China API L80 Pipe Coupling Manufacturer PipesTec Offers API L80 Coupling with parkerising and red painting surface treatment, 3.5 Inch, 9.2LB/FT.
China ASTM A536 Grooved Coupling Manufacturer PipesTec offers Ductile Iron Grooved Coupling, ASTM A536, Epoxy Painting, 80mm, BSPT/BSP/NPT Thread, UL/FM/CE.
China Hexagon Reducing Coupling Manufacturer PipesTec offers ASTM A182 F316 Hexagon Reducing Coupling, 3000LB, 3/4 Inch × 1/2 Inch, FNPT Ends.