Yingnai FRP Cross enables four-way flow distribution or collection in corrosion-resistant industrial piping systems. Reinforced intersection laminates provide additional strength at the multi-branch connection, while smooth internal surfaces support efficient fluid transfer. Equal or reducing outlets, branch diameters, pressure ratings, resin systems and end connections can be customized for complex pipeline layouts.
| Item | Typical Technical Specification |
| Product Name | FRP Cross |
| Primary Function | Divide or combine flow through four connected pipe directions |
| Typical Manufacturing Range | DN25–DN2000; larger sizes require engineered fabrication and support coordination |
| Cross Type | Equal cross, reducing cross or multi-size cross |
| Branch Arrangement | Two opposing branches normally at 90° to the main run; other arrangements can be customized |
| Size Designation | DN1 × DN2 × DN3, indicating run size and branch outlet sizes |
| Dimension Symbols | Run center-to-end A, branch center-to-end B, run diameter D1, branch diameters D2/D3 and wall thickness t |
| End Connections | Butt-and-wrap, bonded socket/spigot, flanged or mixed connection |
| Typical Pressure Classes | PN6, PN10 and PN16; final rating depends strongly on intersection reinforcement and external loads |
| Resin Options | Isophthalic polyester, vinyl ester, novolac vinyl ester or process-qualified resin |
| Corrosion Barrier | Continuous corrosion barrier through the run, both branches and all internal crotch areas |
| Intersection Reinforcement | Multi-directional radial, circumferential and diagonal reinforcement around all four openings |
| Flow Design Option | Contoured internal junction or swept branches for lower turbulence and reduced solids accumulation |
| Support Requirement | Independent support near the run and branches is recommended to limit nozzle and intersection loads |
| Manufacturing Method | Molded cross, fabricated four-way branch with external overlamination or combined winding/contact molding |
| Inspection | Outlet dimensions, branch angles, centerline alignment, internal contour, intersection laminate, cure and pressure test |
| Applicable Standards | ASTM D5685, ASTM D6041, ASTM D3840, ASTM C582 and ASME NM.2 |
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