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Zirconium & Zirconium Alloy Fittings

The zirconium & zirconium alloy fittings refer to butt welding pipe fittings manufactured to ASTM B653 covering three grades: Grade R60702 (PZ 2): unalloyed zirconium, Grade R60704 (PZ 4): zirconium-tin alloy, Grade R60705 (PZ 5): zirconium-niobium alloy.

ASTM B653 zirconium Gr. R60702(PZ 2) elbows

ASTM B653 zirconium Gr. R60702(PZ 2), 90° elbows BW L/R, 3″ SCH 40, made to ASME B16.9

Raw Materials, Manufacture and Heat Treatment

Zirconium or zirconium alloy butt welding fittings may be manufactured from ASTM B493 Zr & Zr alloy forgings, ASTM B523 seamless or welded Zr & Zr alloy tubes, ASTM B550 Zr or Zr alloy bars and wires, ASTM B551 Zr & Zr alloy strip, sheet and plate, and ASTM B658 seamless or welded Zr & Zr alloy pipes.

The manufacturing process may include hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or a combination of these operations. Injurious defects shall be carefully avoided. The zirconium fittings shall be annealing heat treated. All welds shall be stress relief annealed within 14 days after welding to prevent delayed hydride cracking. Radiographic(X-Ray) inspection shall be performed on all weldments of the fittings in accordance with UW-51, ASME BPVC Section VIII.

Dimensional Standards for Zirconium Fittings

Generally, seamless or welded butt welding pipe fittings of zirconium & zirconium alloy shall be made to ASME B16.9 and MSS SP 43. It includes 45° and 90° elbows, 180° returns, caps, tees, reducers, lap-joint stub ends, crosses, and other types. The wall thicknesses of fittings shall be in accordance with ASME B36.19.

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Zirconium & Zirconium Alloy

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    Hebei Metals Industrial Limited
    (Shijiazhuang Metalsin Pipeline Tech Co., Ltd)
    No. 176, Zhonghua South Street, Shijiazhuang, China.
    Tel: +86-311-89642206