HAHN+KOLB hose connector Germany HAHN+KOLB model HAHN+KOLB price

HAHN+KOLB hose connectors are connection tools between pipes and are detachable connection points between components and pipes. Main pipe fittings come in a wide variety; commonly used pipe fittings are generally divided into rigid pipe fittings and hose fittings. Rigid pipe fittings include flared, compression, and welded types, while hose fittings are mainly crimped rubber hose fittings. A compression pipe fitting consists of three parts: the fitting body, the ferrule, and the nut. When the ferrule and nut are placed on the steel pipe and inserted into the fitting body, tightening the nut causes the outer side of the ferrule's front end to fit against the conical surface of the fitting body, and the inner cutting edge uniformly bites into the seamless steel pipe, forming an effective seal. It is a sealed pipe fitting suitable for non-corrosive or corrosive media such as oil, water, and gas. The specification requirements for aluminum-plastic pipes are relatively flexible. After connection with the pipeline, it features reliable connection and good sealing performance.

HAHN+KOLB hose connector installation

Cut the pipe to the required length using a sawing machine or specialized pipe cutting equipment; flame cutting (such as flame cutting) or grinding wheel cutting is strictly prohibited. Remove burrs from the inside and outside of the pipe end, metal chips, and dirt; remove rust preventive agents and dirt from the pipe fitting; also ensure the roundness of the pipe. Slide the nut and ferrule onto the pipe in sequence. The front cutting edge (small diameter end) of the ferrule must be at least 3mm away from the pipe end. Then insert the pipe into the conical hole of the fitting body until it bottoms out. Slowly tighten the nut while rotating the pipe until it no longer moves, then tighten the nut another 2/3 to 4/3 turns. Disassemble to check whether the ferrule has cut into the pipe and if the position is correct. The ferrule must not have axial movement but may rotate slightly. After passing inspection, retighten the nut.

HAHN+KOLB hose connector classification

Classification by pipe diameter size: For equal-diameter tees, the connecting ends are all the same size; for reducing tees, the main pipe connecting ends are the same size, while the branch pipe connecting ends are smaller than the main pipe connecting ends. Classification by process: 1. Hydraulic bulging: Hydraulic bulging of tees is a forming process where the branch pipe is bulged out through axial compensation of the metal material. The process involves using a specialized hydraulic press to inject liquid into a pipe blank with a diameter equal to that of the tee. Two horizontal side cylinders of the hydraulic press move synchronously to compress the pipe blank. As the pipe blank is compressed, its volume decreases, causing the pressure of the liquid inside to rise. When the pressure required to bulge out the branch pipe is reached, the metal material flows along the mold cavity under the dual action of the side cylinders and the internal liquid pressure, bulging out the branch pipe. The hydraulic bulging process for tees can be formed in one step with high production efficiency; the wall thickness of the main pipe and shoulder of the tee increases. Since the hydraulic bulging process for seamless tees requires equipment with large tonnage, it is mainly used domestically for manufacturing standard wall thickness tees smaller than DN400. Suitable forming materials include low-carbon steel, low-alloy steel, and stainless steel with relatively low tendencies for work hardening, as well as some non-ferrous metals such as copper, aluminum, and titanium. 2. Hot pressing forming: Hot pressing forming of tees involves flattening a pipe blank larger than the tee diameter to approximately the tee diameter size, and opening a hole at the branch pipe stretching location. The pipe blank is heated, placed into a forming mold, and a punch for stretching the branch pipe is inserted into the pipe blank. Under pressure, the pipe blank is radially compressed. During radial compression, metal flows toward the branch pipe direction and forms the branch pipe under the stretching of the punch. The entire process forms the shape through radial compression of the pipe blank and stretching of the branch pipe area. Unlike hydraulic bulged tees, the metal for the branch pipe of hot-pressed tees is compensated by the radial movement of the pipe blank, so it is also called the radial compensation process. Since the tee is pressed after heating, the equipment tonnage required for material forming is reduced. Hot-pressed tees have wide adaptability to materials, suitable for low-carbon steel, alloy steel, and stainless steel; especially for large-diameter tees with thicker walls, this forming process is usually adopted. Classification by material: carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-chromium-nickel, pvc, etc. Classification by manufacturing method: top-made, pressed, forged, cast, etc.

HAHN+KOLB hose connector classification

Classification by function: reducers, sleeve fittings, reducing fittings, 90° elbows, 45° elbows, tee fittings, reducing tee fittings, cross fittings, reducing cross fittings, union joints (valve conversion fittings), flanges, pipe clamps, etc.; Classification by connection method: socket welding, threaded connection, flange connection, etc.; Classification by material: red copper, brass, bronze, etc.; Classification by application: water pipe fittings, air conditioning pipe fittings, refrigeration pipe fittings, equipment fittings, wire and cable fittings.

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