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Black square tube is a type of pipe, usually made of materials such as carbon steel, stainless steel, or scrap metal. Its shape is square or rectangular, hence its name. Black square tubes have good compressive performance, bending resistance, tensile resistance, and wear resistance, and are widely used in fields such as construction, transportation, and agriculture.
Product Parameters

Product name	Black Steel Hollow Section Square Rectangular Pipes
Material	S275J0H,S355JR,S355J0H,S355J2H,A36,SS400,0195,Q235,Q345
Surface treatment	Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted
Shape	Square or rectangular
Thickness	0.4-25mm or as required
Length	1-12m or as required
0D(outer diameter)	Square 1010-600600mm, Sectangular1015 8001100mm
Type	Weld or Seamless
Processing Service	Bending, Welding, Decoiling, Cutting, Punching, Polishing or as customer's request
Usage	Construction/ building materials steel pipe
	Structure steel pipe
	Solar structure component steel pipe
	Fence post steel pipe
	Greenhouse frame steel pipe
Packing	1 .Big OD:in bulk 2.Small 0D:packed by steel strips 3.woven cloth with 7 slats 4.according to the reguirements of customers
Standards	BS1139-1775,EN1039,EN10219 JIS G3444:2004, GB/T3091-2001,BS1387-1985, DINEN10025. ASTM A53 SCH40/80/STDBS-EN10255-2004
Delivery Time	Fast delivery ,within 10 days after receiving the deposit
Remark	1.Payment terms :T/T.L/C 2. Terms of trade : FOB .CFR,CIF ,DDPEXW 3. Delivery time : Within 25 days.
Sample	Free Sample

Product Specifications

Type	Specifications （mm）	Thickness （mm）
Square tube	1010-1515	0.24-0.31
	1717-5050	0.24-0.31
	1717-5050	0.33-0.38
	1717-5050	0.40-2.0
	1717-5050	0.24-0.31
	1717-5050	0.33-0.38
	1717-5050	0.40-2.0
	6060-250250	0.5-3.0
Rectangular Pipe	1020-7545	0.24-0.31
	1020-7545	0.33-0.38
	1020-7545	0.40-2.0
	1020-7545	0.24-0.31
	1020-7545	0.33-0.38
	1020-7545	0.40-2.0

Applications
Black steel square pipes are often used for glass curtain walls, power towers, communication grids, water and gas transmission, wire sleeves, houses, bridges, metal structures, power transmission, and other aspects due to their excellent performance.
Q195 Q235 Q345 ASTM A500 A53 A106 A335 P11 API 5L ERW Dark Hollow Square / Rectangular Tube Cold Rolled Black Carbon Steel Pipe

Project Cases

Additional Processing Technology
Black square pipes can be treated with additional processes such as cutting, punching, labeling, oiling, welding, bending, and beveling.

Product Packaging

Product Transportation

China	America	Germany	Japan	France	Britain	International
GB3077	AlSI	DIN	JIS	NE	BS	ISO
20Mn2	1320 1221	20Mn5	SMn21	20M5	150M19	-
30Mn2	1330	30Mn5	SMn24	32M5	150M28	-
35Mn2	1335	36Mn5	SMnl	35M5	150M36	-
40Mn2	1340 1341	-	SMn2	40M5	-	-
45Mn2	1345	46Mn7	SMn3	45M5	-	-
50Mn2	1052	50Mn7	-	55M5	-	-
20MnV	-	20MnV6	-		-	-
30Mn2MoW	-	--	-		-	-
27SiMn	-	27MnSi5	-		-	-
35SiMn	-	37MnSi5	-	38MS5	-	-
42SiMn	-	38MnSi4 46MnSi4	-	38MS5	-	-
20SiMn2MoV	-	-	-	-	-	-
25SiMn2MoV	-	-	-	-	-	-
37SiMn2MoV	-	-	-	-	-	-
40B	14B35	35B2	-	-	-	-
45B	50B46H	45B2	-	-	-	-
50B	14B50	-	-	-	-	-
4OM∏B	15B41	-	-	-	-	-
45MnB	15B48 50B44	-	-	-	-	-
20Mn2B	-	-	-	-	-	-
20MnMoB	80B20	-	-	-	-	-
15MnVB	-	-	-	-	-	-
-	-	-	-	-	-	-
-	-	-	-	-	-	-
20MnVB	-	-	-	-	-	-
40MnVB	-	-	-	-	-	-
20MnTiB	-	-	-	-	-	-
25MnTiBRE	-	-	-	-	-	-
2OSiMnVB	-	-	-	-	-	-
15Cr	5015 5115	15Cr3	SCr21	12C3	523A14 523M15	-
15CrA	-	-	-	-	-	-
20Cr	5120	20Cr4	SCr22	18C3 18C4	527A19 527M20	683/11 20Cr4 20CrS4
30Cr	5130	28Cr4	SCr2	28C4 32C4	530A30 530A32	-
35Cr	5135	34Cr4 37Cr4	SCr3	38C4	530A36	683/8 3、 3a、 3b
40Cr	5140	38Cr4 41Cr4	SCr4	42C4	530A40 530M40	683/1 4、 4a^ 4b
45Cr	5145	42Cr4	SCR5	45C4	-	-
50Cr	5150 5152	-	-	50C4	En48	-
38CrSi	-	-	-	-	-	-
12CrMo	4119	13CrMo44	-	12CD4 15CD2	-	-
15CrMo	ASTM A-387Gr. B	15CrMo5 16CrMo44	SCM21	15CD4. 05	BS1653	-
20CrMo	4118	20CrMo5 22CrMo4	SCM22	18CD4 20CD4	CDS 12 CDSllO	-
30CrMo	4130	25CrMo4	SCM2	30CD4	CDS 13	-
30CrMoA	-	32CrMol2 3ICRMo12	-	-	-	-
35CrMo	4135 4137	34CrMo4 35CrMo4	SCM3	35CD4	78A37	683/1 C35ea C35eb
42CrMo	4140 4142	41CrMo4 42CrMo4	SCM4	40CD4 42CD4	708M40 708A42 709M40	683/1 3
12CrMoV	-	-	-	-	-	-
35CrMoV	-	35CrMoV5	-	-	-	-
12CrlMoV	-	13CrMoV4.2	-	-	-	-
25Cr2MoVA	-	24CrMoV5.5	-	-	-	-
25Cr2MolVA	-	-	-	-	-	-
20CR3MoWVA	-	21CrVMoW12	-	-	-	-
38CrMoΛl	6370 (ΛMS)	34CrAlMo5 41CrAlMo7	SACM645	40CAD6.12	905M39	683/10 41CrAlMo74
20CrV	6120	22CrV4	-	22CrV4	-	-
40CrV	6140	42CrV	-	42CrV4	-	-
50CrVA	6150	50CrV4	SUPlO	50CV4	735A50	-
15CrMn	-	16MnCr5	-	16MC5	-	-
20CrMn	5120	20MnCr5	SMC21	20MC5	-	-
40CrMn	5140	-	SMC3	-	-	-
20CrMnSi	-	-		-	-	-
25CrMnSi	-	-	SMKl	-	-	-
30CrMnSi	-	-	-	-	-	-
30CrMnSiA	-	-	-	-	-	-
35CrMnSiA	-	-	SMK2	-	-	-
20CrMnMo	4119	20CrMo5	SCM23	-	-	-
40CrMnMo	4140	-	-	-	-	-
20CrMnTi	-	-	SMK22	-	-	-
30CrMnTi	-	30MnCrTi4	-	-	-	-
20CrNi	3120	20NiCr6	-	20NC6	637A16 637M17	-
40CrNi	3140	46NiCr6	SNCl	35NC6	640A35 640M40	-
45CrNi	3145	45NiCr6	-	-	-	-
50CrNi	3150	-	-	-	-	-
12CrNi2	3115	14NiCrlO	SNC21	IONCll 14NC11	-	-
12CrNi3	3310	13NiCrl2	SNC22	10NC12 14NC12	655A12 655M13	-
20CrNi3	-	22NiCrl4	-	20NC11	-	-
30CrNi3	-	28NiCrlO 31NiCrl4	SNC2	30NC11 30NC12	-	-
37CrNi3	-	35NiCrl8	SNC3	35NC15	-	-
12Cr2Ni4	E3310	14NiCrl8	-	12NC15	-	-
20Cr2Ni4	E3316	22NiCrl4	-	20NC14	659A15 659M15	-
20CrNiMo	8620 8720	20NiCrMo2 21NiCrMo2	-	20NCD2	805A20 805M20	-
40CrNiMoA	4340 9840	36NiCrMo4 40NiCrMo6	SNCM8	35NCD5 40NCD3	817M40 816M40	-
45CrNiMoVA	4437	-	SNCM9	-	-	-
18Cr2Ni4WA
25Cr2Ni4WA

FAQ

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What are your main products?

Our main products are stainless steel products, galvanized steel products, aluminum profiles and lead products. In addition, we also have steel pipes, steel plates and other related steel products.

Do you provide customized product services?

Of course, our professional R&D team can design and produce the products you need according to your specifications and drawings. For example: special size, special control, OEM, etc.

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Please provide product specifications such as material, size, quantity and other requirements. We usually quote within 6 hours, and steel prices fluctuate with the market every day. Our prices are very competitive because we have a stable supply chain. If you would like to get a price as soon as possible, please call us or let us know by email so that we can prioritize your inquiry.

Are you a manufacturer?

Our main products are stainless steel products and galvanized steel products. Our own factory, coupled with our many years of experience in the domestic steel market and long-term cooperation with upstream and downstream suppliers, stable prices, stable quality and stable supply capabilities allow us to have great advantages in stainless steel and galvanized products. At the same time we also have product resources of carbon steel products and color-coated coils, I believe this will also make you satisfied.

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★★★★★

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Keywords

Black square tube