Import 5. Grooved Coupling & Fittings — Buy in Bulk from Supplier in South Korea (Republic Of Korea)

Histen's grooved coupling and fittings range covers sizes from 1 inch to 12 inch, manufactured in ductile iron castings to ASTM A536 and in stainless steel grades CF8 and CF8M. The ductile iron line is rated for 20 bar working pressure, while a high-pressure variant reaches 35 bar. The system uses a mechanical push-in joint with a profiled gasket that creates a step-by-step sealing effect as the coupling housing is tightened, eliminating the need for threading or welding during installation.

The one-push insertion method is designed to reduce assembly time compared with traditional flanged or threaded equivalents. The gasket profile is intended to conform progressively to the pipe surface under bolt torque, which the supplier claims prevents gasket deformation and downstream leakage. Ductile iron ASTM A536 provides minimum tensile strength of 60 ksi with yield strength of 40 ksi, while CF8 (304 equivalent) and CF8M (316 equivalent) stainless steels offer corrosion resistance for marine, chemical and potable water environments. These material standards are typical for grooved mechanical couplings in global fire protection and HVAC markets.

Primary applications are fire extinguishing pipelines and water supply networks, where rapid installation and future maintenance access are valued. The supplier states it is the only Korean manufacturer to hold UL approval for both ductile iron and stainless steel materials in this product category. Buyers in Southeast Asian and Middle Eastern markets often specify grooved systems for high-rise building risers and sprinkler mains. Importing from Gimhae, Gyeongsangnam-do, buyers should confirm dimensional tolerances, gasket elastomer grade, and whether UL listings cover the exact size and pressure class required.

Histen is headquartered at 113-79, Seobu-ro 1499beon-gil, Juchon-myeon, Gimhae-si, Gyeongsangnam-do, 50877, Republic of Korea. The supplier holds a harbor trust tier. The response rate is listed as 0.00 with zero average response hours, indicating that profile engagement metrics may not yet reflect active trading activity. Buyers should initiate direct contact to confirm current production schedules and export documentation capabilities.

The company highlights a unique position as the sole Korean manufacturer with UL approval for both ductile iron and stainless steel grooved coupling materials. No information is provided on year of establishment, production volume, employee count, or client project references. The listing emphasises a reduction in construction time by a factor of four compared with basic products, though the baseline for this comparison is not defined. Buyers should request factory audit reports, quality management system certification, and evidence of UL listing scope to validate these claims.