ASTM A53 Q345B Structural Steel Tube

Structural tube

ASTM A53 Q345B Structural Steel Tube

IMRI ASTM A53 structural tube combine weldability (≤0.05% sulfur) with 345MPa yield strength (20% stronger than standard carbon tubes). Key features include Seam Integrity; Dimensional Accuracy; Corrosion Options.

Email:

sales@imristeel.com

Phone:

+86 13646172523

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Product Detail

Packaging & Delivery

Product Detail

Structural Tube, Seamless Steel Tubes For Structural Purposes is made by heating a high-grade carbon steel billet to a suitably high temperature and then entering a hot rolling mill. This process refines the internal structure and improves strength and toughness for a wide range of applications.

Quick Details

Standard:

GB/T 8162 ASTM A53 EN10210 JIS G 3444

Grade:

Q345B

Thickness:

2.9-60mm

Section shape:

Round

Outer Diameter:

Ф38-457

Place of origin:

Baotou, China(Mainland)

Function:

High-efficiency bearing

Technique:

Hot Rolled, Seamless

Certification:

GB/T 8162 ASTM A53 EN10210 JIS G 3444

Surface Treatmen:

According to customers request

Alloy Or Not:

length:

1-12m

Supply Ability:

( 180.0000 )Ton/Tons per year

End:

Bevel; plain

Application:

Construction engineering; Mechanical manufacturing

Brand:

Baotou steel

Cross-sectional type:

Circular/Square/Rectangular

Dimensional accuracy:

OD tolerance ±0.5%, WT tolerance ±10%

Size and specification

DN	OD		WT
DN	Inch	mm	SCH5S	SCH10S	SCH10	SCH20	SCH30	SCH40	SCH60	SCH80	SCH100	SCH120	SCH140	SCH160	Sth	XS	XXS
50	2″	60.3	1.65	2.77	–	–	–	3.91	–	5.54	–	–	–	8.74	3.91	5.54	11.07
65	2 1/2″	73	2.11	3.05	–	–	–	5.16	–	7.01	–	–	–	9.53	5.16	7.01	14.02
80	3″	88.9	2.11	3.05	–	–	–	5.49	–	7.62	–	–	–	11.13	5.49	7.52	15.24
90	3 1/2″	101.6	2.11	3.05	–	–	–	5.74	–	8.08	–	–	–	–	5.74	8.08	–
100	4″	114.3	2.11	3.05	–	–	–	6.02	–	8.58	–	11.13	–	13.49	6.02	8.56	17.12
125	5″	141.3	2.77	3.4	–	–	–	6.55	–	9.53	–	12.7	–	15.88	6.55	9.53	18.05
150	6″	168.3	2.77	3.4	–	–	–	7.11	–	10.97	–	14.27	–	18.26	7.11	10.97	21.95
200	8″	219.1	2.77	3.76	–	6.35	7.04	8.18	10.31	12.7	15.09	18.26	20.62	23.01	8.18	12.7	22.23
250	10″	273.1	3.4	4.19	–	6.35	7.8	9.27	12.7	15.09	18.26	21.44	25.4	28.58	9.27	12.7	25.4
300	12″	323.9	3.96	4.57	–	6.35	8.38	10.31	14.27	17.48	21.44	25.4	28.58	33.32	9.53	12.7	25.4
350	14″	355.5	3.96	4.78	6.35	7.92	9.53	11.13	15.09	19.05	23.83	27.79	31.75	35.71	9.53	12.7	–
400	16″	406.4	4.19	4.78	6.35	7.92	9.53	12.7	16.66	21.44	26.19	30.96	36.53	40.49	9.53	12.7	–
450	18″	457.2	4.19	4.78	6.35	7.92	11.13	14.27	19.05	23.83	39.36	34.93	39.67	45.24	–	–	–
500	20″	508	4.78	5.54	6.35	9.53	12.7	15.09	20.62	26.19	32.54	38.1	44.45	50.01	–	–	–
550	22″	558.8	4.78	5.54	6.35	9.53	12.7	–	22.23	28.58	34.93	41.28	47.63	53.98	–	–	–
600	24″	609.6	5.54	6.35	6.35	9.53	14.27	17.48	24.61	30.96	38.89	46.02	52.37	59.54	–	–	–

Chemistry Component

Grade	C	Si	Mn	P	S	Nb	V	Ti	Cr	Ni	Cu	N	Mo	B	Als
	Not more than														Not less than
Q345 A	0.20	0.50	1.70	0.035	0.035	–	–	–	0.30	0.50	0.20	0.012	0.10	–	–
Q345 B				0.035	0.035
Q345 C				0.030	0.030	0.07	0.15	0.20							0.015
Q345 D	0.18			0.030	0.025
Q345 E				0.025	0.020
Q390 A	0.20	0.50	1.70	0.035	0.035	0.07	0.20	0.20	0.30	0.50	0.20	0.015	0.10	–	–
Q390 B				0.035	0.035
Q390 C				0.030	0.030										0.015
Q390 D				0.030	0.025
Q390 E				0.025	0.020
Q420 A	0.20	0.50	1.70	0.035	0.035	0.07	0.20	0.20	0.30	0.80	0.20	0.015	0.20	–	–
Q420 B				0.035	0.035
Q420 C				0.030	0.030										0.015
Q420 D				0.030	0.025
Q420 E				0.025	0.020

Tensile test requirements

Steel grade	Tensile strength R_m/MPa	Lower yield strength R_e_L^a/MPa					Elongation after breaking^b A%
		Nominal wallthickness S/mm
		≤16	>16~30			>30
		Not less than
Q345 A	470～630	345		325	295		20
Q345 B
Q345 C							21
Q345 D
Q345 E
Q390 A	490～650	390		370	350		18
Q390 B
Q390 C							19
Q390 D
Q390 E
Q420 A	520～680	420		400	380		18
Q420 B
Q420 C							19
Q420 D
Q420 E

Packaging & Delivery

· Pipe End: Covered HDPE crash cap
· Packing: The steel straps are bundled into hexagonal or rectangular shapes. The number of steel straps bundled varies for different specifications
· Quality control: Provide complete quality traceability documents

Packaging & Shipping

· Minimum order quantity: 5 tons
· Price: FOB at Xin’gang port in Tianjin or CIF or CFR
· Payment: 30% deposit in advance, the balance against the copy of B/L; or 100% L/C, etc
· Lead Time: within 10-25 workdays normally
· Sample: Free sample is available.