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Hebei shengtian pipe-fitting group co.,ltd spectacle blank is designed and manufactured to securely blank off a piece of equipment with no flow or leakage through a valve during maintenance. The flow has to be valved off and pressure relieved before loosening flange bolts and swinging the blind. Our spectacle flanges are made by premium quality materials such as carbon steel, alloy, stainless steel and so on.
Flange Facing Types
As a spectacle blank manufacturer in China,Hebei shengtian pipe-fitting group co.,strives to provide the best quality butt weld fittings, industrial flanges, forged fittings and steel pipes for our global customers. Our products have received ISO9000, ISO14001, GB/T28001, Q/SY1002.1 certification, and are widely used in the United States, Chile, Bolivia, United Arab Emirates, Brazil, South Korea, and more.