... 1)API 7K,ISO6807,GOST28618 2)Transport water/oil base mud 3)Inner diameter:38-127mm(1.5-5") 4 ... drilling,cementing, work over service as flexible connection for mud manifold, cement manifold,choke and kill manifold to transport ... water base mud or oil base mud, washing fluid at high pressure in large ... ., Ltd.Founded in 1993. API 7K High Pressure mud and cement hose