Application description

Widely used in piping systems for oil and gas, petrochemical, power generation, water treatment, HVAC, food processing, and pharmaceutical industries. Allows change in pipeline direction (45°, 90°, 180°) with minimal pressure drop. Long radius elbows are preferred for high flow and less erosion; short radius elbows for tight spaces. Also used in fire protection, shipbuilding, and structural applications.

Production description

Pipe or plate is cut, heated, and formed by hot pushing, stamping, or cold bending. For 3D/5D/8D elbows, cold bending with mandrel is used. Seam welded large diameters are segmented and welded. Ends beveled, heat treated, inspected for dimensions and NDT.

Shipping Packaging

For export, elbows are packed in wooden crates or ISPM-15 pallets, each layer separated with foam or cardboard. Machined bevel ends and threads are protected with plastic caps or rust preventive oil. Labels include size, grade, schedule, angle, radius, and heat number for safe sea freight.

Why Choose Us?

1.Factory Strength: Direct manufacturer with hot pushing presses, cold bending machines, and segmental welding lines, producing seamless and welded elbows from 1/2" to 72" (DN15-DN1800) in all radii (LR, SR, 3D, 5D, 8D) and angles (45°, 90°, 180°).

2.Quality Assurance: Strict control of wall thinning (≤12.5% nominal), bevel geometry, dimensional accuracy (center-to-end, angle tolerance ±0.5°), and bore smoothness; 100% dimensional inspection; NDT (MT, PT, UT) options available. Compliant with ASME B16.9/B16.11, EN 10253, GB/T 12459.

3.Certifications & Reports: Mill test certificates (MTC) for raw materials and finished elbows with each shipment; third-party inspections (SGS, BV) and NDT reports (MT/PT/UT) available upon request.

4.Customization & Service: Wide material range (carbon steel A234 WPB, A105; stainless steel WP304/316/321; alloy steel WP11/WP22/WP91), all schedules (Sch10–XXS), custom radii (1.5D to 10D), special angles, reducing elbows, and hot-dip galvanizing or coating with fast lead times.

5.Export Packaging: Plastic end caps (on bevels/threads) + anti-rust oil + foam layer separation + wooden crates/ISPM-15 pallets + steel strapping + clear labeling for safe sea freight and end protection.

FAQ

1. How to store steel elbows to prevent rust and end damage?

Store in clean, dry indoor area. Keep plastic end caps or rust preventive coating on bevels/threads. Stack on wooden pallets with interlayer padding to avoid contact damage. For galvanized elbows, avoid long-term exposure to humidity to prevent white rust.

2. When should I choose long radius (LR) vs short radius (SR) elbow?

Long radius (R=1.5D) is standard for most applications; it reduces pressure drop, erosion, and turbulence, and is recommended for high flow, high pressure, or slurry service. Short radius (R=1.0D) is used only where space is extremely tight, but it causes higher pressure drop and is more prone to erosion. Use LR unless space constraints dictate SR.

3. Can elbows be supplied with extra wall thickness or special bevels?

Yes. We can manufacture elbows with increased wall thickness (e.g., +12.5% above schedule), and with custom bevel angles, long tangents, or special end preparations (e.g., bevel + counterbore for X-ray clearance). Specify your requirements on the order.