S235JR Square Steel
Hot-rolled square steel refers to steel rolled or processed into a square cross-section. Square steel can be divided into two types: hot-rolled and cold-rolled; the side length of hot-rolled square steel is 5-250mm, and the side length of cold-drawn square steel is 3-100mm. Stainless steel square steel is mainly used for fine decoration, such as doors and windows.
Product Details
Commodity Cold Drawing / Drawn Flat/ Square / Rectangular / Rectangle / Hexagonal / Special Shape Rods Bars
Standard GB/T 3078-2019, GB/T 905-1994
Grades Carbon steel SAE 1018 , A36, SS400, S235JR, Q235, SAE 1020, S20C , 1.0402, 20GB, CK22,SAE 1045 ,S45C, C45, CK45, EN8 ,1.1191
Alloy steel SAE 5120 , 20Cr, Scr 420H, 20Cr4, SAE 5140 , 40Cr,SCr440, 520M40,SAE 4130 , 30CrMo, SCM430, SCM420, SAE 4140 , 42CrMo4, EN19, SCM440,708A42, 708M40, SAE 4340, 40CrNiMoA,871M40 , SNCM439
Specification Round Bar 5mm to 100mm
Square bar 5*5mm to 120*120mm
Flat bar 5*20mm to 20*100mm
hex bar 5mm to 120mm
hexagonal bar 5mm to 120mm (side to side)
Tolerance Class H11
Length 4-12m random length or as per request fixed length
Surface Bright, or dark as per required
Packing Wrapped by plastic clothes and steel strips
Delivery Condition BK, BKW, GBK, NBK
ContainerSize 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
Application hardware tools, auto parts, standard parts, fasteners common shaft, machinery manufacturing, light industry, hardware, bicycles,cars, motorcycles, textile machinery, transformers and other machinery industry.
Advantages greater size accuracy, straightness and increased tensile and yield strength as well as improved machinability
MOQ 1 tons


Side length(mm) Sectional area (cm2) Theoretical weight (kg/m) Side length(mm) Sectional area (cm2) Theoretical weight (kg/m)
5mm 0.25 0.196 30mm 9.00 7.06
6mm 0.36 0.283 32mm 10.24 8.04
7mm 0.49 0.385 34mm 11.56 9.07
8mm 0.64 0.502 36mm 12.96 10.17
9mm 0.81 0.636 38mm 14.44 11.24
10mm 1.00 0.785 40mm 16.00 12.56
11mm 1.21 0.95 42mm 17.64 13.85
12mm 1.44 1.13 45mm 20.25 15.90
13mm 1.69 1.33 48mm 23.04 18.09
14mm 1.96 1.54 50mm 25.00 19.63
15mm 2.25 1.77 53mm 28.09 22.05
16mm 2.56 2.01 56mm 31.36 24.61
17mm 2.89 2.27 60mm 36.00 28.26
18mm 3.24 2.54 63mm 39.69 31.16
19mm 3.61 2.82 65mm 42.25 33.17
20mm 4.00 3.14 70mm 49.00 38.49
21mm 4.41 3.46 75mm 56.25 44.16
22mm 4.84 3.80 80mm 64.00 50.24
24mm 5.76 4.52 85mm 72.25 56.72
25mm 6.25 4.91 90mm 81.00 63.59
26mm 6.76 5.30 95mm 90.25 70.85
28mm 7.84 6.15 100mm 100.00 78.50
Product Display

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Product Application

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Product Packaging

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Factory Display
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FAQ

Q: Are you trading company or manufacturer ?

A: We are professional manufacturer with 20 years' experience, and our company also is a very professional a trade company for steel products.We can also provide a wide range of steel products.

Q: Will you delivery the goods on time?

A: Yes,we promise to deliver on time,indemnity clause in contract terms will work if we couldn't.

Q: Do you provide samples ? Is it free or extra ?

A: The samples are free,you just need to pay the courier freight.

Q: Do you accept the third party inspection?

A: Yes, absolutely we accept.

Q: How could you guarantee your products?

A: Products are manufactured by certified workshops, inspected by professional inspector.

Q: How do we trust your company?

A: We specialist in steel business for many years, authenticated by SGS,welcome to visit our factory.

Q: What's your advantages?

A: Our own production lines make the good prices and high quality possible and seasoned workers serve you 7*24 hours.

Q: Can you produce the products according to my own drawings?

A:Yes,we can produce the products according to your drawings that will be most satisfy you.

Q: What is your Payment?

A: 100% T/T advance , Western Union (For Small Order)
B: 30% T/T and balance 70% before the shipment
C: 100% Irrevocable LC at sight (For Big Order)

Q: How long is the Delivery time?

A: 7~20 working days after confirming the payment.
If the order is urgently, we will push our workshop finish in advance.

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