Q235B 45# Cold Rolled Carbon Steel Flat Bar

Q235B 45# Cold Rolled Carbon Steel Flat Bar

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Payment Type:	T/T,D/P,L/C
Incoterm:	FOB,CIF,EXW,CFR
Transportation:	Ocean,Land,Express
Port:	Qingdao,Shanghai,Tianjin

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Product Description

Product Attributes

Packaging & Delivery

Product Description

Product Attributes

Model No.: Q235B 45#

Standard: Aisi, Astm, Bs, Din, Gb

Place Of Origin: China

Production Process: Cold Drawn

Special Steel: Mold Steel

Tolerance: ±1%

Processing Service: Bending, Welding, Decoiling, Punching, Cutting

Packaging & Delivery

Selling Units	:	Ton
Package Type	:	Standard marine packaging, or as required by the customer
Picture Example	:

Flat Steel Bar

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Product Description

Flat Steel , refers to 12-300mm wide, 3-60mm thick, rectangular section and slightly with a blunt edge of steel. Flat steel can be finished steel, can also be used as a blank for welding pipe and thin slab for rolling sheet. Main uses: flat steel as a finished material can be used for hoop iron, tools and mechanical parts, as building frame structure, escalator.

Low carbon flat steel compared to traditional steel plates

1. Special product specifications. The thickness is 8-50mm, the width is 150-625mm, the length is 5-15m, and the product specifications are denser, which can meet the needs of users. It can be used directly instead of the middle plate without cutting and can be welded directly.

2. The surface of the product is smooth. The high-pressure water descaling process is used twice in the process to ensure the surface of the steel is smooth and clean.

3. The sides are vertical, and the rhomboids are clear. The two vertical rollings in finishing rolling ensure good verticality on both sides, clear corners, and good surface quality on the sides.

4. The size of the product is accurate, three points difference, the same level difference is better than the steel plate standard; the product is straight and the shape is good. Finishing rolling adopts continuous rolling process and automatic looper automatic control to ensure that no steel is piled and no steel is pulled. The product has high dimensional accuracy. The tolerance range, three point difference, same strip difference, sickle bend, and other parameters are better than the medium plate. Good degree. Cold-shear cutting, high precision in length sizing.

5. The material of the product adopts the national standard, which is the same as the steel plate. Quality and technical standards are organized according to YB / T4212-2010 standards (Q345B / Q235B refer to GB / T1591-94 and GB / T700-06 standards, respectively)

Product Parameters

Carbon Steel Flat Bar Specification:

Commodity	Cold Drawn Flat Rectangle Bar, Carbon Steel/Mild Steel/MS Rectangle Bar/Flat Steel Rectangular Bar
Standard	GB/T 3078-2019, GB/T 905-1994
Grade	Carbon Steel	A36, SS400, S235JR, Q235, ST37, ST52, SAE 1045 ,S45C, C45 Etc.
	Alloy Steel	SAE 5120, 20Cr, Scr 420H, 20Cr4, SAE 5140, 40Cr, SCr440, 520M40, SAE 4130, 30CrMo, SCM430, 42CrMo4, 708A42, 708M40, SAE 4340, 40CrNiMoA
Width	12-200mm
Thickness	3-30mm
Length	3-12m Random Length Or As Per Client'Request
Technique	Hot Rolled/Cold Drawn
Surface	Bright, Pickled,Black or as per required
Packing	In Bundle With The Steel Strip
Container Size	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	Used in home appliances construction, machinery manufacturing, container manufacturing, shipbuilding, bridges, etc. Hardware tools, auto parts, standard parts, fasteners common shaft, light industry, bicycles, cars, motorcycles, transformers etc.
Advantages	greater size accuracy, straightness and increased tensile and yield strength as well as improved machinability

W (mm)	Thickness (mm)
	4	5	6	7	8	9	10	11	12	14	16	18	20	22	25	28	30
	Weight (kg/m)
12	0.38	0.47	0.57	0.66	0.75
14	0.44	0.55	0.66	0.77	0.88
16	0.5	0.63	0.75	0.88	1	1.15	1.26
18	0.57	0.71	0.85	0.99	1.13	1.27	1.41
20	0.63	0.79	0.94	1.1	1.26	1.41	1.57	1.73	1.88
22	0.69	0.86	1.04	1.21	1.38	1.55	1.73	1.9	2.07
25	0.79	0.98	1.18	1.37	1.57	1.77	1.96	2.16	2.36	2.75	3.14
28	0.88	1.1	1.32	1.54	1.76	1.98	2.2	2.42	2.64	3.08	3.53
30	0.94	1.18	1.41	1.65	1.88	2.12	2.36	2.59	2.83	3.36	3.77	4.24	4.71
32	1.01	1.25	1.5	1.76	2.01	2.26	2.54	2.76	3.01	3.51	4.02	4.52	5.02
35	1.10	1.37	1.65	1.92	2.20		2.75		3.30	3.95
36	1.13	1.41	1.69	1.97	2.26	2.51	2.82	3.11	3.39	3.95	4.52	5.09	5.65
40	1.26	1.57	1.88	2.2	2.51	2.83	3.14	3.45	3.77	4.4	5.02	5.65	6.28	6.91	7.85	8.79
45	1.41	1.77	2.12	2.47	2.83	3.18	3.53	3.89	2.24	4.95	5.65	6.36	7.07	7.77	8.83	9.89	10.6
50	1.57	1.96	2.36	2.75	3.14	3.53	3.93	4.32	4.71	5.5	6.28	7.07	7.85	8.64	9.81	10.99	11.78
55	1.73	2.16	2.59	3.02	3.45		4.32		5.19	6.05
56	1.76	2.2	2.64	3.08	3.52	3.95	4.39	4.83	5.27	6.15	7.3	7.91	8.79	9.67	10.99	12.31	13.19
60	1.88	2.36	2.83	3.3	3.77	4.24	4.71	5.18	5.65	6.59	7.54	8.48	9.42	10.36	11.78	13.19	14.13
63	1.98	2.47	2.97	3.46	3.95	4.45	4.94	5.44	5.93	6.92	7.91	8.9	9.69	10.88	12.36	13.85	14.34
65	2.04	2.55	3.06	3.57	4.08	4.59	5.1	5.61	6.12	7.14	8.16	9.19	10.21	11.23	12.76	14.29	15.31
70	2.2	2.75	3.3	3.85	4.4	4.95	5.5	6.04	6.59	7.69	8.79	8.89	10.99	12.09	13.74	15.39	16.49
75	2.36	2.94	3.53	4.12	4.71	5.3	5.89	6.48	7.07	8.24	9.42	10.6	11.78	12.95	14.72	16.49	17.66
80	2.51	3.14	3.77	4.4	5.02	5.65	6.28	6.91	7.54	8.79	10.05	11.3	12.56	13.82	15.7	17.58	18.84
85	2.67	3.34	4	4.67	5.34	6.01	6.67	7.34	8.01	9.34	10.68	12.01	13.35	14.68	16.68	18.68	20.02
90	2.83	3.53	4.24	4.95	5.56	6.36	7.07	7.77	8.48	9.89	11.3	12.72	14.13	15.54	17.65	19.78	21.2
95	2.98	3.73	4.47	5.22	5.97	6.71	7.46	8.2	8.95	10.44	11.93	13.42	14.92	16.41	18.84	20.88	22.37
100	3.14	3.93	4.71	5.5	6.28	7.07	7.85	8.64	9.42	10.99	12.56	14.13	15.7	17.27	19.63	21.98	23.55
105	3.3	4.12	4.95	5.77	6.59	7.42	8.24	9.07	9.89	11.54	13.19	14.84	16.49	18.18	20.61	23.08	24.73
110	3.45	4.32	5.18	6.04	6.91	7.77	8.64	9.5	10.36	12.09	13.82	15.54	17.27	19	21.59	24.18	25.91
120	3.77	4.71	5.65	6.59	7.54	8.48	9.42	10.36	11.3	13.19	15.07	16.96	18.84	20.72	23.55	26.38	28.26
125	3.93	4.91	5.89	6.67	7.85	8.83	9.81	10.76	11.78	13.74	15.7	17.66	19.63	21.5	24.53	27.48	29.44
130	4.08	5.1	6.12	7.14	8.16	9.18	10.21	11.23	12.25	14.29	16.33	18.87	20.41	22.45	25.51	28.57	30.62
140	4.4	5.5	6.59	7.69	8.79	9.89	10.99	12.09	13.19	15.39	17.58	19.78	21.98	24.18	27.48	30.77	32.97
150	4.71	5.89	7.07	8.24	9.42	10.6	11.78	12.95	14.13	16.49	18.84	21.2	23.55	25.91	29.44	32.97	35.33
160	5.02	6.28	7.54	8.79	10.05	11.3	12.56	13.82	15.07	17.58	20.1	22.61	25.12	27.63	31.4	35.17	37.63
170	5.34	6.67	8.01	9.34	10.68	12.01	13.35	14.68	16.01	18.68	21.35	24.02	26.09	29.36	33.36	37.37	40.04
180	5.65	7.07	8.48	9.89	11.3	12.72	14.13	15.54	16.96	19.78	22.61	25.43	28.26	31.09	35.33	39.56	42.39
190	5.97	7.46	8.95	10.44	11.93	13.42	14.92	16.41	17.9	20.88	23.86	26.85	29.83	32.81	37.29	41.76	44.75
200	6.28	7.85	9.42	10.99	12.56	14.13	15.7	17.27	18.84	21.98	25.12	28.26	31.4	34.54	39.25	43.96	47.1