Hebei huayu special rubber co., ltd. is professional manufacturer in producing firefighting couplings, such as storz couplings, gost & rotta couplings, nor couplings, finnish couplings, barcelona couplings and british instantaneous couplings. now we mainly produce storz couplings. storz fire fighting couplings include storz suction hose coupling, storz female thread, storz male thread, storz blind cap with chain and so on. material could be aluminum, stainless steel or brass. storz fire fighting couplings have the same head structure, not distinguish male and female threads. when assembly, heads with the same lug distance can be buckled together, which is convenient and fast. they can be applied in connecting firefighting hose, pvc pipe and other low pressure pipes. if you have the demand, please contact us via sales@storz-coupling.com