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Company profile

JST has passed ISO9001 quality management system certification, API Q1 system certification and HSE system certification. JST is dedicated to innovation, and has developed over 40 patented products and counting.

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Standard size hammer union seal

Hammer Union Seals are used in hammer union-style pipe connections to establish flow lines and prevent leakage. It is widely used in the oil & gas industry.

High pressure swivel joint ball plug

Swivel joint ball plug is working together with hammer union seals, to seal the balls of high pressure elbows and grease.

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