Product Parameters
| Item | Specification |
|---|---|
| Material | Gray Iron (ASTM A48), Ductile Iron (ASTM A536), Carbon Steel (WCB) |
| Casting Method | Sand Casting, Shell Mold |
| Size Range | 1/2" – 24" |
| Pressure Rating | Class 150 – Class 2500 |
| Application | Oil and gas, water distribution, chemical processing |
| MOQ | 5 pcs |
description
90 degree cast pipe elbows change direction in piping systems - the radius of the bend determines how much pressure loss occurs and how much space the elbow needs. Short radius (1D) elbows have the tightest bend but highest pressure drop. Long radius (1.5D and 2D) elbows cost more in material but reduce pressure loss significantly. The elbow is cast as a single piece with threaded or flanged ends for connection. Sand casting handles the full range of sizes and pressure ratings. Shell mold casting produces better surface finish and dimensional accuracy for the smoother bore that reduces turbulence.
Why Center-to-End Dimension Matters
The C-to-E (center to end) dimension determines how the elbow fits into the piping system layout. Most specifications call out standard C-to-E dimensions - deviating from those standards requires custom piping design and more fittings to compensate. Long radius (1.5D) elbows have C-to-E equal to 1.5 times the nominal pipe diameter. Short radius (1D) is equal to the diameter.
FAQ
Q1: MOQ?
A1: 5 pieces for standard cast elbows.
Q2: Materials?
A2: Gray iron, ductile iron, carbon steel WCB.
Q3: Radius options?
A3: Short radius (1D), standard radius (1.5D), long radius (2D).
Q4: Pressure ratings?
A4: Class 150 through Class 2500.
Q5: Casting methods?
A5: Sand casting (standard), shell mold (better surface finish and bore).
Q6: Custom configurations?
A6: Yes. Custom angles, custom radii, custom end configurations.
Quality is non-negotiable in precision manufacturing. Every component undergoes rigorous inspection at each stage of production.
- ISO 9001:2015 - Quality management system covering design and manufacturing
- API 6D / API 600 - Design and testing compliance for valve components and flanges
- Hydrostatic Pressure Testing - Every valve body pressure-tested to 1.5× rated pressure
- MPI / LPI - Magnetic particle and liquid penetrant inspection for weld integrity
- CE / ATEX - Pressure equipment directive compliance for EU market available
- Passivation / Electropolishing - ASTM A967 procedures for corrosion resistance
- Material Traceability - Heat number tracking from raw material to finished part
From raw material to finished product, every step is controlled and documented:
- Pattern Making - Wooden or metal pattern fabrication for sand/centrifugal/investment casting
- Molding - Sand casting, shell mold, centrifugal, or lost-wax investment casting setup
- Melting & Pouring - Controlled furnace melting with chemistry and temperature monitoring
- Solidification & Shakeout - Controlled cooling with riser/removal and core shakeout
- Heat Treatment - Annealing, normalizing, or solution treatment per specification
- Machining - CNC machining, drilling, and tapping to final dimensions
- Surface Treatment - Grinding, welding, or coating as required
- Inspection & Testing - Dimensional, visual, hydrostatic, or NDT inspection
- Cleaning & Packaging - Sand removal, degreasing, rust prevention, and packaging
Hot Tags: 90 degree cast pipe elbows, China 90 degree cast pipe elbows manufacturers, Black Iron Pipe Fittings, Black Malleable Fittings, Carbon Steel Cast Flanges, Cast Flanges, Cast Pipe Flange, Long Radius Elbow