Stainless steel square tube
  • Stainless steel square tube
  • Stainless steel square tube
  • Stainless steel square tube

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Product introduction

Stainless Steel Square Tube has inside and outside radius corners with a protruding interior weld seam. Stainless Square Tube is ideal for all structural applications where greater strength and superior corrosion resistance is required.
Outer Diameter6-2500mm， (3/8"-100")
Thickness0.3-150mm，(SCH10-XXS)
Length:2000mm, 2500mm, 3000mm, 5800mm, 6000mm,12000mm， etc
Standard:ASTM，AISI，JIS,，GB， DIN,，EN
Surface:BA，2B，NO.1，NO.4，4K，HL，8K
Application:It is widely used in high-temperature and electric industry, medical devices, construction, chemistry, food industry, agriculture, and ship components.It also applies to food and beverage packaging, kitchen supplies, trains, aircraft, conveyor belts, vehicles, bolts, nuts, springs, and screen mesh etc.
Certification: ISO, SGS，BV
Technique:Cold Drawn Seamless Tube / Welded pipe
Edge:Mill Edge Slit Edge
Quality:SGS Inspection
Grade （ASTM UNS）201，304，304L，321，316，316L，317L，347H，309S，310S，904L，S32205，2507，254SMOS，32760，253MA，N08926
Grade    （EN）1.4301，1.4307，1.4541，1.4401，1.4404，1.4571，1.4438，1.4539，1.4547，1.4529，1.4562，1.4410，1.4878，1.4845，1.4828，1.4876，2.4858，2.4819
Main market:Asia/Europe/ South America
Supply Ability:5000 Ton/Tons per Month
Packaging & DeliveryPackaging Detailsin bundle,plastic bags,thin film,wooden pallet,standard seaworthy export packing or as customer demands
20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)   24-26CBM40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)   54CBM40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)    68CBM


Inspection equipment

The production process of all products will be strictly controlled, and all products can accept the quality inspection of professional third-party testing institutions to ensure that each product meets the quality standards.

Material introduction

Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon and other nonmetals to obtain other desired properties. Stainless steel's resistance to corrosion results from the chromium, which forms a passive film that can protect the material and self-heal in the presence of oxygen.


The alloy's properties, such as luster and resistance to corrosion, are useful in many applications. Stainless steel can be rolled into sheets, plates, bars, wire, and tubing. These can be used in cookware, cutlery, surgical instruments, major appliances, vehicles, construction material in large buildings, industrial equipment (e.g., in paper mills, chemical plants, water treatment), and storage tanks and tankers for chemicals and food products.

The biological cleanability of stainless steel is superior to both aluminium and copper, and comparable to glass. Its cleanability, strength, and corrosion resistance have prompted the use of stainless steel in pharmaceutical and food processing plants.


The density of stainless steel can be somewhere between 7,500kg/m3 to 8,000kg/m3 depending on the alloy.


TypeCrNiCmaxOther ElementsMajor Characteristics
30317.00-19.008.00-10.000.15S 0.15 min† Free-machining modification of Type 302
303 Se17.00-19.008.00-10.000.15Se 0.15 min† Free-machining version of Type 302. Produces better surface finish than Type 303.
30418.00-20.008.00-10.000.08–† Low carbon variation of Type 302. Minimizes carbide precipitation during welding
304L18.00-20.008.00-10.000.03–† Extra-low carbon content eliminates harmful carbide precipitation due to welding
30922.00-24.0012.00-15.000.20–† High strength and resistance to scaling at high temperatures
31024.00-26.0019.00-22.000.20–† Higher alloy content improves basic characteristics of Type 309
31616.00-18.0010.00-14.000.08Mo 2.00-3.00† Mo improves general corrosion and pitting resistance and high temperature strength over that of Type 302
316L16.00-18.0010.00-14.000.20Mo 2.00-3.00† Extra-low carbon version of Type 316. Eliminates harmful carbide precipitation due to welding
31718.00-20.0011.00-15.000.08Mo 3.00-4.00† Higher alloy content improves basic advantages of Type 316
32117.00-19.009.00-12.000.08Ti 5 x C. min† Stabilized to permit use in 800-1500°F temperature range without harmful carbide precipitation
34717.00-19.009.00-13.00.008Cb + Ta 10 x C. min† Characteristics similar to Type 321. Stabilized by Cb and Ta.
34817.00-19.009.00-13.000.08Ta 0.10 max Cb 0.20 max
Cb + Ta 10 x C min		† Similar to Type 347 but Ta reduced for atomic energy applications
41011.50-13.50-0.15-¥ Lowest cost general purpose stainless steel. Wide use where corrosion is not severe.
41612.00-14.00-0.15S 0.15 min¥ Free-machining version of Type 410.
42012.00-14.00-0.15 min-¥ Similar variation of Type 410 but higher carbon produces higher strength and hardness.
43014.00-18.00-0.12-* Most popular of the chromium types. Combines good corrosion and heat resistance and mechanical properties.
430 F14.00-18.00-0.12S 0.15 min* Free-machining version of Type 430.
440A
440B
440C		16.00-18.00
16.00-18.00
16.00-18.00		-0.60-0.75
0.75-0.95
0.95-1.20		-¥ Series of high carbon types. Some basic composition with varying carbon content. Higher carbon produces higher strength and hardness but lower toughness. All Type 440 versions are corrosion resistant only in the hardened condition.
44623.00-27.00-0.20-* Similar to Type 442 but Cr increased to provide maximum resistance to scaling.
15-5 PH14.00-15.503.50-5.500.07Cu 2.50-4.50• Similar in properties and characteristics to 17-4 PH but has superior transverse ductility and toughness.
PH 15-7 Mo14.00-16.006.50-7.750.09Mo 2.00-3.00
Al 0.75-1.50		•• Special type similar to 17-7 PH but with higher strength.
17-4 PH15.50-17.503.00-5.000.07Cu 3.00-5.00• Special type that combines excellent corrosion resistance…high strength and hardness… low temperature hardening and good fabrication characteristics.
17-7 PH16.00-18.006.50-7.750.09AL 0.75-1.25•• Special ultra-high strength type with good formability and excellent fabricating characteristics.


Packaging & Warehouse

In order to ensure the supply of goods, we also maintain good cooperation with major steel mills in China.

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+86 13685310104

+86 13685310104

info@rendasteel.com

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