we offer consistent product quality that comes controlling the entire steelmaking process,from steel melting to finished tube.
Sizes: ANSI / ASME B36.10, other sizes ASME B36.19
Other dimensions are available on request.
Tolerance NPSO.D. mmmmWT Remark 1/4" - 1 1/2"13,7 - 48,3+0,4 / -0,8+20 / -12,5% -(1 1/2") - 2 1/2"(48,3) - 73± 0,8+20 / -12,5% (2 1/2") - 4"(73) - 114,3± 0,8+15 / -12,5% Valid for WT/O.D. > 0,05; if WtTO.D. =< 0,05:+22,5/-12,5%. (4") - 8"(114.3) - 219,1+1,6 / -0,8+15 / -12,5% Valid for WT/O.D. > 0,05; if WT/O.D. =< 0,05:+22,5/-12,5%.
Standards for seamless tube
ASTM A 312 Corrosion test ASTM A262 Practice E. NACE MR-0175/ISO 15156
ASTM A 790 / A999, Corrosion test ASTM G 48 practice method A.
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