Polyurethane Spraying Foam Preinsulated Steel Pipe Making Machine
1. Technical parameter
| No. | Steel pipe dia. (DN) | Foaming thickness(mm) | PE casing dia. | Min. PE thickness |
| 1 | 500 | 30-60 | 598-658 | 4.5 |
| 2 | 600 | 30-60 | 700-760 | 5.0 |
| 3 | 700 | 30-60 | 790-850 | 5.0 |
| 4 | 800 | 30-60 | 891-951 | 5.5 |
| 5 | 900 | 30-60 | 992-1052 | 6.0 |
| 6 | 1000 | 30-60 | 1093-1153 | 6.5 |
| 7 | 1100 | 30-60 | 1194-1254 | 7.0 |
| 8 | 1200 | 40-100 | 1316-1436 | 8.0 |
| 9 | 1400 | 50-100 | 1538-1678 | 9.0 |
| 10 | 1620 | 50-100 | 1738-1840 | 10.0 |
2. Technological flow:
Steel pipe Load-up online---->External shot blasting ----> dust collector---->internal blow out---->lifting transport pipe trolley---->transport to chuck----> chuck hoist cylinder----> alignment chuck center---->mechanical arm station adjust---->chuck hydraulic clamping---->chuck guard at both ends----> carrier pipe servo transport---->IF heating----> PU foam spraying----> pipe load down line----> transport pipe ----> PE film wrapping----> water cooling---->cutting down pipeline---->trim end of pipe---->printing mark&loading down finished pipe---->sealing end of pipe
3.Disadvantages of steel pipe conveying systems on the market:
Universal joint transmission shaft type. The universal joint can drive at an angle of 15 degrees, resulting in a transmission shaft type conveyor where the angle of the conveyor wheel can be adjusted to a maximum of 15 degrees.
When removing rust from small diameter steel pipes, there are too few spirals and too much sand, which wastes energy and cannot improve production efficiency.
It is not advisable to use pneumatic tires for conveying the machine. The air pressure in the tires varies due to the exposure of the pneumatic tires to the sun and the cooling at night, and the rubber abrasion during steel pipe conveying is serious.
4. Main accessories
| No. | Specification and model | Quantity | unit | remarks |
| | Shot blasting impeller blade | 8 | slice | |
| | Grit dividing wheel | 1 | piece | |
| | control cage | 1 | piece | |
| | ML9 plum blossom spring pad | 1 | piece | |
| | Extruder die Head flange heating ring | 1 | piece | |
| | Extruder air cooler | 1 | piece | |
| | Sprayer nozzle | 1 | piece | |
5. Company profile
Qingdao Huashida Machinery Co., Ltd was established in 2003. Since its inception, Huashida has focused on plastic polyurethane insulation pipe production line, 3PE anti-corrosion pipe production line, large diameter underground pipe production line and plastic pipe joints for 20 years. We always attach great importance to research and development,
collaborating closely with Beijing University of chemical technology, Qingdao university of technology and scientific research institutions. by absorbing advanced technology home and abroad, after 20 years of endeavor we now rank one of the top 3 manufacturers in the industry in China. Huashida machines have been well received in Saudi Arabia, Kazakhstan, Uzbekistan, United Arab Emirates, Turkey, Russia, etc.
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