Qingdao Huashida Machinery Co., Ltd.
| Payment Terms | L/C, D/A, D/P, Western Union, T/T, MoneyGram |
| Delivery Time | come to an agreement in respect of the delivery time |
| Packaging Details | Packing according to Machine |
| Application | Produce District Heat Distribution Pipe |
| Pipe Structure | Steel Working Pipe-Polyurethane Foam-HDPE Casing |
| Loading Way | Vacuum Automatic Feeding |
| Feeding Capacity | 1000kg/H |
| Derusting load up pipe rack | 20# channel steel double row |
| Derusting load down pipe rack | 20# channel steel double row |
| Brand Name | HUASHIDA |
| Certification | ISO9001 |
| Place of Origin | Qingdao，Shandong，China |
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Product Specification
| Payment Terms | L/C, D/A, D/P, Western Union, T/T, MoneyGram | Delivery Time | come to an agreement in respect of the delivery time |
| Packaging Details | Packing according to Machine | Application | Produce District Heat Distribution Pipe |
| Pipe Structure | Steel Working Pipe-Polyurethane Foam-HDPE Casing | Loading Way | Vacuum Automatic Feeding |
| Feeding Capacity | 1000kg/H | Derusting load up pipe rack | 20# channel steel double row |
| Derusting load down pipe rack | 20# channel steel double row | Brand Name | HUASHIDA |
| Certification | ISO9001 | Place of Origin | Qingdao，Shandong，China |
| High Light | Polyurethane Spraying Steel Pipe Production Line ，Prefabricated Insulated Steel Pipe Production Line | ||
Rigid polyurethane spraying polyethylene winding prefabricated directly buried insulation pipe consists of steel working pipe, spraying polyurethane rigid foam insulation layer and winding polyethylene outer protective pipe. See the following figure for product structure:
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. Features of the polyurethane spraying PE winding insulation pipe
(1). Density, thermal conductivity, compressive strength and other indices of the polyurethane insulation layer are uniform and consistent. Therefore overall performance of the pipe is superior.
(2). The polyurethane insulation layer is formed by free foaming. Since polyurethane is foamed perpendicular to the axial direction of the pipe, compressive strength of the insulation layer is improved.
(3). The polyurethane insulation layer is formed after spraying. The raw materials are sprayed onto the outer surface of the steel pipe in a liquid form, and then begins to foam. Due to the high reaction activity of the spraying polyurethane raw materials, adhesion between steel pipe surface and polyurethane foam layer is stronger.
(4).Roughness of the surface of polyurethane foam layer is more conducive to increase bonding effect between insulation layer and outer HDPE protective layer.
(5). Polyurethane insulation layer can be sprayed according to the thickness required by customers with a thickness of 15-20mm. Costs can be significantly saved.
(6). Prefabricated directly buried insulation pipes produced using the "spray winding" process, with polyurethane insulation layer and polyethylene outer protective layer thickness adjustable according to users needs. The production process does not require additional molds and tooling, making it simple and easy to operate. Due to the absence of expansion stress on the polyethylene outer protective layer during foaming in the "spray winding" process, thickness of the polyethylene outer protective layer can be relatively thinner, reducing costs for customers.
(7). The polyethylene outer protective layer is formed by circumferential winding, therefore circumferential elongation and tensile strength are significantly improved. Circumferential strength of polyethylene protective layer is stronger.
(8). As this is a completely automatic production line, Production speed is improved and production quality is consistent and superior.
4. Main indices of the composite pipe
| Item | Standard value |
| Pipe diameter | DN300-DN1620 |
| OD contraction rate | <=2% |
| Radial shear strength | ≥0.12(23±2ºC)MPa ≥0.08(140±2ºC)MPa |
| Shock strength | (-20ºC, 3Kg, hammer falls from 2 meters high) No visible cracks |
| Peak Operating temperature | 140ºC |
| Continuous operating temperature | 120ºC |
| Service life | ≥30 years |
5. Company profile
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
3000000-5000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
1. Our Factory Qingdao Huashida Machinery Co., Ltd. is located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have tens of years experience in plastic pipe, sheet, and board extrusion lines, and pipe... 1. Our Factory Qingdao Huashida Machinery Co., Ltd. is located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have tens of years experience in plastic pipe, sheet, and board extrusion lines, and pipe...
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