Stainless Steel Manufacturers China

Wanzhi Steel is one of the wholesale stainless steel manufacturers and suppliers in China, which stocks a wide range of SS products in 304, 316, 400, etc. Our product range includes stainless steel coils, sheets, strips, plates, etc. Due to its excellent corrosion resistance, smooth surface, high plasticity and toughness, stainless steel is widely used in construction projects, automobiles, kitchenware, industrial equipment, food industry, etc. If you are looking for steel products, welcome to contact us!

Stainless Steel Products for Sale

Wanzhi Steel is one of the most reliable stainless steel manufacturers and suppliers in China. We have various products with complete specifications. Below is a table for your reference.

Product Name	Stainless Steel Coil, Sheet, Strip
Thickness	0.25mm – 4.0mm
Width	10mm – 1,500mm
Grade	200 series/300 series /400 series,  201/202/304/304L/316/316L/410/420, etc.
Technology	Hot Rolled/Cold Rolled
Standard	ASME, ASTM, EN, BS, GB, DIN, JIS, etc.
Surface Finish	No.1/No.2/2B/BA/Mirror/8K/Hairline
Package	Standard Seaworthy Package

Features of Stainless Steel

Applications of Stainless Steel

Due to the many great features of stainless steel, it is widely used in many industries. It includes constructions, home appliances, automobiles, kitchen accessories, mechanical structure, decoration engineering, chemical industry, etc. Let’s have a brief review.

1. Construction & Buildings

It is an essential building material widely used in commercial buildings, bridges, airports, etc. The most common uses include structural frames, roofing, wall panels, claddings, door panels, backsplash, handrailings, ceilings, elevator hall, inner panels of elevators, etc. Also, it is perfect for making handicrafts.

2. Automobile

Different grades of stainless steel can be used to manufacture car bodies, grills, trims, wheel axles, bearings, vehicular exhaust, fuel tanks, etc.

3. Industrial Uses

Stainless steel is ideal for transporting chemicals, liquids, etc. It is typical for medical uses, gas and oil industries, such as pipelines and tubes, blades, operation tables, pumps, processing or storage tanks & vessels, etc.

4. Household Appliances 

About 75% of household appliances are made of stainless steel, including internal panels of cookers, heaters, ovens, burners, conveyors, grills, television, washing machine, refrigerator, kitchen hardware, etc.

5. Furniture & Daily Uses

Stainless steel coil and sheet are also versatile in our daily life, such as trash cans, screens, benches, tables, beds, bookshelves, advertising boards, display stands, etc.

What Is Stainless Steel?

According to the definition in GB/T20878-2007, stainless steel is a kind of steel material with excellent corrosion resistance. Its chromium content is at least 10.5%, and the carbon content is not more than 1.2%.

Different Grades of Stainless Steel

By industry standards, it has several grades to adapt to different use environments. They are:

• 200 series (Cr-Mn-Ni): 201, 202
• 300 series (Cr-Ni): 301, 302, 303, 304, 304L, 304N, 309, 309S, 310, 316, 316L, 321, 347
• 400 series (Cr): 408, 409, 410, 416, 420, 430, 440

Below is a table showing the different compositions.

Grade	C Max	Mn Max	P Max	S Max	Si Max	Cr	Ni	Mo
301	0.15	2.00	0.05	0.03	1.00	16.00-18.00	6.00-8.00
302	0.15	2.00	0.04	0.03	1.00	17.00-19.00	8.00-10.00
304	0.07	2.00	0.05	0.03	1.00	18.00-20.00	8.00-10.50
304L	0.03	2.00	0.05	0.03	1.00	18.00-20.00	9.00-13.00
301S	0.08	2.00	0.05	0.03	1.00	24.00-26.00	19.00-22.00
316	0.08	2.00	0.05	0.03	1.00	16.00-18.00	10.00-14.00	2.00-3.00
316L	0.03	2.00	0.05	0.03	1.00	16.00-18.00	12.00-15.00	2.00-3.00
321	0.08	2.00	0.05	0.03	1.00	17.00-19.00	19.00-13.00
430	0.12	1.00	0.04	0.03	0.75	16.00-18.00

Density of Stainless Steel

Steel Grade	Density(g/cm3)
201, 202, 304, 304L, 305, 321, 301, 302	7.93
316, 316L, 309S, 310S, 347	7.98
405, 410, 420	7.75
409, 430, 434	7.7

Weight of Stainless Steel Sheet

The weight of stainless steel sheet can be calculated by the following formula:

Weight (kg)= Thickness (mm)* width (m)* length (m)* density (g/cm³)

For example, if the SS304 sheet is 16 gauge (1.6mm) in thickness, 950mm in width, and 2.2m in length, its weight is about 26.52 kg (1.6*0.95*2.2*7.93).

The stainless steel weight per square meter differs with the thickness and the steel grade. For example, the weight of 0.64mm (24GA) SS304/304L per square meter is about 5 kg. While the weight of 0.48mm (26GA) SS316/316L is about 3.8 kg. Below is the gauge chart for your reference. If you want more details, please get in touch with us!

Stainless Steel Gauge Chart

Gauge	Thickness (inch)	Thickness (mm)	Tolerance
11 Gauge	0.120”	3.17mm	± 0.005
12 Gauge	0.109”	2.78mm	± 0.009 | ± 0.23mm
14 Gauge	0.078”	1.98mm	± 0.007 | ± 0.18mm
16 Gauge	0.063”	1.59mm	± 0.006 | ± 0.15mm
18 Gauge	0.050”	1.27mm	± 0.005 | ± 0.13mm
20 Gauge	0.038”	0.95mm	± 0.004 | ± 0.10mm
22 Gauge	0.031”	0.79mm	± 0.004 | ± 0.10mm
24 Gauge	0.025”	0.64mm	± 0.003 | ± 0.08mm
26 Gauge	0.018”	0.476mm	± 0.003 | ± 0.08mm
28 Gauge	0.0156”	0.396mm	± 0.002 | ± 0.07mm
30 Gauge	0.0125”	0.32mm	± 0.002 | ± 0.07mm

Types of Stainless Steel

According to the processing method, the stainless steel is often manufactured by either hot rolled stainless steel sheet or cold rolled stainless steel sheet. Let’s see them below.

Hot Rolled Stainless Steel Coil

It is made from slab by roughing mill and finishing mill at the recrystallization temperature of steel about 1,100° C – 1,300° C. By hot rolling and coiling, the coil will get a softer surface finish, free of any oxide layers and impurities.

Cold Rolled Stainless Steel Coil

It is often processed based on the hot rolled stainless steel sheet. The coil will go through several processes like hot rolling, acid pickling, and cold rolling at room temperature. It can be made into a variety of cross-sectional forms to meet the different needs.

Hot Rolled VS Cold Rolled Stainless Steel

Different stainless steel manufacturers in China will offer both hot rolled and cold rolled stainless steel. Below are more differences for your reference.

1. Making Method
The former is made at high temperatures, while the latter is processed at average temperatures. It often decides the grade of the steel used for the manufacturing process.

2. Surface Treatment
Cold rolled stainless steel coils with good surface quality, no oxidation scales, and various surface treatments available. After pickling, there are oxidation scales on hot rolled stainless steel coils, and the surface is grayish or dark brown. And the smoothness of cold rolled stainless coil is higher than that of hot-rolled coil.

3. Mechanical Property
The mechanical property of hot-rolled stainless steel is much lower than that of cold-rolled stainless steel. The cold rolling possesses higher hardness.

4. Price
Cold rolled SS coil has higher toughness and surface quality than hot rolled SS coil and higher price than hot rolled coil. But the price also depends on the quality of the product. Different suppliers will offer different prices. For example, Wanzhi Steel can often offer factory sales prices for large orders compared to other SS coil manufacturers. Feel free to contact us for more details.

Surface Treatment

As one of the top stainless steel manufacturers in China, we offer stainless steel coils and sheets with different surface finishes.

Surface Finish	Features	Manufacturing Process	Applications
NO.1	Silvery white, matt	Hot rolling	To meet the purpose that does not need gloss surface
NO.2D	Silvery white	Heat treatment and pickling after cold rolling	General uses or deep drawing uses
NO.2B	Surface brightness is better than that of NO. 2D	Go through polishing rollers after NO.2D treatment	General uses
BA	Bright as a mirror, excellent brightness	Bright annealing	Building materials, kitchen utensils
NO.3	Better brightness	Polished with #100-120 abrasive belt	Building materials, electrical appliances and kitchen utensils
No.4	Polished surface	Polished with #150-180 abrasive belt	Building materials, electrical appliances and kitchen utensils
HL	Hairline grinding	Polished with abrasive belt of grit #150-#320	Building materials
NO.8	Mirror Polishing	Polished with polishing wheel for a mirror	Decorative uses

American Stainless Steel Codes

The grades of stainless steel are designated with three digits by the American Iron and Steel Institute.

1. Austenitic stainless steel is marked with numbers of 200 and 300 series. For example, some of the common austenitic stainless steel is marked with 201, 304, 316, and 310.

2. Ferritic and martensitic stainless steels are represented by the 400 series. Ferritic stainless steel is marked with 430 and 446, while martensitic stainless steel uses 410, 420, and 440C.

3. Precipitation hardening stainless steel and high alloys with less than 50% iron content are usually named by patent names or trademarks.

Wanzhi Steel is one of the qualified stainless steel manufacturers in China. We will promise our products will meet the national standards. If you have special requirements, please let us know.

Will Stainless Steel Rust?

Stainless steel is a material that has strong corrosion resistance, which means it does not easily rust. It is formed by adding anti-corrosion elements such as nickel to form a very thin, firm, and stable chromium-rich oxide protective film, preventing continuous infiltration and oxidation. However, it will rust in certain conditions – when exposed to damaging chemicals, saline, grease, moisture, or heat for an extended period. In addition, the greater the nickel content, the greater the possibility of rusting.

1. Electrochemical Corrosion

It occurs when the surface of stainless steel accumulates dust containing other metal elements or dissimilar metal particles. In humid air, the water between the attachment and the stainless steel connects the two into a micro-battery, which triggers an electrochemical reaction and damages the protective film. It is called electrochemical corrosion.

2. Chemical Corrosion

The stainless steel surface adheres to organic juices (such as vegetables, noodle soup, sputum, etc.). In the presence of water and oxygen, it constitutes an organic acid, and the organic acid corrodes the metal surface for a long time. Similarly, corrosion is caused when stainless steel’s surface adheres to acids, alkalis, and salts or is used in polluted air (such as the atmosphere with many sulfides, carbon oxide, and nitrogen oxide).

Tips for Reduce Corrosion

1. Clean the stainless steel surface frequently to remove attachments and eliminate external factors that cause rust.

2. Paint a layer of titanium a layer of fingerprint-free oil or anticorrosive paintings on the surface to prevent the stainless steel from rusting.

3. Use suitable materials according to the use environment. For example, SS304 has excellent anti-corrosion ability in dry and clean atmospheres. While SS316 is more suitable for seaside areas, which can resist seawater corrosion.

4. By stainless steel products from reputable manufacturers, which can meet the corresponding national standards.

How To Store Stainless Steel Products?

Pay more attention to its storage condition so as to extend the lifespan of the stainless steel. As an experienced stainless steel manufacturer in China, here are some useful tips for you:
1. It should be stored in a dry, ventilated, and non-polluting place.
2. Avoid exposure to outdoors or confined space with high temperature or wetting, as it is prone to oxidation under long-term humidity and high temperature.
3. Avoid storing the coils with corrosive substances such as acids and alkalis, as it will accelerate the corrosion of stainless coil.
4. The recommended storage temperature is 20℃±10, and the recommended humidity is 60%±10.

Services Provided by Stainless Steel Manufacturers China

Wanzhi Steel is a wholesale stainless steel manufacturer in China. We mainly use steel billets from large steel mills, including Baosteel, Taiyuan Iron and Steel, etc., which are suitable for deep drawing processing and surface deep processing. So we can provide SS coils, sheets, plates and strips. Meanwhile, we can also offer further processing services to meet your needs better.

1. Welding Service

The common method is spot welding. Before welding, it is necessary to clean up moisture, paint, etc. Then use the special brush to remove welding slags. After welding, grind the stainless steel surface to prevent loss of strength and corrosion resistance due to welding.

​​2. Bending or Profiling Service​

Due to the particularity of the customer’s use, we also offer bending or profiling service. And the maximum bending degree can reach 180°. Besides, it can be profiled into corrugated steel sheets.

3. Cutting & Slitting Service

We can cut the SS coil into sheets or slit it into the desired size. We mainly use plasma or laser instruments for cutting.

​4. Stamping

​Please note that stainless steel has higher strength than ordinary materials when stamping. So it needs to have more pressure during stamping and avoid hardening.

5. Film Covering

The stainless steel is often covered with an electrostatic film to prevent it from being scattered during transportation or storage.

Why Choose Stainless Steel Manufacturers in China?

Most investors and traders would like to choose stainless steel manufacturers in China. Why? The most important factor is the cheaper price. There is a complete supply chain network from raw materials to labor. So you may get the same products at a lower cost from China, even with shipping and taxes fees.

How to Buy from Stainless Steel Manufacturers in China?

1. Do more research. You have to investigate the supplier’s background, company strength, factory, customer review, etc. before purchasing. If you want a lower price, choose less well-known, but reliable suppliers. You can find a lot of company information, such as the website, Facebook pages, Linkedin, etc. Due to COVID-19, it is difficult to visit onsite. But you can ask for video chats, videos, etc.

2. Compare the suppliers, product details, and their service.

3. Do not rely on the price only. If you are experienced, you will know that there is little price difference between the same products. You need to watch out for much lower prices to avoid getting scammed. Especially, SS steel has many grades. You may get SS202 instead of SS304. As for quality items, you can ask for certificates, quality inspections, samples, etc. At Wanzhi Steel, we accept third-party inspection. Also, you can get samples free. If you have any problems, please contact us for help.

Get Latest Stainless Steel Price Here

Wanzhi Steel has a stainless steel factory in China with 750mm, 950mm, 1,240mm cold rolled rolling lines, shearing lines, slitting lines, bending machines, surface processing equipment, etc. So we are able to offer a wide range of stainless steel products. Our products include stainless steel coils, plates, sheets, and strips. The stainless steel material includes 304, 304L, 316L, 321, 309S, 310S, 904L, etc.  The annual output of stainless steel products is more than 2,000 tons. Besides, we have developed professional production, sales, and quality inspection teams. As one of the leading stainless steel manufacturers in China, we have served many clients worldwide and gained many good reviews. Welcome to contact us for details!