Square bar 5mm-100mm

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Supply Capability:: -

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Product Description:

We offer Square Steel Bar with grade Q195 / Q235

Specifications of Square Steel Bar:

-Standard: GB,

-Grade: Q195/Q235 or equivalent.

Chemical Composition:

-Chemical Composition. Q195

Standard	Grade	Element (%)
GB	Q195	C	Mn	S	P	Si
GB	Q195	0.06~0.12	0.25~0.50	≤0.050	≤0.045	≤0.30

-Chemical Composition. Q235

Standard	Grade	Element (%)
GB	Q235B	C	Mn	S	P	Si
GB	Q235B	0.12~0.20	0.30~0.70	≤0.045	≤0.045	≤0.30

Measures and Tolerances of Square Steel Bar:

Section of Square Steel Bar.

(The section of Square Steel Bar)

-The length of a side and the theoretical weight of Square Steel.

Length of a side(a, mm)	Theoretical weight(kg/m)	Length of a side(a, mm)	Theoretical weight(kg/m)
6	0.283	32	8.04
7	0.385	＊33	8.55
8	0.502	34	9.07
9	0.636	＊35	9.62
10	0.785	36	10.17
11	0.950	38	11.24
12	1.13	40	12.56
13	1.33	42	13.85
14	1.54	45	15.90
15	1.77	48	18.09
16	2.01	50	19.63
17	2.27	53	22.05
18	2.54	＊55	23.6
19	2.82	56	24.61
20	3.14	＊58	26.4
21	3.46	60	28.26
22	3.80	63	31.16
＊23	4.15	＊65	33.17
24	4.52	＊68	36.3
25	4.91	79	38.49
26	5.30	75	44.16
＊27	5.72	80	50.24
28	6.15	85	56.72
＊29	6.60	90	63.59
30	7.06	95	70.85
＊31	7.54	100	78.50

Notes:

1, The theoretical weights in the list, base on the density of 7.85 g/cm3.

2, The numbers with ＊mean that they are not regulars or we don’t offer them.

-The allowed tolerance of Square Steel:

Length of a side(mm)	Allowed Tolerance
Length of a side(mm)	Group1	Group2	Group3
5.5～7	±0.20	±0.30	±0.40
7～20	±0.25	±0.35	±0.40
20～30	±0.30	±0.40	±0.50
30～50	±0.40	±0.50	±0.60
60～80	±0.60	±0.70	±0.80
80～110	±0.90	±1.0	±1.1
110～150	±1.2	±1.3	±1.1
150～190	――	――	±2.0
190～250	――	――	±2.5

Usage/Applications of Steel Square Bar:

-The Square Steel is normally used as structure steel.

-Row material for other structure steel like steel angles, channels, I-beams, H-beams, etc…

Packaging & Delivery of Steel Square Bar:

-Packing Detail: The products can be packed in bundles by steel wires.

-Marks:

1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.

2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.

-Delivery Detail: 30~45 working days after receive buyer’s T.T. or L/C.

Transportation:

-The products can be delivered by bulk vessel or by container. As for container, products with the length of 6m will be loaded in 20’ container, with 9m or 12m, in 40’ container.

-The maximum quantity of loading of container is 25 tons.

-The products usually are transported to the nearest port from the production place.

Payment:

-Invoicing on theoretical weight or actual weight a s customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L.

3, Negotiable.

Q: The water was poured into the square on how to prevent rust after treatment: Of course, all can be cloth, face sassafras. After the surface has been cleaned, it is better to put rust on the inside and outside surfaces and store them.Then is the steel material after storage should always check, if there is corrosion, corrosion layer should be removed.Finally, the corrosion of the more serious square steel, rust should not be long-term storage, should be used as soon as possible.

Q: How do you use a steel square to mark a line at a specific angle?: To use a steel square to mark a line at a specific angle, you can follow these steps: 1. Place the steel square on the material with one edge aligned with the starting point of the line you want to mark. 2. Adjust the square until the other edge aligns with the desired angle you want to mark. The degree markings on the square can help you find the correct angle. 3. Once the square is in position, hold it firmly and use a pencil or scribe to mark the material along the edge of the square. 4. Double-check the alignment and angle before making the final mark to ensure accuracy. 5. When you are satisfied with the position and angle, press down firmly with the pencil or scribe, ensuring a clear and precise mark. 6. Finally, remove the steel square and continue marking the line if needed, using the initial mark as a guide. Remember to always work carefully and take measurements accurately to achieve the desired angle and maintain accuracy in your marking.

Q: What are some common measurements that can be taken with a steel square?: Some common measurements that can be taken with a steel square include determining right angles, measuring and marking 45-degree angles, checking for level or plumb, and measuring and marking straight lines and parallel lines.

Q: What are some common uses for a steel square in stair construction?: Some common uses for a steel square in stair construction include measuring and marking accurate angles for cutting stringers, determining levelness and plumbness of stairs, and ensuring proper alignment of treads and risers.

Q: Are steel squares rust-resistant?: Yes, steel squares are typically rust-resistant due to the protective coating or alloy composition used in their construction.

Q: How do you use a steel square to find angles for compound mitered corners?: To use a steel square to find angles for compound mitered corners, you would place the square against the workpiece and adjust it until one leg aligns with the desired angle. Then, you can read the corresponding angle measurement on the other leg of the square. This allows you to accurately determine the angles needed for compound mitered corners.

Q: What are some common measurements that can be taken with a steel square in framing?: Some common measurements that can be taken with a steel square in framing include determining the angle of a corner, marking out straight lines, measuring and marking out 45-degree angles, laying out stairs, and finding the center of a board.

Q: Can a steel square be used for checking the plumbness of a post?: Using a steel square to verify the plumbness of a post is not possible. The primary function of a steel square is to measure and mark right angles in woodworking and carpentry. To ensure that a post is plumb, it is necessary to employ a level or plumb bob. A level is equipped with a liquid-filled vial that indicates whether a surface is perfectly vertical or horizontal. On the other hand, a plumb bob consists of a weighted object attached to a string, which is suspended from the top of the post to ascertain its complete plumbness. Both of these tools are exceedingly accurate and dependable for verifying the plumbness of a post, surpassing the capabilities of a steel square.

Q: Can a steel square be used for measuring angles in metal fabrication?: Indeed, angles in metal fabrication can be measured using a steel square. In metal fabrication, steel squares are widely employed for layout and measurement tasks. Possessing a 90-degree angle and multiple markings along the edges, they facilitate precise measurements and angle determination. Although there are more specialized tools like protractors or digital angle finders available for angle measurement, a steel square suffices for most metal fabrication applications, providing reasonably accurate outcomes. To guarantee accurate angle measurements, it is crucial to calibrate the square correctly and employ it accurately.