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Stainless Steel Fitting
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The High-Pressure Stainless Steel BW (Butt-Weld) Cross is a robust pipe fitting designed to create four-way connections in high-pressure, high-temperature industrial pipelines. Constructed from seamless 304 or 316 stainless steel, this cross features butt-weld ends (ANSI B16.25 compliant) and a reinforced design, ensuring structural integrity and leak-free performance in critical applications.
Heavy-Duty Construction:
Seamless stainless steel body (304/316) with equal or reducing branch sizes, rated for working pressures up to 2,500 PSI (schedule 80, 316 stainless steel) and temperatures from -46°C to 815°C.
Reinforced center section (1.5x wall thickness) withstands multidirectional pressure loads, reducing stress concentration at the branch junctions.
Precision Welding Ends:
Butt-weld ends with beveled edges (37.5° ±1°) for full-penetration welds, compliant with ASME B16.9 and suitable for both automatic and manual welding processes.
Available in equal cross (all branches same size) and reducing cross (branch sizes differ by one nominal size), offering versatility in pipeline design.
Flow & Stress Optimization:
Smooth internal transitions (radius ≥1.0x pipe wall thickness) minimize turbulence and pressure loss, with a hydroformed internal surface (Ra ≤1.6μm) for laminar flow in multi-branch systems.
316 stainless steel variant with molybdenum content resists pitting in chloride-rich media, ideal for seawater and brine distribution systems.
Quality Assurance:
100% radiographic testing (RT) for welds in critical applications, with dimensional checks via 3D scanning to ensure alignment accuracy (±0.5mm for 12" NPS).
Compliant with ISO 9001:2015 and customer-specific specifications (e.g., Shell MESC SPE 77/300 for oil & gas projects).
Ideal for complex industrial pipeline networks:
Oil & Gas Refineries: Multi-branch connections in process units, flare systems, and heat exchanger networks, with 316 stainless steel meeting NACE MR0175 for sour service.
Power Generation: Four-way connections in steam header systems and condensate return lines, withstanding cyclic thermal loads in combined cycle plants.
Chemical Processing: Distributing raw materials in batch reactors and distillation columns, with equal cross design enabling balanced flow distribution.
Water Treatment: Multi-outlet connections in filtration skids and reverse osmosis plants, with reducing cross options for size transitions in compact layouts.
Q: What is the maximum allowable pressure for a reducing cross?
A: Pressure rating is determined by the smallest branch size; consult the datasheet for specific size-pressure combinations.
Q: Can the cross be used in seismic zones?
A: Yes, but include additional bracing at the cross junctions to absorb lateral forces, as multi-branch fittings are more susceptible to vibration fatigue.
Q: How to inspect for weld defects in the cross?
A: Use ultrasonic testing (UT) or magnetic particle inspection (MPI) to detect surface/subsurface flaws, especially at branch-to-main connections.
Q: Are there non-magnetic versions available for sensitive applications?
A: Yes, 316L stainless steel offers low magnetic permeability, suitable for use near magnetic separators and MRI equipment.
The High-Pressure Stainless Steel BW (Butt-Weld) Cross is a robust pipe fitting designed to create four-way connections in high-pressure, high-temperature industrial pipelines. Constructed from seamless 304 or 316 stainless steel, this cross features butt-weld ends (ANSI B16.25 compliant) and a reinforced design, ensuring structural integrity and leak-free performance in critical applications.
Heavy-Duty Construction:
Seamless stainless steel body (304/316) with equal or reducing branch sizes, rated for working pressures up to 2,500 PSI (schedule 80, 316 stainless steel) and temperatures from -46°C to 815°C.
Reinforced center section (1.5x wall thickness) withstands multidirectional pressure loads, reducing stress concentration at the branch junctions.
Precision Welding Ends:
Butt-weld ends with beveled edges (37.5° ±1°) for full-penetration welds, compliant with ASME B16.9 and suitable for both automatic and manual welding processes.
Available in equal cross (all branches same size) and reducing cross (branch sizes differ by one nominal size), offering versatility in pipeline design.
Flow & Stress Optimization:
Smooth internal transitions (radius ≥1.0x pipe wall thickness) minimize turbulence and pressure loss, with a hydroformed internal surface (Ra ≤1.6μm) for laminar flow in multi-branch systems.
316 stainless steel variant with molybdenum content resists pitting in chloride-rich media, ideal for seawater and brine distribution systems.
Quality Assurance:
100% radiographic testing (RT) for welds in critical applications, with dimensional checks via 3D scanning to ensure alignment accuracy (±0.5mm for 12" NPS).
Compliant with ISO 9001:2015 and customer-specific specifications (e.g., Shell MESC SPE 77/300 for oil & gas projects).
Ideal for complex industrial pipeline networks:
Oil & Gas Refineries: Multi-branch connections in process units, flare systems, and heat exchanger networks, with 316 stainless steel meeting NACE MR0175 for sour service.
Power Generation: Four-way connections in steam header systems and condensate return lines, withstanding cyclic thermal loads in combined cycle plants.
Chemical Processing: Distributing raw materials in batch reactors and distillation columns, with equal cross design enabling balanced flow distribution.
Water Treatment: Multi-outlet connections in filtration skids and reverse osmosis plants, with reducing cross options for size transitions in compact layouts.
Q: What is the maximum allowable pressure for a reducing cross?
A: Pressure rating is determined by the smallest branch size; consult the datasheet for specific size-pressure combinations.
Q: Can the cross be used in seismic zones?
A: Yes, but include additional bracing at the cross junctions to absorb lateral forces, as multi-branch fittings are more susceptible to vibration fatigue.
Q: How to inspect for weld defects in the cross?
A: Use ultrasonic testing (UT) or magnetic particle inspection (MPI) to detect surface/subsurface flaws, especially at branch-to-main connections.
Q: Are there non-magnetic versions available for sensitive applications?
A: Yes, 316L stainless steel offers low magnetic permeability, suitable for use near magnetic separators and MRI equipment.
