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Home / Products / Flange Union Crossover

Product

Flange Union Crossover

Forged adapter spool with API flange on one end and hammer union on the other for fast flange-to-union manifold tie-in.

flange-union-crossover product photo

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Quick answer

API 6A flange-to-hammer-union crossover spool in forged 4130 — straight or reducing, 3–20k PSI.

Key facts

  • Product type : Oilfield fitting
  • Application : Fracturing / cementing / wellhead
  • Country of origin : CN

Flange-union crossover (adapter sub) transitions API standard flanges to FIG hammer unions so flange piping can connect quickly to hammer-union HP manifolds without field pipe modification.

Fully forged and quenched-tempered 4130 for pressure and impact resistance. Straight or reducing bores; sour-service optional. Typical flanges 2-1/16", 2-1/8", 3-1/8" and more; unions FIG1002/1502/2002; pressure 3,000–20,000 PSI.

Widely used at wellheads connecting fracturing or choke manifolds and on mixed equipment sites.

Specifications

Material 4130 alloy steel, fully forged
Standard API 6A; NACE MR0175 optional
Working Pressure 3,000–20,000 PSI
Flange Sizes 2-1/16", 2-1/8", 3-1/8", etc.
Union Sizes FIG1002 / FIG1502 / FIG2002
Media Crude oil, fracturing fluid, mud, water
Application Fracturing, cementing, wellhead, choke & rig-floor manifolds

Features

  • One-piece forged 4130, heat treated
  • Direct flange ↔ hammer-union conversion
  • Precision-machined metal sealing faces
  • Straight and reducing customs
  • NACE sour-service option

STEINHART PETROLEUM PIPING

Steinhart Petroleum Piping (Hebei) Co., Ltd. supplies high-pressure oilfield fittings — hammer unions, manifolds, valves and skids — for fracturing, cementing and wellhead projects worldwide.

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Jing County
Hengshui, Hebei

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