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· API5l Spiral Welded Steel Pipe [2017-06-02 HITS：3]
API5l Spiral Welded Steel Pipe [READ]

· ASTM A333 Seamless Carbon Steel Pipe [2017-06-01 HITS：4]
ASTM A333 Seamless Carbon Steel Pipe [READ]

· Stock principle requirements of ASTM A572 Gr. 50 Spiral Steel Pipes [2017-05-31 HITS：3]
Stock principle requirements of ASTM A572 Gr. 50 Spiral Steel Pipes [READ]

· ASTM A312 TP304 Stainless Seamless Steel Pipe for Oil [2017-05-27 HITS：4]
ASTM A312 TP304 Stainless Seamless Steel Pipe for Oil [READ]

· The price of ASTM A53 Welded steel pipe [2017-05-26 HITS：2]
The price of ASTM A53 Welded steel pipe [READ]

· ASTM A53 Seamless steel pipe [2017-05-25 HITS：0]
ASTM A53 Seamless steel pipe [READ]

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