TU 24.20.21-008-01395041-2024 DN 500 to DN 1400 mm of low-alloy and alloy steel with wall thickness from 8.0 mm to 32.2 mm category C for working pressure up to 7.5 MPa, category D up to 10.0 MPa, category E up to 11.8 MPa are designed for pipeline manufacturing by means of electric arc welding. EAEC HS code 7305 11 0008
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