The Qingdao Huashida steel elbow 3PE anti-corrosion production line is mainly used in various fields, such as industrial oil and gas transportation, water supply transportation, sewage transportation, and chemical transportation.
At least sixteen sets of Elbow pipe conveying structures have been set up, with Elbow pipes placed on the conveying structures. The rotating shaft of the driving mechanism is driven by a rotating motor to rotate the gear plate, and the rotational power is transmitted through the driving mechanism as the center. Adjust the height of the hanging rubber roller using the lifting device of the Elbow pipe conveying structure to adapt to the uniform center height of different pipe diameters.
1. Variable bend pipe conveyor line
Breaking through the overall framework of conventional conveyor lines, a "variable elbow pipe conveyor line" with a fixed anti-corrosion center for bent pipes has been designed, allowing pipes with different elbow pipe diameters, curvature radii, and angles to undergo anti-corrosion operations on the same production line.
2. Precise arc determination technology
Developed precise arc determination technology, using alloy expansion heads to enlarge the diameter of steel pipes and eliminate internal stress during heating deformation. Subsequently, rapid cooling and tempering treatment were carried out to obtain precise curved pipes, overcoming the problem that existing CNC equipment cannot accurately handle springback, elongation, and forming radius.
3. Coaxial winding device for curved pipes
A coaxial winding device for curved pipelines has been designed, which adopts the asynchronous principle of inner and outer shafts and the internal expansion and contraction diameter technology to solve the problem of winding with different diameters rotating at the same line speed, achieving continuous and precise automatic winding.
4. Spray coating technology
Developed Elbow pipe external high-voltage electrostatic spraying technology to achieve automatic electrostatic spraying processing. Effectively improve the uniformity of surface spraying on steel pipes. The surface coating is thin, uniform, and has good glossiness. At the same time, the coating has good adhesion, high hardness, and good corrosion resistance.
5. Sulfide boiling technology
Applied fluidized boiling technology to achieve automatic control of FBE powder heating and melting. Easy to operate, low energy consumption, and stable physical performance.
Bend 3lpe coating pipe parameters
| item | Name | specification |
| 1 | Diameter of steel pipe | 426, 630, 720, 820,1000,1200 |
| 2 | Curvature radius | 4-6 times D |
| 3 | Elbow angle | 15-90 degrees |
| 4 | Steel tube wall thickness | 8 mm -12 mm |
| 5 | Epoxy powder thickness | more than 170 um |
| 6 | AD copolymer adhesive thickness | 170-250 um |
| 7 | PE layer thickness | 2.5 - 3.7 mm |
1. Awarded the first (set) technical equipment in Shandong Province
2. More efficient and stable
3. High degree of automation, intelligent design, reducing manual labor
4. 70% of products are shipped to countries and regions such as Europe, America, the Middle East, Central Asia, Africa, Russia, etc
5. High market share
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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