| SIZE | THICKNESS | PCS/BUNDLE | SIZE | THICKNESS | PCS/BUNDLE | ||||
| DEPTH | WIDTH | MIN | MAX | DEPTH | WIDTH | MIN | MAX | ||
| MM | MM | MM | MM | MM | MM | MM | MM | ||
| 20 | 20 | 1.5 | 2.5 | 100 | 20 | 40 | 1.5 | 3 | 120 |
| 30 | 30 | 1.5 | 3 | 100 | 30 | 50 | 1.7 | 3 | 104 |
| 40 | 40 | 1.7 | 4 | 100 | 40 | 60 | 1.5 | 4 | 70 |
| 50 | 50 | 2 | 5 | 64 | 40 | 80 | 1.5 | 5 | 50 |
| 60 | 60 | 2 | 5 | 49 | 50 | 100 | 2 | 6 | 32 |
| 80 | 80 | 2 | 5 | 25 | 60 | 120 | 2.5 | 6 | 28 |
| 100 | 100 | 2.5 | 6 | 25 | 100 | 150 | 2.5 | 7.75 | 16 |
| 120 | 120 | 2.5 | 6 | 16 | 80 | 160 | 2.5 | 7.75 | 18 |
| 150 | 150 | 2.5 | 8 | 16 | 100 | 200 | 2.5 | 8 | 12 |
Square and rectangular cold formed hollow steel, referred to as square pipe and rectangular pipe, code F and J respectively 1. The allowable deviation of the wall thickness of the square rectangular pipe shall not exceed plus or minus 10% of the nominal wall thickness when the wall thickness is less than 10mm, and plus or minus 8% of the wall thickness when the wall thickness is more than 10mm, except the wall thickness of the corner and weld area. 2. The usual delivery length of square tube is 4000mm-12000mm, mostly 6000mm and 12000mm. Square rectangular pipe is allowed to deliver not less than 2000mm short and non-fixed size products, can also be delivered in the form of interface pipe, but the customer should be in use when the interface pipe should be removed. The weight of short size and non-fixed size products shall not exceed 5% of the total delivery, for the theoretical weight of more than 20kg/m square pipe shall not exceed 10% of the total delivery 3. The bending degree of the square tube shall not be greater than 2mm per meter, and the total bending degree shall not be greater than 0.2% of the total length. Application: Widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration and steel structure fields. Used in engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, household appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle rack, motorcycle rack, shelves, fitness equipment, leisure and tourism supplies, steel furniture, various specifications of oil casing, oil tubing and pipeline pipe, water, gas, sewage, air, mining Warm and other fluid transmission, fire and support, construction, etc.