Hot Rolling Precision Cold-Drawing 133*5mm GB/T8163/5310/3087/9948/6479 ASTM A106 A53 API-5L Round/Hollow/Galvanized/Black/Carbon/Alloy Seamless Steel Pipe/Tube
Hot Rolling Precision Cold-Drawing 89*4.5mm GB/T8163/5310/3087/9948/6479ASTM A106 A53 API-5L Round/Hollow/Galvanized/Black/Carbon/Alloy Seamless Steel Pipe/Tube
Galvanized Hot Rolling Precision Cold-Drawing 89*4mm GB/T8163/5310/3087/9948/6479 ASTM A106 A53 API-5L Round/Hollow/Carbon/Alloy Seamless Steel Pipe/Tube
Hot Rolling Precision Cold-Drawing102*4mm GB/T8163/5310/3087/9948/6479 ASTM A106 A53 API-5L Round/Hollow/Galvanized/Black/Carbon/Alloy Seamless Steel Pipe/Tube
Hot Rolling Precision Cold-Drawing114*4mm GB/T8163/5310/3087/9948/6479 ASTM A106 A53 API-5L Round/Hollow/Galvanized/Black/Carbon/Alloy Seamless Steel Pipe/Tube
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