Q195 Q215 S235JR S275JR SS330 SPHC Carbon Steel Square Rectangular Pipe Tube

The steel grade of our products have carbon structural steel, carbon tool steel, carbon spring steel, stainless steel, heat-resistant steel, wear-resistant steel, alloy spring steel, alloy structural steel, bearing steel, alloy tool steel, high alloy tool

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Introduction

Square tubes are classified according to their cross-sectional shapes: simple cross-section square tubes: square tubes and rectangular tubes. After the process is processed, it is rolled into strip steel. Generally, the strip steel is unpacked, flattened, crimped, and welded into a round tube, then the round tube is rolled into a square tube, and then cut to the required length. According to the production process, the square tube is divided into: hot-rolled seamless square tube, cold-drawn seamless square tube, extruded seamless square tube, and welded square tube. Rectangular pipes are divided into ultra-thick-walled rectangular pipes, thick-walled rectangular pipes and thin-walled rectangular pipes according to their wall thickness.

Product	Square and Rectangular Steel Pipe
Material	Carbon Steel
Grade	GB: Q195, Q215, Q235A, Q235B, Q235C, Q235D, Q255A, 255B, Q275, Q295A, Q295B, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C, Q390D, Q390E, Q420, Q420B, Q420C, Q420D, Q420E, Q460D, Q460E, Q500D, Q500E, Q550D, Q550E, Q620D, Q620E, Q690D, Q690E EN: S185, S235JR, S275JR, S355JR, S420NL, S460NL S500Q, S550Q, S620Q, S690Q ASTM: Grade B, Grade C, Grade D, A36, Grade 36, Grade 40, Grade 42, Grade 50, Grade 55, Grade 60, Grade 65, Grade 80 JIS: SS330, SPHC, SS400, SPFC, SPHD, SPHE
Standard	ASTM, DIN, ISO, EN, JIS, GB, etc.
Surface	Galvanized, 3PE, painting, coating oil, steel stamp, drilling, etc.
Ends	Plain ends
Specification	OD: 2020-500500mm ; 1020-300500mm, or as required.
	Thickness: 1.0-30.0mm, or as required.
	Length: 2-12m, or as required.
Pipe ends	Plain, Beveled, Threaded, Socket with holes, With PVC clap/ coupling/ clamp
Application	Widely used in machinery manufacturing, construction, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobiles Industry, railway, highway guardrail, container frame, furniture, decoration, steel structure, etc.
Tolerance	±1%
MOQ	1 ton
Supply Ability	5000 tons / month
Lead Time	7-15 working days after the receipt of 30% deposit
Payment Terms	30%T/T Advance + 70% Balance
Price Terms	FOB, CFR, CIF, EXW
Packing	Standard sea-worthy package or as required

Mechanical character & Chemical element of normal material:

Material	Q195	C	Mn	Si	S	P
Chemical		0.06-0.12	0.25-0.50	≤0.30	≤0.050	≤0.045
Composition		Tensile strength: 315-430(Mpa)
(%)		Yield strength:195(Mpa)
		Elongation:33
	Q235	C	Mn	Si	S	P
		0.12-2.0	0.3-0.70	≤0.30	≤0.045	≤0.045
		Tensile strength: 375-460(Mpa)
		Yield strength:235(Mpa)
		Elongation:26
	Q345	C	Mn	Si	S	P	V
		≤0.20	≤1.70	≤0.55	≤0.040	≤0.040	0.02-0.15
		Tensile strength: 470-630(Mpa)
		Yield strength:345(Mpa)
		Elongation:21

Rectangular Hollow Section				Square Hollow Section
Size	Thickness	Size	Thickness	Size	Thickness
mm	mm	mm	mm	mm	mm
50 X 25	2	120 X 40	3	20 x 20	2
50 X 25	2.5	120 X 40	3.6	20 x 20	2.5
50 X 25	3	120 X 40	4	25 x 25	2
50 X 30	2.5	120 X 40	5	25 x 25	2.5
50 X 30	3	120 X 40	6	25 x 25	3
50 X 30	3.2	120 X 40	6.3	30 x 30	2.5
50 X 30	4	120 X 60	3	30 x 30	3
60 X 40	2.5	120 X 60	3.6	40 x 40	2
60 X 40	3	120 X 60	4	40 x 40	2.5
60 X 40	3.2	120 X 60	5	40 x 40	3
60 X 40	4	120 X 60	6	40 x 40	4
80 X 40	3	120 X 60	6.3	50 x 50	2
80 X 40	3.2	120 X 80	3	50 x 50	2.5
80 X 40	4	120 X 80	4	50 x 50	3
80 X 60	2.5	120 X 80	5	50 x 50	4
80 X 60	3	120 X 80	6	50 x 50	5
80 X 60	3.6	120 X 80	6.3	60 x 60	3
80 X 60	4	150 X100	3	60 x 60	4
80 X 60	5	150 X100	4	60 x 60	5
90 X 50	2.5	150 X100	5	70 x 70	3
90 X 50	3	150 X100	6	70 x 70	3.6
90 X 50	3.6	150 X100	6.3	70 x 70	5
90 X 50	4	160 X 80	3	80 x 80	3
90 X 50	5	160 X 80	4	80 x 80	3.6
100 X 40	3	160 X 80	5	80 x 80	5
100 X 40	3.6	160 X 80	6	80 x 80	6
100 X 40	4	160 X 80	6.3	90 x 90	3
100 X 40	5	200 X 100	4	90 x 90	3.6
100 X 50	3	200 X 100	5	90 x 90	5
100 X 50	3.6	200 X 100	6	90 x 90	6
100 X 50	4	200 X 100	6.3	100 x 100	4
100 X 50	5	200 X 100	8	100 x 100	5
100 X 50	6	200 X 100	10	100 x 100	6
100 X 50	6.3	200 X 100	12.5	100 x 100	8
100 X 60	3	200 X 100	16	100 x 100	10
100 X 60	3.6	250 X 150	6.3	120 x 120	5
100 X 60	4	250 X 150	8	120 x 120	6
100 X 60	5	250 X 150	10	120 x 120	8
100 X 60	6	250 X 150	12.5	120 x 120	10
100 X 60	6.3	250 X 150	16	150 x 150	5
100 X 80	3	300 X 200	6.3	150 x 150	6
100 X 80	3.6	300 X 200	8	150 x 150	8
100 X 80	4	300 X 200	10	150 x 150	10
100 X 80	5	300 X 200	12.5	180 x 180	6
100 X 80	6	300 X 200	16	180 x 180	8
100 X 80	6.3	400 X 200	10	180 x 180	10
		400 X 200	12.5	180 x 180	12.5
		400 X 200	16	200 x 200	6
		450 X 250	10	200 x 200	8
		450 X 250	12.5	200 x 200	10
		450 X 250	16	200 x 200	12.5
				250 x 250	8
				250 x 250	10
				250 x 250	12.5
				300 x 300	8
				300 x 300	10
				300 x 300	12.5

Chemical & Mechanical Properties of Carbon Steel Square Pipes

Standard	Grade	Chemical Components (%)					Mechanical Properties
Standard	Grade	C	Si	Mn	P	S	Tensile Strength (Mpa)	Yield Strength(Mpa)
ASTM AS3	A	≤0.25	-	≤0.95	≤0.05	≤0.06	≥330	≥205
ASTM AS3	B	≤0.30	-	≤1.2	≤0.05	≤0.06	≥415	≥240
ASTM A106	A	≤0.30	≥0.10	0.29-1.06	≤0.035	≤0.035	≥415	≥240
ASTM A106	B	≤0.35	≥0.10	0.29-1.06	≤0.035	≤0.035	≥485	≥275
ASTM A179	A179	0.06-0.18	-	0.27-0.63	≤0.035	≤0.035	≥325	≥180
ASTM A192	A192	0.06-0.18	≤0.25	0.27-0.63	≤0.035	≤0.035	≥325	≥180
API 5L PSL1	A	0.22	-	0.9	0.03	0.03	≥331	≥207
	B	0.28	-	1.2	0.03	0.03	≥414	≥241
	X42	0.28	-	1.3	0.03	0.03	≥414	≥290
	X46	0.28	-	1.4	0.03	0.03	≥434	≥317
	X52	0.28	-	1.4	0.03	0.03	≥455	≥359
	X56	0.28	-	1.4	0.03	0.03	≥490	≥386
	X60	0.28	-	1.4	0.03	0.03	≥517	≥448
	X65	0.28	-	1.4	0.03	0.03	≥531	≥448
	X70	0.28	-	1.4	0.03	0.03	≥565	≥483
API 5L PSL2	B	0.24	-	1.2	0.025	0.015	≥414	≥241
	X42	0.24	-	1.3	0.025	0.015	≥414	≥290
	X46	0.24	-	1.4	0.025	0.015	≥434	≥317
	X52	0.24	-	1.4	0.025	0.015	≥455	≥359
	X56	0.24	-	1.4	0.025	0.015	≥490	≥386
	X60	0.24	-	1.4	0.025	0.015	≥517	≥414
	X65	0.24	-	1.4	0.025	0.015	≥531	≥448
	X70	0.24	-	1.4	0.025	0.015	≥565	≥483
	X80	0.24	-	1.4	0.025	0.015	≥621	≥552

Product Surface: