free samples for your evaluation.But currently we need you to kindly pay the delivery charge on your side .

Q: What's your MOQ?

A: Normally 1 Tons are requested as the minimum order quantity on our side.

Q:How long is your delivery time?

A: About 7-15 days

Q:What specification should I tell you if I wanna get the quotation?

A: Alloy . Size .Temper and Estimated quantity

Q: What's your payment term?

A: We accept T/T, LC