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Certification:GB/T 19001-2008 , ISO 9001:2008 , TS16949 EN10297-1 E235 , E275 , E315...
New product piping and plumbing fitting Sucker Rod COUPLING pipe joint coupling Prod...
British standard pipe raccord npt threaded pipe fittings Product Name British stand...
DIN 17175 15Mo3,13CrMo44 alloy steel pipe Liaocheng HONGJU STEEL PIPE Co.,Ltd MR ...
ASTM A335 P91 Seamless alloy steel pipe Liaocheng HONGJU STEEL PIPE Co.,Ltd MR Sy...