Innovative, Technological, Environmental, International
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Utility model patent certificate-an assembly welding tool for curved pipes with flanges at both ends
Utility model patent certificate-an assembly welding tool for curved pipes with flanges at both ends -
Utility model patent certificate-a threaded joint for welding connection
Utility model patent certificate-a threaded joint for welding connection -
Utility model patent certificate-a pressing die for large spiral curved blades
Utility model patent certificate-a pressing die for large spiral curved blades -
Utility model patent certificate-a flanging tool for large pipe side wall holes
Utility model patent certificate-a flanging tool for large pipe side wall holes -
Utility model patent certificate-a liquid level observation mirror
Utility model patent certificate-a liquid level observation mirror -
Utility model patent certificate-an assembly welding tool for connecting pieces with rectangular flanges at both ends
Utility model patent certificate-an assembly welding tool for connecting pieces with rectangular flanges at both ends -
Utility model patent certificate-a fast and removable high-sealing hand hole cover assembly
Utility model patent certificate-a fast and removable high-sealing hand hole cover assembly -
Utility model patent certificate-a large vertical pump guide vane body blank with welding structure
Utility model patent certificate-a large vertical pump guide vane body blank with welding structure -
Utility model patent certificate-a tool for preventing welding deformation of pulp line pipe
Utility model patent certificate-a tool for preventing welding deformation of pulp line pipe -
Utility model patent certificate-a hole cover assembly for overhaul holes
Utility model patent certificate-a hole cover assembly for overhaul holes -
Utility model patent certificate-a twisting device for welding wire
Utility model patent certificate-a twisting device for welding wire -
Utility model patent certificate-a pipe joint tooling
Utility model patent certificate-a pipe joint tooling -
Utility model patent certificate-a multi-disc U-shaped groove plate drilling fixture
Utility model patent certificate-a multi-disc U-shaped groove plate drilling fixture -
Utility model patent certificate-a transport bracket for large bending plates
Utility model patent certificate-a transport bracket for large bending plates -
Utility model patent certificate-a transport rack for large tanks
Utility model patent certificate-a transport rack for large tanks -
Utility model patent certificate-a large-scale thin-walled simplified plastic tooling
Utility model patent certificate-a large-scale thin-walled simplified plastic tooling
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