The tariff classification of pipe assemblies both with and without valves attached from China
The tariff classification of seamless steel pipe from South Korea
The tariff classification of seamless line pipe from China
The tariff classification of pipes from Japan
Protest No. 5301-17-100216; Pluspetrol International, Inc.
The tariff classification of a pipe rack module from Canada
The tariff classification of clad steel line pipe from Germany.
The tariff classification and country of origin of clad steel line pipe