Product Description：

Protect the flange from external moisture and atmospheric corrosion, grease injection at the nozzle, rubber seals in the flange band to isolate corrosion-inducing moisture and atmosphere, single air venting and draining device and silicone bolt cover with air venting corrosion protection can be added,suitable for highly corrosive factories, natural gas pipelines and offshore platforms, etc. with H2S.

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