API 5L GR.B/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL PIPE ...
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API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE) ...
API 5L/ASTM A53 GR.B, CARBON STEEL, SSAW STEEL PIPE ...
API 5L/ASTM A106 GR.B, Seamless Carbon Steel Pipe 公...
API 5L GR.B/ASTM A53 GR.B, CARBON STEEL, LSAW STEEL PIPE ...
API 5L/ASTM A53 GR.B (Small Diameter ERW Steel Pipe) ...
API 5L/ASTM A53 GR.B (Hot Rolled ERW Steel Pipe) Ou...
API 5L GR.B/ASTM A53 GR.B (HOT EXPANDED ERW STEEL PIPE) ...
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