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天津双街钢管有限公司
Tianjin Shuangjie Steel Pipe Co., Ltd.
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ERW steel pipe
ASTM A53 GR B
ASTM A252 GR 2/ GR3
API 5L GR B / X70
AS/NZS 1163 C350 L0
JIS STK400 / STK500
EN10255
GB/T 3091-2015
GB/T 13793-2016
GB/T 9711-2017
Hot dipped galvanized steel pi
Grooved steel pipe
Threading steel pipe
ASTM A53 GR B
BS 1387
EN10255
JIS STK400 / STK500
GB/T 3091-2015
GB/T 13793-2016
GB/T 9711-2017
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