Flanges, elbows and other pipe fittings (building materials, pipes, steels) are either, or are, independent of the invoice value added tax
Strictly speaking, does not belong to any kind of, because both building materials and pipes belong to steel products. Must be placed under a category, can be classified into the pipe, because the elbow and pipe fittings are processed into pipes. Hope to adopt.
Generally fill in the flange bend directly, you can also fill in the pipe accessories.
General flange elbow can also directly fill in, fill in the pipeline accessories, because bends and fittings are processed into pipe, an elbow flange belongs to fittings, building materials including pipe fittings, steel pipe fittings fittings is also included, including elbow, flange, tee, pipe cap, etc. fittings strictly in VAT invoices the above should be written on the flange, elbow, and I hope to help you.
