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2007
Yantai Qingzhou Steel Pipe Sales Co., Ltd.
Seamless Steel Pipe API 5L X42
3PE OR FBE Coating Line Pipe (API 5L GR.B, X42, X46, X52, X53, X60, X65, X70)
Galvanized Seamless Steel Pipe ASTM A106/A53/API 5L GR.B
Seamless Steel Pipe For Low-Temperature Service ASTM A333
Seamless Steel Pipe ASTM A53 GR.B
Seamless Steel Pipe ASTM A106 GR.B
Seamless Steel Pipe API 5L GR.B