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Spectacle Blank

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.

Spectacle blank: 1/2"~24"

American Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500

Flange Facing Types
European Series: Raised Face(RF), Ring Joints Face(RJ)

Carbon steel: A105
Alloy steel: A182 F 1-F 2-F 5-F 9-F 10-F 91-F 92-F 122-F 911-F 11-F 12-F 21-F 22
Stainless steel: A182 304-304H-304L-304N-304LN 316-316H-316L-316N-316LN 321-321H 347-347H
Low temperature steel: A522 A707 Grade L 1-L 2-L 3-L 4-L 5-L 6-L 7-L 8
High performance steel: A694 F 42-F 46-F 48-F 50-F 52-F 56-F 60-F 65-F 70

ASME B16.48-2005

Industrial Processes
Die forging, Machining

Industries Served
Electrical power, petroleum, natural gas, chemical, shipbuilding, heating, papermaking, metallurgy

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.
Ahad is located in Cangzhou of Hebei Province, 180 km from Beijing and 90 km from the major port city of Tianjin. Therefore, it is easy for us to acquire convenient transportation either by air, land, or sea, which lowers our production costs, and your freight charge.
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