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Hot-Dip Galvanized Square Steel Tube Manufacturer

We manufacture hot-dip galvanized square steel tubes in standard and custom sizes. Different wall thicknesses, steel grades and zinc coating weights are available, with ASTM, EN, JIS and GB.

Stock sizes can be shipped within 8 days after payment is received. We also offer custom lengths, cutting and export packing. For a quote, send us the size, wall thickness, quantity and destination port.

Surface Finish Hot-Dip Galvanized
Square Tube Size 10 x 10 mm - 600 x 600 mm
Wall Thickness 0.5-20 mm
Zinc Coating 220-260 g/m2 or Custom
Length 6-12 m or Custom
Standard ASTM / EN / JIS / GB

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product details

Specifications of Hot-Dip Galvanized Square Steel Tubes

Hot-dip galvanized square steel tubes are produced from carbon steel square tubes and then immersed in molten zinc to form a protective coating. This coating helps reduce rust during storage, transportation, and long-term outdoor use.

Tube size, wall thickness, length, and zinc coating can be supplied according to order requirements. Common applications include steel structures, fences, gates, agricultural facilities, and general fabrication. Please send your required size, thickness, quantity, and destination port for a quotation.

Standard	ASTM/GB/JIS/EN Standard
Standard	GB/T6728-2002,GB/T6725-2002,GBT3094-2000,JG 178-2005,ASTM A500,JIS G3466,EN10210 etc.
Diameter	Square pipe:1010mm-600600mm Rectangular pipe:2040mm~400700mm
Thickness	Square and rectangular pipe:0.5~20mm
Length	Fixed length in 6-12m or as per specified
Standard	Hollow section:ASTM A500,EN10219,EN10210,JIS3466,GB/T6728
Material	Gr.A,Gr.B,Gr.C;S235,S275,S355;A36,SS400;Q195,Q235,Q345,etc.
Finish of pipe	Hot dipped galvanized with zinc 220~260g/m2Pre-Galvanized with zinc 30~150g/m2 Painted with black lvarnish lacquer;
Finish of pipe	Oil on the surface to prevent rust; Bare pipe without painting:
Pipe End	Plain end/Bevel end;Groove end;Joint with flange; Threaded on two ends,one end with coupling,one end with plastic cap
Marking	As per client requirement or mill tandard Painting method:Spray white paint
Packing	OD not less than 273mm:Loose packing,piece by piece.
Packing	OD less than 273mm:In hexagonal seaworthy bundles packed by steel strips. Small sizes nested into big sizes.

Square Steel Pipe
L1 (mm)	L2(mm)	Thickness(mm)	L1 (mm)	L2(mm)	Thickness(mm)
10	10	0.3-1.0	115	115	2.0-12.0
12	12	0.3-1.0	120	120	2.0-16.0
15	15	0.4-1.4	135	135	2.0-16.0
10	10	0.5-1.5	140	140	2.0-18.0
18	18	0.4-1.5	150	150	2.0-20.0
20	20	0.5-2.0	160	160	3.0-20.0
25	25	0.5-2.5	180	180	3.0-20.0
28	28	0.5-1.5	200	200	4.0-22.0
30	30	0.5-4.0	220	220	4.0-22.0
35	35	0.6-1.8	240	240	4.0-22.0
40	40	0.6-6.0	250	250	4.0-22.0
50	50	07-6.0	260	260	4.0-25.0
60	60	0.7-6.0	280	280	6.0-25.0
70	70	0.9-6.0	300	300	6.0-25.0
75	75	1.0-7.5	350	350	6.0-25.0
80	80	1.0-8.0	400	400	6.0-25.0
90	90	2.0-10.0	500	500	6.0-25.0
100	100	1.5-12.0	600	600	6.0-25.0
110	110	2.0-12.0

Rectangular Steel Pipe
L1 (mm)	L2(mm)	Thickness(mm)	L1 (mm)	L2(mm)	Thickness(mm)
18	10	0.4-0.8	150	80-100	3.0-14.0
20	8-14	0.4-2.0	160	80-130	5.0-16.0
25	12-20	0.5-1.5	175	100-150	5.0-20.0
30	10-20	0.5-2.5	180	80-150	3.0-20.0
38	25	0.7-1.5	200	80-160	3.0-20.0
40	10-30	0.7-3.75	220	120-200	3.0-25.0
45	20	1.5-4.0	250	100-225	4.0-25.0
50	10-40	0.6-4.0	260	90-175	6.0-25.0
60	20-40	0.6-5.0	280	120-240	6.0-25.0
70	20-50	1.0-6.0	300	100-250	4.0-24.0
75	50-45	2.0-8.0	310	210	7.0-25.0
80	40-60	0.7-0.8	320	200	7.0-25.0
90	50-60	2.0-8.0	350	150-300	7.0-25.0
100	20-80	1.0-9.0	360	200-350	7.0-25.0
110	60-75	3.0-10.0	400	150-300	7.0-25.0
120	60-100	3.0-14.0	450	150-350	7.0-25.0
125	90-100	3.0-143.0	450	150-350	7.0-25.0
130	120	3.0-14.0	600	200	8.0-25.0
140	80	3.0-10.0

Features of Carbon Square And Rectangular Tubes

High Strength & Exceptional Load-Bearing Capacity

Carbon steel boasts inherent high tensile strength. Once formed into square or rectangular pipes, their structural design enables efficient distribution and transfer of external forces, resisting deformation and damage effectively. This renders them a dependable support solution for both building frameworks and mechanical structures.
Versatile Specifications & Customizable Sizing

These pipes come in a rich selection of standard specifications. Key dimensions like side lengths and wall thicknesses can also be flexibly tailored and customized to match the unique design and application requirements of different engineering projects.
Excellent Machinability

The pipes feature outstanding processing performance, allowing for smooth execution of cutting, welding, bending and other fabrication procedures to meet diverse on-site construction needs.
Cost-Effective Advantages

Compared with pipes made from certain special alloy materials, carbon steel square and rectangular pipes enjoy lower raw material costs. Their production process is also highly mature, with high manufacturing efficiency that effectively keeps overall project costs in check.
Eco-Friendly Recyclability

Carbon steel materials are highly recyclable. When these pipes reach the end of their service life or are removed during engineering renovations, they can be easily recovered. After undergoing remelting and reprocessing, they can be transformed into new steel products, fully aligning with the principles of sustainable development.

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Hot-Dip Galvanized Square Steel Tube Manufacturer

Specifications of Hot-Dip Galvanized Square Steel Tubes

Features of Carbon Square And Rectangular Tubes

High Strength & Exceptional Load-Bearing Capacity

Versatile Specifications & Customizable Sizing

Excellent Machinability

Cost-Effective Advantages

Eco-Friendly Recyclability

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