Piston Cup Holder for FMC BEAN L1122/W1122/L1622 (SKU:A91653), forged from ASTM A354 BD alloy steel, quenched+tempered (HRC32-36) with phosphating surface treatment. API 7K compliant, tensile strength ≥150ksi, salt spray tested 1000h corrosion-free for high-pressure piston cup sealing stability.
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