... ,API. 3.pressure:class150~2500, 4.Type:WN,SO PL,BL,SW, we specialize in this field for 22 years. we ... 150~2500,PN2.5~400 Production: flangeType:WN/SO/PL/BL/TH/SW/LFMaterial:carbon steel:A105,Q235,ST37,P250GH,C22 ...
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