Complaint
Square tubes is a form of tube type, people have a different name on it, called the rectangular tubes, rectangular tubes, square tubes, welded square tube, because it has a lot of kinds of material of material can make the tube body, usually square tube is formed after unpacking, kaiping, bending strip welding pipe, again by the mechanism of rolling into a square tube.
Galvanized square steel pipe, rectangular steel pipe, steel hollow section, divided according to the shape of the section, is a name for square pipe and rectangular pipe. It is made of strip steel that has been processed and rolled. Generally, the strip is unpacked, flattened, coiled, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length. Square rectangular tube is also called cold-formed hollow section steel, referred to as square tube and rectangular tube.
| Item | Black square hollow section pipe |
| material | Q235B/Q345b/Ss400/A36/St37 |
| certifications | ISO9001 /SGS |
| standard | ASTM BS GB API |
| size(dia) | 15*15mm-300*300mm |
| item | black rectangular section pipe |
| size | 10*20mm-200*400mm |
| technique | welded ,ERW ,cold rolled .hot rolled |
| surface | Bared, Galvanized, Oiled,Or Other Anti-corrosive Treatment. We can produce other specifications according to customers requirements. |
| packaging | 1.Big OD:in bulk 2.Small OD:packed by steel strips 3. 20"GP:5.85*2.2*2.2 40"GP:11.85*2.2*2.2 Black steel pipe: oiled/painted, in bundles and tarpaulin outside According to the requirements of customers |
| inspection | With Chemical Composition and Mechanical Properties Analysis; Hydrostatic Test, Dimensional and Visual Inspection, Also With Nondestructive Inspection |
| Usage/Application | Mechanical & manufacture, Steel structure, Shipbuilding, Bridging ,Automobile chassis Industrial water lines/plant piping, Vehicular chassis and frames, Idlers & belt conveyorsAgriculture and Irrigation, Scaffoldings, Electrical Cable conduits, Cooling towers, Antenna and Telecom Towers, Cold storages, Tabular polesFire Protection Systems, HVAC, Plumbing,Fabrication industry, |
| main market | North America South America Eastern Europe Southeast Asia Africa Oceania Mid East Eastern Asia Western Europe Central America Northern Europe Southern Europe South Asia Domestic Market |
| country of origin | china |
| Productivity | 5000tons per month |
| delivery time | within 15 working days after receiving the payment or 100% Irrevocable L/C at sight |
Square and Rectangular Steel Pipe size chart | ||
Square Hollow Section | Rectangular Hollow Section | Thickness |
20*20 25*25 30*30 | 20*40 30*40 | 1.2-3.0 |
40*40 50*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 |
60*60 | 50*70 40*80 | 1.2-5.75 |
70*70 80*80 75*75 90*90 100*100 | 60*80 50*80 100*40 120*80 | 1.5-5.75 |
120*120 140*140 150*150 | 160*80 100*150 140*80 100*180 200*100 | 2.5-10.0 |
160*160 180*180 200*200 | 200*150 250*150 | 3.5-12.0 |
250*250 300*300 400*200 350*350 350*300 | 250*200 300*200 350*200 350*250 450*250 400*300 500*200 | 4.5-15.75 |
400*400 280*280 450*300 450*200 | 400*350 400*250 500*250 500*300 400*600 | 5.0-20.0 |
