Shanghai Beall Metal Co.,Limited as a professional Invar/Kovar Tube manufacturer and supplier in China, all the Invar/Kovar Tube have passed the international industry certification standards, and you can be completely assured of quality. If you do not find your own Intent Invar/Kovar Tube in our product list, you can also contact us, we can provide customized services.
Over 25 years of steel experience, we offer a full size range and vary standard of steel pipe, OCTG&line pipe, pipe fittings and flange, valve and gasket, bolts and nuts and scaffolding products for projects around the world.
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