SAE FLANGE 3000PSI CODE 61 FLANGE ISO 12151-3 SAE J516-87311 High pressure Hydraulic fitting flange 3000 psi Straight 87311 & 87312 Used for the steel wire braided hoses and steel wire spiral hoses SAE CODE 61 HIGH PRESSURE SAE HYDRAULIC FLANGE FITTING 3000PSI 87311 & 87312 Brand: SINOPULSE or OEM Material : Carbon steel 45# Surface treatment: Zinc plating Application: 87311 used for the steel wire braided hydraulic hose 1SN 2SN , R1AT, R2AT 87312 used for the steel wire spiral hydraulic hose, 4SP. 4SH, R12, R13& R15