Stainless steel pipe is a kind of hollow long round steel, which is mainly used in industrial transportation pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and so on. 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. It is also commonly used as furniture and kitchenware.
 

Stainless steel is a kind of material with brightness close to mirror surface, tough and cold touch. It is a relatively avant-garde decorative material with excellent corrosion resistance, formability, compatibility and toughness. It is used in heavy
industry and light industry, Daily necessities industry and architectural decoration industries.

feature :
1. Stainless steel has different grades, correspond to different hardness, thermoplastic, plasticity and weldability. If you
don't understand, you can tell us your requirements.
2. Stainless steel can be customized for different surfaces, and different surfaces have different applications. For example, 8k mirrors are generally used for decoration.
3. We have more than 30 years of experience in this industry and believe that we can satisfy any demand for stainless steel raw materials.

Company Profile

Shandong Runhai stainless steel Co., Ltd. is located in Jinan city, Shandong Province, with a registered capital of 51.17 million  yuan. Is a set of domestic trade, foreign trade in one of the professional steel sales company.Our hot sale items including  stainless steel plate/tube/coil, carbon steel plate/tube/coil,Galvanized steel plate/tube/coil, Aluminum sheet/coil /tube,PPGI/PPGL,copper plate/tube and aluminum plate/tube, Pre painted steel coils,Roofing sheet,H I U Angle Beam,Deformed  Bar&Round Bar, iron wire etc.
The products are widely used in chemical, pharmaceutical, electric power, railway, automobile, paper making and construction  engineering. The company has long-term and close trade relations with shandong Iron and Steel, Tangshan Iron and Steel, Handan Iron and Steel,  Jinxi iron and steel and other well-known domestic steel companies.
The company has advanced WMS, CRM management system, to ensure that our customers in the whole process of product consulting,  procurement, ordering, use without worry!  Over the years, the company has won the trust of our customers with high-quality products,  first-class service and ultra-low price.
Favored by the majority of customers, products are exported to all over the world! Thanks  for the support of old and new customers, Runhai people will work harder and make progress, and return more customers with better  and more efficient service!
We have set up a central warehouse in Tai 'an, Shandong Province, China, with dozens of processing lines and sufficient inventory.  We can provide you with the shortest supply cycle on the basis of quality and quantity;
At the same time, our company has nearly dozens of experienced technical consulting team. In order for you to choose the right  product model, we have established a first-class marketing team and first-class efficiency and service!
 

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.

1.Q: Why choose us?