Detailed specifications of nuts 1. Nuts are nuts , which are screwed together with bolts or screws to play a fastening role. All production machinery must use an original . There are a wide variety of nuts , we have the common national standard , British standard , American standard Japanese subject nut nut according to different materials, divided into several types of carbon steel, high strength, stainless steel, steel, etc. is divided into ordinary, non-standard, (old) national standard, the new national standard based on different product attributes corresponding to the standard number, American system, English system, German standard. Different sizes, different thread into varying specifications GB general, represented by the German standard M (e.g. M8, M16), American, British specification indicates (e.g., # 8, # 10, 1/4, or a fraction # 3 /8 ) 2, the nut part is tightly connected to the mechanical equipment, by a screw inside of the same size nuts and screws, to connect together, for example, only the screw nut M4-0.7 M4-0.7 mix (in the nut, M4 The inner diameter of the nut is approximately 4mm , and 0.7 is the distance between the two thread teeth 0.7mm ); the same applies to the US product, for example, 1/4-20 nuts can only be used with 1/4-20 screws ( 1/4 The inner diameter of the finger nut is approximately 0.25 inches, and 20 fingers each have 20 teeth ). (Source: Pull rivet nut , ) Vulcanizing Press can be used to make rubber products, plastic products etc. Hydrofoming press is mainly suitable for the water swelling forming process of parts with complex surface morphology and high flow linearity. Anti-theft door embossing machine is an indispensable device for making doors. A press is a machine that uses liquid as a working medium and is based on the Pascal principle to transfer energy to achieve various processes. The hydraulic machine is generally composed of three parts: the machine (main unit), the power system and the hydraulic control system. Hydraulic machines are classified into valve hydraulic machines, liquid hydraulic machines, and engineering hydraulic machines. According to the direction of the force, the hydraulic machine has two types: vertical and horizontal. Most hydraulic presses are vertical, and hydraulic presses for extrusion use horizontal. According to the structure type, the hydraulic machine has two columns, four columns, eight columns, welded frame and multi-layer steel strip winding frame, and the medium and small vertical hydraulic machines are also C-frame type. The C-frame hydraulic press has three sides open for easy operation but poor rigidity. The welded frame hydraulic press for stamping has good rigidity and is open at the front and rear, but closed at the left and right. In the vertical four-column free forging hydraulic machine of the upper transmission, the cylinder is fixed in the upper beam, the plunger is rigidly connected with the movable beam, and the movable beam is guided by the column, and moves up and down under the pressure of the working fluid. There is a workbench on the beam that can move back and forth. An anvil and an anvil are respectively installed under the movable beam and on the work surface. The working force is supported by a frame composed of upper and lower beams and columns. Large and medium-sized free forging presses driven by pump-accumulators often use three working cylinders to achieve three-stage working force. There is also a working cylinder Customization Hydraulic Press,Customized Four Column Hydraulic Press,Hydraulic Door Frame Press Machine,Cnc Hydraulic Press Machine CHENGDU ZHENGXI HYDRAULIC EQUIPMENT MANUFACTURING CO., LTD. , http://www.zxhydraulic.com