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321 Stainless steel square steel

321 Stainless steel square steel 25x25mm exhibits high strength, resistance to oxidation peeling and subsequent stability against aqueous solution corrosion in a temperature range up to approximately 900 degrees Celsius. 321 stainless steel cold rolled sheet also has excellent forming and welding characteristics, can be bent or roll pressed forming, no annealing after welding. It has excellent toughness even at low temperatures.


321 Stainless steel square steel


Product Details

Product Presentation

321 Stainless steel square steel  is stainless steel material rolled or processed into a square section of stainless steel profile.Stainless steel square steel is used in fine decoration steel. Such as doors and Windows.

Material and performance

Product Name Stainless Steel Square Bar/Rod
Specification 3x3mm-80x80mm
Grade 201 202 301 304 304L 316 316L 321 309S 310S 317L 347H 304H 316Ti etc.
Tolerance ±1
Surface Treatment Polish /Bright/ Black or Customer Requirement/

Industrial acid washing

Certification ISO
Product Range Stamped+Mirror+Color
Supply Ability 2000 metric tons/month
Shipment time Within 7-10 workdays after receiving deposit or L/C
Payments T/T,LC



Stainless steel profiles are often used in the construction of the project, this is because stainless steel has a good corrosion resistance, so the use of stainless steel production design products can be lasting to maintain the integrity of the sample, which is where the name of stainless steel comes from. Stainless steel containing chromium metal has good ductility, which is conducive to the processing and production of products, and can meet the needs of processors and design.

Stainless steel is very versatile, it can cover every corner of your life, bed frames, window bezels, cell phone cases, keys, spoons, railings and so on. And its wide range of uses is not only attributed to the performance of stainless steel, but also partly attributed to the diversity of stainless steel profiles. The types of stainless steel profiles are angles, flat bars and square bars.

The following are the specifications of stainless steel angles, flats and squares.

Stainless steel angles: Specifications Z10mmX10mm - Z150mmX150mm

The use of angle steel: widely used in building structure and engineering construction, such as: house beam, ship beam, industrial furnace, etc.

Stainless steel angle is a long strip of steel with two sides perpendicular to each other in an angle shape. There are equilateral stainless steel angles and unequal stainless steel angles. Equilateral stainless steel angle has two sides of equal width stainless steel flat steel, stainless steel square steel: specifications 10mmX10mm-750mmX750mm

Flat steel, square steel applications: used in industrial manufacturing, such as: household sinks, stainless steel valves, medical products, etc..

Stainless steel is widely used, in industrial facilities, experts expect the production of electrical appliances in the field of stainless steel consumption from 8% to 10%; in the water industry, as people increase awareness of environmental protection, thin-walled stainless steel water pipe safety and reliability, health and environmental protection advantages are increasingly concerned about: in the environmental protection Ding industry, Ding industry waste gas, waste and sewage outside the treatment facilities will be made of stainless steel, and the automotive industry is Stainless steel use of large-scale starting point.

It must be said that the birth of stainless steel to promote not only the industrial level of industry, but also to facilitate our lives. Stainless steel is just a big step forward in human history, but I believe that in the near future we can also invent a more practical metal material.

Grade and classification of stainless steel surface treatment


Code of surface


Summary of manufacturing method


Primary surface


Silvery white without luster

A surface treated with heat treatment and pickling after hot rolling.

Industrial tank, chemical industrial equipment, etc., thick 3.0MM-10.0MM. It does not need to have a glossy surface

Blunt surface


A slightly lustrous silvery white

Hot rolling + annealing shot peening acid first + cold rolling + annealing pickling

Used for deep stamping, such as automotive components, water pipes, etc. General materials, deep drawing materials

Fog surface


Silver and better than 2D surface gloss and flatness, 0.39 micron roughness

Hot rolling + annealing shot peening + cold rolling + annealing pickling + tempering rolling. After NO.2D treatment, the final mild cold rolling is carried out by polishing roller

Such as tableware, building materials and so on. With improved mechanical properties of the surface treatment, almost all applications.

Frosted surface


Has a better gloss, with discontinuous coarse grain.

Use 100-120 grinding strip to grind out the product

Used for interior and exterior decoration materials, electrical products and kitchen equipment, etc.

Frosted surface


Better gloss, with discontinuous coarse lines, stripes thinner than NO.3.

With particle size 150-180 grinding belt grinding out the product

Used for bath, interior and exterior decoration materials, electrical products, kitchen equipment and food equipment, etc.

Frosted surface


Better gloss, with discontinuous coarse lines, stripes thinner than NO.4.

The product is ground with the 240 grinding belt

Used for bath, interior and exterior decoration materials, electrical products, kitchen equipment and food equipment, etc.

Frosted surface


Has a better gloss, with discontinuous coarse grain

The product is ground with the 320 grinding belt

Building materials, kitchen utensils

Frosted surface


Has a better gloss, with discontinuous coarse grain

The product is ground with the 400 grinding belt

Building materials, kitchen utensils, food equipment, etc

Drawing surface


Silvery gray with hair streaks. 2D or 28pcs are polished with a suitable abrasive material to make the surface continuously abrasive

A product with a continuous abrasive pattern produced by the continuous grinding of an appropriately sized polished strip (subdivision 150-320)

Mainly used for architectural decoration, elevator, building doors, panels and so on.

Bright surface


Excellent surface gloss and high reflectivity.

Usually bright and fire surface processing, surface reflection is very high.

Used in household appliances, mirrors, kitchen equipment, decorative materials, etc

mirror surface


It's not much worse than a mirror

Rough lapping

Mirrors, decorative panels

mirror surface



Grinding and polishing

Mirrors, decorative panels


Pack and Ship






Customer Evaluation

Over the years, we strive for survival by quality and development by efficiency, adhering to the business philosophy of "integrity, pragmatism, innovation and development", and have repeatedly won praise from customers.



Are you a manufacturing company or a trading company?


We are a manufacturer of metal materials and products with many years of experience.


Can you provide samples?


We can provide free samples, but samples are subject to a sample fee, which is refundable upon order confirmation.


How can I get an accurate quotation?


Please provide the product standard, material, size, quantity and other information.


What kind of payment terms do you accept?


We can accept T/T, L/C, Western Union or negotiation.


What markets do you mainly sell to?


Australia, America, Asia, Middle East, Western Europe, Africa, etc


Can you deliver the goods on time?


Yes, whether the price changes or not, we guarantee to provide the best quality products and on time delivery. Integrity is the purpose of our company.

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Shandong Zhongyi Metal Products Co., Ltd. is an enterprise specializing in the research and development, production, sales and service of metal products. Located in Shandong Province, China, the company covers a vast area with advanced production equipment and testing instruments, and a team of skilled and strong staff.

Zongyi Metal Products Co., Ltd. mainly produces all kinds of metal products, serving the industries of precision machinery parts, automobile parts, electronic components, construction and decoration materials. Adhering to the business philosophy of "Quality is the foundation, Innovation is the soul", the company constantly introduces advanced technology and equipment to improve product quality and reduce production costs to meet customer needs.

We have rich experience in the metal products industry, and our products sell well in domestic and international markets and are well received by customers. We always adhere to the customer-centered, market-oriented, in order to survive, innovation and development. We are willing to cooperate with customers at home and abroad to create a better future.









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