Qingdao Huashida Machinery Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 30 Units/Year |
| Delivery Time | 70-90 days |
| Packaging Details | Standard Package |
| Model NO. | DN 406mm-1422mm |
| Type | Coating Production Line |
| Coating | Powder Coating |
| Substrate | Steel |
| Pipe Dia. | 48-3000mm |
| Blasting | ≥2.5A |
| Fbe Thickness | 200-800um |
| PE Thickness | 2-3mm |
| Brand Name | Huashida |
| Model Number | DN 406mm-1422mm |
| Certification | CE, ISO, RoHS |
| Place of Origin | Qingdao， China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 30 Units/Year |
| Delivery Time | 70-90 days | Packaging Details | Standard Package |
| Model NO. | DN 406mm-1422mm | Type | Coating Production Line |
| Coating | Powder Coating | Substrate | Steel |
| Pipe Dia. | 48-3000mm | Blasting | ≥2.5A |
| Fbe Thickness | 200-800um | PE Thickness | 2-3mm |
| Brand Name | Huashida | Model Number | DN 406mm-1422mm |
| Certification | CE, ISO, RoHS | Place of Origin | Qingdao， China |
| High Light | DN 406mm-1422mm Epoxy Powder Coating Line ，CE ISO RoHS Certified 3LPE Coating Pipe Production Line ，200-800um FBE Thickness Steel Pipe Coating Machine | ||
The core process consists of three main stages:
1. Surface Pretreatment
This is the most critical step, ensuring coating adhesion. The steel pipe undergoes:
Cleaning: Removing oil and grease.
Shot Blasting/Sandblasting: Thoroughly removing rust, old paint, and impurities, creating a rough, anchor-patterned surface.
Preheating: Heating the steel pipe to a suitable temperature to remove moisture and prepare for spraying.
2. Powder Coating and Curing
Electrostatic Spraying: In a specialized spray booth, negatively charged epoxy powder is atomized by a spray gun and evenly adhered to the grounded (preheated) steel pipe surface due to electrostatic attraction.
Heat Curing: The sprayed steel pipe enters a curing oven. The powder melts, flows, and undergoes a cross-linking chemical reaction at high temperature, forming a dense, strong, inert coating. 3. Cooling and Testing
After the steel pipes are removed from the curing oven, they are cooled to room temperature by water or air.
Final testing is then performed, including coating thickness, continuity (electro-spark pinhole testing), and adhesion testing, to ensure quality meets standards.
Process Advantages:
Superior Corrosion Resistance: The coating is chemically inert, resistant to corrosion, acids, and alkalis, providing long-term protection (up to 50 years or more).
High-Strength Adhesion: The coating combines mechanical and chemical bonding with the steel pipe surface, making it difficult to peel off.
Environmentally Friendly and Efficient: The powder is recyclable, with virtually no solvent evaporation (VOCs), meeting environmental requirements.
Uniform Coating: Thickness can be precisely controlled, covering complex shapes such as welds and edges.
Oil and Gas Pipelines
Urban Water Supply and Drainage Pipelines
Chemical Fluid Transportation Pipelines
Building Structural Pipe Piles
3-layer PE coating comprises:
1. Initial FBE primer
2. Intermediate adhesive layer
3. External polyethylene sheath
| No. | Name | Set |
| A. Derusting Equipment | ||
| 1 | Pipe-converying Equipment | 1 |
| 2 | Shot Blast Cleaning Machine | 1 |
| 3 | Cyclone Dust Collector | 1 |
| 4 | Pulse dust collector | 1 |
| 5 | Centrifugal exhaust fan | 1 |
| 6 | Rust removal equipment PLC | 1 |
| B. Coating equipment | ||
| 1 | Coating transfer equipment | 1 |
| 2 | IF heating device | 1 |
| 3 | Powder spraying device | 1 |
| 4 | Automatic loading dryer | 2 |
| 5 | SJ-65/30 Extruder | 1 |
| 6 | SJ-180/30 Extruder | 1 |
| 7 | Hot melt adhesive extruder die | 1 |
| 8 | PE sheet extruder head mold | 1 |
| 9 | Hot melt adhesive/PE sheet coating device | 1 |
| 10 | Environmental Protection Ventilation equipment | 1 |
| 11 | Cooling Spray equipment | 1 |
| C.Platform Equipment | ||
| 1 | Steel pipe platform | 1 |
| 2 | Post-rust removal transition platform | 1 |
| 3 | Product tube storage platform | 1 |
| 4 | Hydraulic Equipment | 3 |
| D.Groove Equipment | ||
| 1 | PE Beveling Machine | 2 |
| 2 | Hydraulic Lifting and Turning Machinery | 1 |
| 3 | Hydraulic Equipment | 1 |
| 4 | PLC | 1 |
| E.Compressed air Equipment | ||
| 1 | Screw Air Compressor | 1 |
| 2 | Cold dry machine | 1 |
| 3 | Precision filters | 3 |
| 4 | Gas tanks | 1 |
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
3000000-5000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
1. company profileQingdao 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 joints a... 1. company profileQingdao 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 joints a...
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