... coupler We can also provide non-standard, hardware fittings, hose fitting,and other hydraulic coupler. hydraulic couplerOur company mainly produce hydraulic ... to peel a certain length of the external hose and inside hose,applied to the GB/T10544-89 standards,and ... the extral high pressure wire spiraled hose of SAER12,DIN20023-4SH standards . Hose joints and hose connectors forms :1,the entire ...