... : J55,K55,N80,P110 3.Place of Origin: China stainless carbon steel Crossover coupling SPECIFICATIONSGrade: J55, K55, N80 1, N80Q, P110Use ... users, please visit our Suggestion CenterComments or suggestions about this page? Tell usShare Your Comments or SuggestionsPlease tell us how we ... other Alibaba.com users, please visit our Suggestion Center stainless carbon steel Crossover coupling