C&N industrial Group, pipe, fitting and flanges manufacturers,fbe epoxy and pe coating for pipeline since 1991,with brand C&N huitong ,C&N hongcheng.
Hot Tap Split Reducers
Struggling with tight spaces, impossible welds, or costly pipeline shutdowns? Meet the ultimate problem solver: C&N’s Split Fittings & Hot Tap Split Reducers.
About Split Fittings
A split fitting (like a split reducer, elbow, or tee) is exactly what it sounds like—a complete pipe fitting precision-cut into two symmetrical halves. While it might seem like an extra manufacturing step, it solves some of the biggest headaches in pipeline construction, hot tapping, and maintenance:
1. The Tight Space Master When pipelines are flush against walls, ceilings, or buried in narrow trenches, replacing an entire spool is a nightmare. With our split fittings, you simply clamp the two halves over the existing pipe and weld. No extensive dismantling, and no pipe rotation needed.
2. The Ultimate Repair Sleeve Got a worn-out or leaking fitting on an aging chemical, marine, or fire-protection line? Instead of large-scale pipe cutting, a split fitting acts as a permanent structural “patch” or repair sleeve, encapsulating the damaged area. It avoids extensive hot work on the inner pipe and drastically reduces downtime.
3. Internal Coating Protector For pipes with internal plastic, rubber, or anti-corrosion linings, standard full-penetration welding can burn and destroy the internal coating. Split fittings allow you to weld the external seams safely, minimizing heat transfer and preserving the integrity of the internal pipeline defense.
4. Prefabrication Flexibility For factory pre-fab spools, split structures allow for easy transportation and crucial micro-adjustments on-site. Even if the existing pipe has a slight deviation, the split design ensures a perfect, seamless fit.
Why Precision Matters in Transitions A reducer’s tapering geometry makes it notoriously difficult to split cleanly. A poor cut results in warped halves that rock back and forth on the pipe. Our CNC wire-cutting technology ensures that the complex curve of the transition zone is divided perfectly. When the two halves are assembled on-site, they hug the existing pipe tightly from the larger diameter down to the smaller one, ensuring stress is distributed evenly across the longitudinal welds.
Specifications & Built-to-Last Materials Manufactured starting from seamless or heavy-wall welded reducers conforming to ASME B16.9 dimensions, our split reducers are customized for repair applications. Common materials include ASTM A234 WPB for general use, and Alloy Steels (like WP11/WP22) for high-temperature petrochemical processing.
A234 WPB Chemical Composition Requirements
| Element | Composition, % |
|---|---|
| C | ≤0.30 |
| Mn | 0.29-1.60 |
| P | ≤0.050 |
| S | ≤0.058 |
| Si | ≥0.10 |
| Cr | ≤0.40 |
| Mo | ≤0.15 |
| Ni | ≤0.40 |
| Cu | ≤0.40 |
| V | ≤0.08 |
*ASTM A234 WPB fittings made from bar or plate may have 0.35 max carbon and that made from forgings may have 0.35 max carbon and 0.35 max silicon with no minimum.
*For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted, up to a maximum of 1.65%.
*The sum of copper, nickel, chromium, and molybdenum shall not exceed 1.00%.
Mechanical Properties
| Tensile Requirements | Values |
|---|---|
| T.S. min. MPa [ksi] | 415 [60] |
| Y.S. min. MPa [ksi] | 240 [35] |
| Hardness max. HBW | 197 |
| El.lg-1 min. % | 22 |
| El.tr-1 min. % | 14 |
| El.lg-2 min. % | 30 |
| El.tr-2 min. % | 20 |
*El.lg-1 & El.tr-1: longitudinal & transverse elongation of standard round specimen, or small proportional specimen in 4D.
*El.lg-2 & El.tr-2: longitudinal & transverse elongation of rectangular specimen for wall thickness 7.94 mm and over, and for all small sizes tested in full section; in 2″ [50 mm].
*For each 0.79 mm decrease in wall thickness below 7.94 mm of the rectangular specimen, a deduction of 1.5% for longitudinal and 1.0% for transverse from the values shown above is permitted.
The C&N Advantage: Why Our Split Fittings Stand Out
In the pipeline industry, an inaccurately cut split fitting is a disaster. It leads to misalignment, forcing welders to spend hours hammering, grinding, and overlay welding—creating ugly joints and dangerous stress concentrations.
At C&N, we manufacture our Hot Tap Split Reducers and Split Fittings using state-of-the-art CNC wire-cutting technology:
- Absolute Precision: Perfectly smooth bevels and strict geometric tolerances.
- 100% Symmetrical: The two halves mate flawlessly every single time.
- Ready to Weld: Welders can perfectly align and weld them straight out of the box—no forced assembly, no site modifications. This drastically lowers on-site labor costs and construction difficulty.
Whether you are executing a live hot tap, dealing with restricted spaces, or performing emergency repairs, C&N’s high-precision split fittings deliver a fast, reliable, and perfectly aligned solution.Let’s streamline your pipeline maintenance. Contact C&N today to discuss your specific project requirements!
