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astm a106 a53 api 5l seamless steel pipe carbon seamless steel pipe
8YRSTianjin Youfa International Trade Co Ltd
Dimensions 55x55 square tubing square tube per ton steel square tube
8YRSTianjin Youfa International Trade Co Ltd
High Pressure Butt Fusion Machine V630SHP 315MM-630MM (12" IPS -24" IPS)
6YRSRiyang Fusion Manufacturing Limited
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