PULL-OUT BRANCH FORMING TECHNOLOGY

A More Controlled Branch Transition for Stainless-Steel Booster Manifolds

Pull-out forming is a manufacturing process in which a branch collar is formed directly from the wall of the main stainless-steel header.

After the pilot opening is prepared, controlled forming tools are used to raise and shape the branch collar. The connecting branch is then positioned and welded according to the approved manufacturing procedure.

The result is a formed branch foundation that can reduce the need for a large conventional cut opening and extensive internal weld finishing.

HOW BRANCH GEOMETRY AFFECTS
THE MANIFOLD FLOW PATH

Feature

Main Header Opening

Internal Transition

Branch Positioning

Internal Protrusion

Finished Appearance

Production Consistency

Conventional Cut-and Weld

Full branch opening cut into header

Dependent on opening preparation, fit-up& weld finishing

Dependent on fixture setup and operator control

May require additional internal finishing

More visible fabricated branch joint

Depends on fabrication and process control

Pull-Out Formed Branch

Controlled pilot opening with formed collar

More gradual formed transition

Tool-controlled forming can improve repeatability

Can reduce internal weld protrusion

Cleaner integrated branch transition

More repeatable when the forming process is controlled

In a multi-pump booster system, the suction and discharge manifolds provide the common flow path between multiple pumps and the connected system piping.

At each branch connection, flow changes direction as it enters or leaves the main header. The geometry of this transition is therefore an important consideration in manifold design and fabrication.

YuRong’s pull-out forming process creates a controlled branch collar directly from the main-header

wall before welding, providing a more defined transition geometry and a repeatable foundation for branch positioning.

ENGINEERING CHARACTERISTICS OF PULL-OUT FORMING

✓ More Controlled Internal Branch Transition
✓ Reduced Internal Weld Protrusion

✓ Improved Branch Positioning Consistency

✓ Cleaner Finished Appearance

✓ Repeatable OEM Production

✓ Reduced Need for Extensive Internal Grinding

The engineering value of pull-out forming is not simply the finished appearance — it is the ability to establish a controlled branch geometry before welding, supporting more consistent fabrication across recurring OEM production.

ENGINEERING REVIEW

Header diameter, branch size, spacing, material, connection type and project requirements are reviewed before production.

PILOT OPENING

A controlled pilot opening is prepared at the specified branch location.

HOW YURONG BUILDS A
PULL-OUT MANIFOLD

From approved geometry to repeatable OEM production

COLLAR FORMING

Forming tools mechanically raise and shape the branch collar directly from the main-header wall.

BRANCH FIT-UP & WELDING

The branch is positioned on the formed collar and welded according to the approved manufacturing procedure.

FINISHING

Pickling, passivation and polishing options are available according to project requirements and specified surface-finish requirements.

INSPECTION

Critical dimensions, branch alignment, weld condition and specified surface finishing are inspected against approved production and order requirements.

MECHANICAL PRESSURE TESTING

Completed manifolds are mechanically pressure-tested according to the approved inspection plan and order requirements.

How Manifold Design Affects Booster System Performance

Understand how header sizing, branch configuration, connection geometry and system layout interact within a multi-pump booster system.

CONVENTIONAL CUT-AND-WELD VS. PULL-OUT FORMING

Understand how the two fabrication methods differ in branch preparation, internal transition, positioning and production consistency.

ENGINEERING KNOWLEDGE TOPICS

Pressure Loss in
Booster Systems

Understand how pipe sizing, valves, fittings, branch geometry and system layout contribute to total pressure loss in a booster system.

FABRICATION CONSIDERATIONS IN WELDED MANIFOLDS

Branch alignment, opening preparation, weld profile, internal finishing and production consistency are important considerations in manifold fabrication.