Nickel Alloy Butt-weld Fittings

Butt-weld fittings are critical components that achieve piping system connections through butt welding with pipes. Featuring high connection strength, low flow resistance, reliable sealing, and suitability for demanding conditions, they are widely used in petrochemical, offshore engineering, nuclear power energy, pharmaceutical food, and shipbuilding industries. The nickel alloy butt-weld fittings supplied by us are manufactured from high-quality nickel-based alloy seamless pipes or plates through multiple precision processes including pushing/pressing/stamping, solution heat treatment, sizing, machining, and pickling/passivation. Featuring uniform wall thickness, good streamlined shape, dense structure, and excellent corrosion resistance, they are specifically designed for piping systems under high temperature, high pressure, and severe corrosion conditions.

Main Product Types:

1. Butt-weld Elbow: 45°, 90°, 180° direction change
2. Butt-weld Tee: Equal/reducing, branching or merging
3. Butt-weld Cross: Four-way branching
4. Butt-weld Reducer: Concentric/eccentric, diameter change
5. Butt-weld Cap: Closing pipe ends
6. Butt-weld Stub End: Used with lap joint flanges

Supply Range

Nominal Diameter (DN/NPS): DN15 – DN600 (1/2 inch – 24 inches)

Wall Thickness: SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XXS

Forming Process: Seamless Pushing (DN≤600), Plate Forming/Welding (DN＞600 or non-standard)

End Type: Bevelled End (standard), Plain End optional

Surface Condition: Pickled, Passivated, Polished optional

Dimensional Inspection

1. End OD: Measuring using calipers, tape measures
2. Wall Thickness: Multi-point measurement using ultrasonic thickness gauges
3. Center to End Distance: Measuring using tape measures, templates
4. Elbow Angle: Measuring using angle gauges, templates
5. End Bevel: Inspecting bevel angle, root face dimensions

Appearance Inspection

1. Surface Quality: Visual inspection, no cracks, folds, laps, or other defects
2. Internal/External Surface: Inspecting smoothness, no scratches, pits

Non-Destructive Testing

1. Penetrant Testing (PT): 100% inspection of internal and external surfaces
2. Radiographic Testing (RT): Inspecting weld seams for welded fittings
3. Ultrasonic Thickness Measurement: Verifying minimum wall thickness

Third-Party Inspection Support

We welcome clients to designate international Third-party inspection agencies for pre-shipment inspection, with shipment only after passing inspection.