Input-output norms for steel pipes and bends require CIF value limits on ancillary imports and usage compliance. Input-output norms prescribe permitted inputs and per-unit consumption for manufacture of welded steel pipes and hot-formed bends meeting API/ASTM or equivalent grades, list core raw materials and ancillary inputs with specified quantities, impose a CIF value cap on certain ancillary items relative to export FOB value, allow an additional X-ray tube for very large orders, and require verification that imported inputs are those actually used in the export product.