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ZSJH
Large industrial buildings often combine high working space, crane operations and heavy process equipment. Frame members must be coordinated with these loads and with the limits of shop fabrication, lifting and transport. ZSJH fabricates built-up columns and beams, bracing, stiffeners and connections as a coordinated frame package to approved drawings, and manages the transport split and lifting interface with the project schedule.
Why choose ZSJH for your heavy frame package:
1. Drawings-first manufacturing. Every member is fabricated to your approved drawings and revision; no guesswork on your project geometry.
2. Project-specific engineering review. Geometry, loads and interfaces are reviewed before fabrication; structural design and detailing are available on request.
3. Full-section fabrication capability. Built-up columns, box sections, plate girders, bracing, stiffeners and connections are produced as a coordinated package.
4. Quality control and complete documentation. Weld details, tolerances, inspection records and specified surface protection are tracked and documented per project.
5. Transport and erection planning. Maximum piece size/weight is controlled, and members are split for transport and staged to match on-site erection.
6. One-window export service. Packing, component marking, shipping documents and delivery scope are handled to your destination and schedule.
The following are typical ranges only; actual values are subject to the approved drawings and project specification.
| Item | Typical range | Note |
|---|---|---|
| Member type | Built-up columns (H-section / box / cruciform), beams, plate girders, bracing, stiffeners and connection details | Custom-fabricated as a coordinated set to your drawings |
| Common steel grades | Q355B (GB/T 1591-2018); ASTM A36 / A572 Gr.50 / A992; EN S275 / S355 | Selected per project design requirements |
| Plate thickness | Typically 6–80 mm; heavier members per approved drawing | Subject to approved drawings |
| Welding standard | AWS D1.1 / ISO 3834 / GB 50661 (per project requirements) | Welders qualified and traceable |
| Fabrication tolerance | ISO 13920 or GB 50205-2020 (per project requirements) | As noted on the approved drawing |
| Surface treatment | Abrasive blast to Sa2½ (ISO 8501-1) + primer / topcoat; or hot-dip galvanizing (ISO 1461) | Per project corrosion-protection requirement |
| Max piece weight / size | Limited by fabrication, lifting and transport; determined per project | Split into transportable sections as required |
| Inspection | Dimensional / weld inspection; NDT (UT/MT/RT) and third-party inspection as required | Per project specification |
Typical applications include steel mills, high-bay manufacturing plants, heavy processing buildings and crane-served workshops. “Heavy” describes the project-specific member and load demands.
Quality is controlled per project against the applicable welding code, tolerances and surface-preparation requirements. Standard documentation includes:
1. Mill Test Certificates (MTC) for steel grades used.
2. Welding records and welder qualifications; NDT reports (UT/MT/RT) where required.
3. Dimensional and tolerance inspection records and final inspection report.
4. Coating / galvanizing inspection records where specified.
5. Packing list with component marks, and shipping / export documents.
ZSJH supplies fabricated heavy frame members as loose or staged shipments matched to on-site erection. Supply scope is confirmed against the approved drawings and quotation.
Members are marked with component numbers, protected against transit damage and packed for sea or road transport. Oversized members are split into transportable sections and staged to match on-site erection; export documents support customs clearance at the destination.
| Question | Answer |
|---|---|
| Do you fabricate only to drawings, or do you also provide design? | We fabricate to your drawings and can also provide structural design and detailing services, depending on how complete your drawings are. |
| How long is the delivery lead time? | It depends on drawing approval, material procurement and the work volume. 【To be filled with your typical production lead time】 |
| Can you export to our country? | Yes. We can export as break-bulk or container cargo, with documents to support customs clearance at the destination port. |
| What documents do you provide? | Mill test certificates, inspection records, packing lists and shipping documents; third-party inspection can be arranged per project. |
| What if a member is too heavy or too large? | We split members into transportable sections based on fabrication, lifting and transport limits, ship them in stages and assemble on site. |
| How do you ensure quality? | We inspect against the applicable welding code, tolerances and surface-preparation requirements per project, and can arrange third-party inspection. |
Send ZSJH your project location, drawings or BOM, building span and eave height; crane and equipment loads; member section and plate thickness; maximum piece size/weight; transport split; lifting interface; quantities; finish; inspection scope; delivery destination and target date. If drawings are incomplete, ask about structural design, calculations and detailing support.
