High Quality Square Pipe Making Machine | RFQ Sourcing Details
Bending And Forming · Quote on request
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Product specs
Buyer's Digest
Use this page as a product-first sourcing checkpoint before sending an RFQ. Category: Bending And Forming. Confirm application fit, capacity, materials, destination, lead time and compliance requirements before comparing suppliers.
Original product description
High Quality square pipe making machine Description: The HG219 welded pipe unit should be as close as possible to the position of the extrusion roll.
The internal stress of the steel pipe is small and evenly distributed, which can effectively prevent stress corrosion cracking, and the dimensional precision is high, which is convenient for on-site welding construction.
If the induction ring is far away from the extrusion roll, the effective heating time is longer, the heat affected zone is wider, and the weld strength decreases.
On the contrary, the edge of the weld is not heated enough, after extrusion forming bad input heat is insufficient, the heated edge of the weld can not reach the welding temperature, the metal structure still remains solid, the formation of not fused or not welded through;When the input heat is insufficient, the edge of the heated weld exceeds the welding temperature, resulting in overfiring or melting drops, so that the weld forms a weld hole.
Impedance is a magnetic bar or a group of special welding pipe, the impedance of the cross-sectional area should be not less than 70% of the inner diameter of the steel pipe, its role is to make the induction ring, tube blank weld edge and magnetic rod form an electromagnetic induction circuit, produce proximity effect, eddy current heat concentrated near the edge of the tube blank weld, so that the tube blank edge heating to the welding temperature.
Adopt the process of pre - welding after fine welding, the welding process is stable and the weld quality is high. The direct-seam welded pipe equipment is dragged in the pipe blank with a steel wire, and its central position should be relatively fixed close to the center of the extrusion roll.
Burrs inside steel pipes are generally not. After the two edges of the tube blank are heated to the welding temperature, the oil casing is squeezed by the extrusion roll, forming common metal grains interpenetrating and crystallizing, and finally forming a firm weld.
The welding temperature is mainly affected by the high-frequency eddy current thermal power. According to the relevant formula, the high-frequency eddy current thermal power is mainly affected by the current frequency, and the eddy current thermal power is proportional to the square of the current excitation frequency.
The current excitation frequency is affected by excitation voltage, current
High | Applications and Buyer Notes
High is organized as a sourcing-ready Bending And Forming reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time question
Applications
- Initial shortlist building for related product or supplier options.
- Specification and application fit review before bulk purchasing.
- Category, keyword and detail-page comparison before sending an RFQ.
Key specifications
- Category
- Bending And FormingBased on visible page data; confirm exact value in the RFQ.
- Unit
- setBased on visible page data; confirm exact value in the RFQ.
- power
- is proportional to the square of the current excitation frequency. The current eBased on visible page data; confirm exact value in the RFQ.
- frequency
- is affected by excitation voltage, currentBased on visible page data; confirm exact value in the RFQ.
Buyer tips
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- Add certification, material or inspection standards when they affect acceptance.
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FAQ
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Confirm application, specification, quantity, destination and lead-time requirements before comparing offers.
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Yes. Add model, material, size, use case and inspection needs in the RFQ to make replies comparable.
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Check title, category, specifications and related keywords against the actual sourcing requirement.
Source mix: ugc
Key specifications
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