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API 5CT K55-N80 SMLS CASING SEAMLESS STEEL PIPE
5YRSTianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd.
API 5L ASTM A53 ASTM A106 SEAMLESS CARBON STEEL PIPE
5YRSTianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd.
Seamless Pipe Manufacturing to Produce Seamless Steel Tube with Different Seamless Tube Sizes
7YRSTianjin Youfa International Trade Co., Ltd.
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