Rongheng supplies ERW Steel Pipes and Tubes for construction, municipal, water, equipment and general industrial applications. The production process integrates forming, high-frequency welding, sizing and cutting, with standard and customized sections available for project requirements.
High-frequency resistance welding joins the formed steel strip along the longitudinal seam. Compared with seamless production, this manufacturing route is well suited to continuous production of commonly used pipe sizes and can provide consistent section geometry for subsequent cutting, threading, welding and installation work.
Round PipeUsed for fluid lines, structural members, general fabrication and equipment-related applications. |
Square TubeA closed square section for steel frames, supports, equipment structures and construction components. |
Rectangular TubeProvides a rectangular section for frames, structural supports, machinery and fabricated assemblies. |
| Specification Item | Available Options | Notes |
|---|---|---|
| Pipe Section | Round / Square / Rectangular | Select according to the structure or service application. |
| Steel Grade | Q235B / Q355B / SS400 | Other grades can be evaluated according to project requirements. |
| Dimensions | Common outside diameters, wall thicknesses and sections | Non-standard dimensions can be discussed before production. |
| Length | Standard lengths / Special fixed lengths | Cut-to-length service is available. |
| Order Combination | Single specification / Multiple specifications | Mixed-size container loading can be arranged for suitable orders. |
High-Frequency Welded SeamThe welding process is designed to form a continuous longitudinal joint after the strip is shaped. Weld quality, surface condition and dimensional consistency are important inspection points for applications involving further fabrication or installation. |
Section ConsistencyRoundness, side dimensions, wall thickness and overall straightness affect cutting, threading, welding and assembly. These parameters should be checked against the applicable product specification. |
For projects that require more than standard-length supply, Rongheng can coordinate processing according to drawings or installation requirements.
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Cutting Fixed-length cutting for site installation or fabrication. |
Threading Threading service for applicable round pipe requirements. |
End Preparation Pipe-end grinding and bevel processing according to requirements. |
Surface Preparation Rust-removal and pre-treatment options can be arranged. |
For export orders, we coordinate the product specification, production schedule, inspection, packing and shipment documentation as one supply process.
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01 Specification |
02 Production |
03 Inspection |
04 Packing |
05 Shipment |
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Municipal Water Systems General water-related pipework and infrastructure applications. |
Fire Protection Applicable fluid pipework according to project specifications. |
Steel Structures Structural frames, supports and fabricated steel assemblies. |
Factory Construction Building frames, supports and general construction components. |
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Equipment Frames Machine structures, brackets and equipment support assemblies. |
Agricultural Water Systems General-purpose water transmission and support applications. |
Ventilation Suitable pipe and tube applications according to system design. |
Infrastructure General construction and infrastructure projects requiring welded sections. |
Send the required section, steel grade, wall thickness, length, quantity and processing requirements. For construction or equipment projects, drawings can be provided so that the section and processing requirements can be reviewed before quotation.
ERW pipe is formed from steel strip and joined along the longitudinal seam by electric resistance welding. Seamless pipe is manufactured without a longitudinal welded seam. The appropriate option depends on the required standard, application, dimensions, pressure and service conditions.
Yes. Round pipes, square tubes and rectangular tubes are available for different construction, equipment and general industrial requirements.
Multiple specifications can be coordinated for suitable orders. The final loading combination depends on the product dimensions, quantities and container loading conditions.
Cutting, threading for applicable round pipes, end grinding, beveling and surface pre-treatment can be arranged according to the order requirements.
Share your required dimensions, grade, quantity, length and processing requirements. Rongheng can review the specification and coordinate production, inspection and export shipment accordingly.
