The corrosion resistance of stainless steel mainly depends on its alloy composition (chromium, nickel, titanium, silicon, aluminum, manganese, etc.) and internal structure, and the main role is chromium.

Chromium has high chemical stability and can form a passivation film on the steel surface to isolate the metal from the outside world, protect the steel plate from being oxidized, and increase the corrosion resistance of the steel plate. After the passivation film is destroyed, the corrosion resistance decreases.

Wide range of uses: pulp and paper equipment heat exchangers, machinery equipment, dyeing equipment, film processing equipment, pipelines, exterior materials for buildings in coastal areas, etc.

Runhai Steel Co., Ltd.

Runhai Steel Co., Ltd. is located in Jinan, Shandong Province. The company's products include stainless steel, seamless pipe, color coated plate, galvanized sheet, aluminized sheet, aluminum sheet, copper sheet and other profiles, building materials, pipe series. Products are widely used in chemical, pharmaceutical, electric power, railway, automotive, paper and construction engineering. The company has long-term 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 product consulting, procurement, ordering, use in the whole process without worry! Over the years, our company has won the trust of our customers with high-quality products, first-class service and ultra-low price. With the favor, our products are spread all over the country! Thanks to the support of new and old customers, Runhai people will work harder and enterprising, and return more customers with better and more efficient services!

1. who are we?
We are based in Shandong, China, we have 15 industrial steel history, There are total about 100 people in our factory.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3. what can you buy from us?
we can provide customized service of galvanized coil ,plate ,pipe and profile.
4. what services can we provide?
Pre-sale Service:
1. Sample can be offered with sample charge and courier fee by buyer's side.
2. We have full stock,and can deliver within short time.Many styles for your choices.
3. OEM and ODM order are accepted, Any kind of logo printing or design are available.
4. Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you
5. All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.
6. We have 8 year experience of design, manufacture and sell steel, we cherish every order from our honor.
After you choose:
1. We will count cheapest shipping cost and make invoice to you at once.
2. Check quality again, then send out to you at 1-2 working day after your payment,
3. Email you the tracking no, and help to chase the parcels until it arrive you.
After-sale choose:
1. We are very glad that customer give us some suggestion for price and products.
2. If any question,please contact with us freely by E-mail or Telephone.