ZSJH
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ZSJH Steel supplies made-to-drawing steel profiles for building suppliers, contractors, equipment manufacturers and distributors. Cold roll forming progressively shapes sheet or coil at room temperature, producing long members with specified webs, flanges, lips and returns. Orders can combine custom section geometry with holes, slots, reinforcing ribs, end notches and fixed lengths, supplied as unfinished sections or finished project components.

Complex open sections can integrate mounting and stiffening features that would otherwise need separate parts. Approved tooling supports repeatable geometry for recurring OEM orders. Cut lengths and prepared holes help match installation interfaces, while coordinated forming and finishing reduce the number of processing suppliers a buyer needs to manage. Actual weight, stiffness and cost benefits depend on the designed section, batch size and material specification.
Supply option | Product configuration |
Standard sections | C, U, Z, hat, omega and sigma sections where tooling is suitable. |
Modified sections | Standard forms with special lengths, end cuts, holes or coatings. |
Custom sections | Asymmetric channels, multiple folds, return lips and approved special shapes. |
Perforated sections | Repeated round holes, slots, keyholes and mounting patterns. |
Reinforced sections | Longitudinal ribs, beads or folded edges designed for the required stiffness. |
Item | Options and requirements |
Feedstock | Uncoated carbon steel or metallic-coated coil; confirm the complete product specification. |
Common grades | Q235/Q355 and suitable S235/S355 where the coil and forming route are appropriate. |
Coated grades | EN 10346 S280GD/S350GD or a suitable ASTM A653 structural grade when specified; identify coating type/mass. |
Thickness | Reference 1.0–6.0 mm. Feasibility depends on strength, bend radii, shape and tooling; not every combination is available. |
Section dimensions | Drawing-specific depth, flange/lip widths, angles, bend radii, ribs and returns. |
Length and holes | Fixed or project-specific lengths; in-line or secondary hole/slot processing where feasible. |
Finish | Pre-galvanized coil, agreed post-fabrication galvanizing, primer, paint or powder coating; colors to specification. |
Documentation | Agreed material certificates, dimensional reports, sample records and packing lists. |


Yes. A sample can be used for preliminary evaluation, but a confirmed drawing should be prepared before production to define dimensions, tolerances and material requirements.
Tooling and roller positions are adjusted according to steel grade, thickness and bending characteristics. The finished profile is measured against the approved drawing.
Depending on the design, punching can be completed before or during roll forming. The production sequence is selected according to hole accuracy and profile geometry.
Yes. We can combine forming, punching, cutting, drilling, welding and surface treatment according to the project requirements.
Yes. After tooling and profile specifications are approved, the process can provide consistent sections for future batch orders.
Send ZSJH your section drawing, material and quantity for a custom OEM quote.
Button: Request an OEM Quote