Structural Water and Gas Tubes Mills

Shijiazhuang Faith Machinery Co.,Ltd presents its Structural Water and Gas Tubes Mills, tailored for the production of tubes used in plumbing, HVAC systems, and industrial piping. These mills are engineered for tubes ranging from 15 mm to 88.9 mm outside diameter and wall thicknesses up to 3 mm, offering a reliable solution for water supply lines, gas distribution pipes, and heat exchanger tubes.

1. Line Overview

1. Strip Preparation

• Mandrel decoilers feed pre‑galvanized or black annealed strip through tension levelers that correct strip camber and thickness variations common in structural grades.

2. Forming and Welding

• Sequential roll stands shape the strip into a cylindrical form; induction welding heads join edges with a controlled heat profile to minimize scale formation and maintain corrosion resistance.

3. Bead Scarfing and Sizing

• Scarfing units remove internal and external weld beads, ensuring a smooth bore for fluid flow. Sizing stands follow to refine diameter and eliminate ovality.

4. Hydrostatic Testing and End Forming

• Inline hydrostatic test stations verify weld integrity at pressures up to 1.5 MPa. Optional end‑forming modules can crimp or expand tube ends for fittings and connections.

2. Quality and Compliance

• Dimensional Accuracy: Laser micrometers maintain outer diameter tolerances within ±0.1 mm, essential for threaded joint sealing and fixture compatibility.

• Surface Finish: Internal brushing and pneumatic blow‑off stations remove debris and scale, ensuring clean tube interiors for potable water applications.

• Standards Support: Mills can be configured to meet ASTM A53, EN 10255, and ISO 65 specifications, with automatic data logging of test pressures, seam inspection results, and material traceability.

3. Operational Features

• Flexible Coil Handling: Pay‑off assemblies accommodate coils up to 8 tons; accumulator loops allow coil changes without halting production.

• Automatic Length Control: Flying cutoff shears produce lengths from 500 mm to 6,000 mm with cut‑to‑length accuracy of ±0.5 mm.

• Stacking and Bundling: Finished tubes are automatically sorted, stacked in wooden crates or bundles, and strapped for shipment.

4. Control and Maintenance

• PLC‑Based Monitoring: All critical parameters—line speed, weld current, test pressure—are controlled and recorded by the central PLC.

• Operator HMI: Touchscreen interface offers quick selection of tube sizes, test protocols, and production schedules.

• Preventive Maintenance Alerts: Running‑hour meters and cycle counters for bearings, shears, and weld power units generate alerts when maintenance intervals are reached.

5. After‑Sales Support

• Installation Services: Site preparation, civil works coordination, and utilities hookup are managed by Shijiazhuang Faith’s project engineers.

• Training Programs: On‑site and remote training on safety protocols, quality inspection methods, and routine line maintenance.

• Spare Parts Availability: Consumables such as welding coils, test seals, and shear knives are stocked for rapid dispatch.

• Technical Support: 24/7 hotline and remote diagnostics for urgent troubleshooting and parameter tuning.

Structural Water And Gas Tubes Mills Factory