Unidus HK Cooperation

GR9 Titanium Seamless Pipe For Race Bike When trying to pick a material for a bike frame, there are many really important material considerations; weight, stiffness, strength, toughness, impact resistance, ride quality, corrosion. We'll discuss all of these issues in the context of choosing a bike. Permanent deflection Permanent deflection, or plastic deformation as it is also known, is much higher in Titanium than other materials and accounts for its fabled â??springâ??. This is why a Titanium ride is so much more comfortable than other frame building materials. Fatigue resistance The inherent flexibility and high tensile strength of Titanium allows the energy stresses of regular use to be effectively dissipated without degradation of the material, ensuring Titanium frames stay stronger for longer. Impact resistance The high tensile, or ultimate, strength and low elastic modulus of Titanium combine to create unparalleled impact resistance, meaning Titanium frames can soak up much harder punishment than frames built from other materials. Corrosion resistance Titanium's natural coating of Titanium Dioxide prevents it from oxidising in the atmosphere, so it will never rust, unlike steel, and, unlike aluminium, it will not corrode when exposed to acidic or alkaline environments. So aesthetic and performance quality will never be compromised by the weather. Strength to weight The tensile strength to density ratio for Titanium outstrips every other frame building metal. Simply put, for the same weight frame, Titanium will be twice as strong as steel and three times as strong as aluminium. Stiffness to weight Rigidity is essential for efficient power transfer and Titanium's stiffness to weight ratio is superior to all other metals. Titanium combines low weight for easy climbing, high rigidity for blistering performance in the sprint and the perfect balance of both to deliver Titanium's legendary ride quality. 3 AL/ 2.5 V All our frames are made from aerospace grade 3AL/2.5V Titanium, which contains 3% aluminium and 2.5% vanadium. This offers the perfect balance of strength and plasticity for use in thin-walled bicycle tubing. Titanium Use The 3Al/2.5V Titanium alloy we use was developed for use in high pressure hydraulic lines and is found on virtually all new military and commercial airplanes. Type of Tubing We use two types of tubing to make our frames: cold-worked, drawn, seamless tubing and seamless hydroformed butted. Both types of tubing create extremely strong, lightweight frames, but the seamless hydroformed butted tubing is even lighter and more durable. Only our very best bikes are made from this tubing.

Seamless Steel Tube: Seamless Steel Tube Used In Drilling Specification : OD20 - 108mm WT 1.5~20mm Aplication : Geological core drilling,Water well drilling,Hydrogeology drilling,Engineering geological drilling,Engineering drilling casing material. Technical features : Innovative system in cold rolling technology in production of seamless steel pipe used in drilling, the compactness of the higher and better toughness, can gretly improve the wear resistance of drillin gipe and resistance torque, make its service life longer. Hot Tags : 37Mn 5 Tube Drilling pipes

Welded Steel Tube: Drawn Over Mandrel Tubes Drawn Over Mandrel Tubes (DOM) Drawn Over Mandrel tubes according to tubing manufacturing standards like ASTM A513 type-5 & -6 or equivalent to meet customers requirements. Drawn over Mandrel (DOM) can be an ideal choice where a high degree of dimensional accuracy is required. Applications: - Hydraulic cylinders - Transmission shafts - Steering Columns - Suspension components - Camshafts - Axle Tubes - Drive Shafts - Jack Sleeves - Bushings Manufacturing procedure DOM steel tubing is manufactured from electrical resistance welded hollows and cold drawn through a die and over a mandrel, improving surface finish, mechanical properties and dimensional accuracy of both outside and inside diameters. DOM is a high-quality, cost-effective choice for demanding applications and machined parts because of its special characteristics: Combined with reliable weld integrity, Maximum concentricity, and Minimal wall variation. Advantages - Improved Dimensional Accuracy - Improved Physical Properties - Improved Surface Finish - Straightening, Complete Dimension, and Non-Destructive Inspection are Integral to the Process - Lower Machine Costs - Mass Savings in High Strength-to-Weight Ratio Applications Standards - ASTM A513 Type 5 - Drawn Over Mandrel (DOM) - ASTM A513 Type 6 - Drawn-Over Mandrel Special Smooth ID (SSID DOM)

Helically Wound High Fin Tubes 'L' Finned Tube å?¾ç??3.png The strip material is subjected to controlled deformation under tension giving the optimum contact pressure of the foot of the fin onto the base tube thus maximising the heat transfer properties. The foot of the fin considerably enhances the corrosion protection of the base tube. Maximum Working Temperature: 150â?? Atmospheric Corrosion Resistance: Acceptable Mechnical Resistance: Poor Fin Materials: Aluminum, Copper Tube Materials: No theoretical limits. 'LL' Finned Tube å?¾ç??3.png Manufactured in the same way as the 'L' fin type except that the fin foot is overlapped to completely enclose the base tube thereby giving excellent corrosion resistance. This type of tube is often used as an alternative to the more expensive extruded type fin in corrosive environments. Maximum Working Temperature: 180â?? Atmospheric Corrosion Resistance: Acceptable Mechnical Resistance: Poor Fin Materials: Aluminum, Copper Tube Materials: No theoretical limits. 'KL' Finned Tube å?¾ç??3.png Manufactured exactly as the 'L' fin except that the base tube is knurled before application of the fin foot. After application the fin foot is knurled into the corresponding knurling on the base tube thereby enhancing the bond between the fin and tube resulting in improved heat transfer characteristics. Maximum Working Temperature: 260â?? Atmospheric Corrosion Resistance: Acceptable Mechnical Resistance: Acceptable Fin Materials: Aluminum, Copper Tube Materials: No theoretical limits. 'G' Embedded Finned Tube å?¾ç??3.png (Embedded Fin)The fin strip is wound into a machined groove and securely locked into place by back filling with base tube material. This ensures that maximum heat transfer is maintained at high tube metal temperatures. Maximum Working Temperature: 450â?? Atmospheric Corrosion Resistance: Poor Mechnical Resistance: Acceptable Fin Materials: Aluminum, Copper, Carbon Steel Tube Materials: No theoretical limits. Extruded Finned Tube å?¾ç??3.png The strip material is subjected to controlled deformation under tension giving the optimum contact pressure of the foot of the fin onto the base tube thus maximising the heat transfer properties. The foot of the fin considerably enhances the corrosion protection of the base tube. Maximum Working Temperature: 150â?? Atmospheric Corrosion Resistance: Acceptable Mechnical Resistance: Poor Fin Materials: Aluminum, Copper Tube Materials: No theoretical limits.

U Bend And Finned Tube: ACC (aluminum clad copper) tube ACC tube has an outer layer of antirust 3003 aluminum alloy and inner layer of oxygen-free copper. The copper-aluminum interface achieves metals bonging among atoms, popular saying: metallurgy bonding. ACC tube combines the excellent moment decalescence capability of copper with the excellent heat-sinking capability of aluminum. Thus, ACC tube owns good heat-transmit performance, which can be widely applied in air conditioner, refrigeration, dehumidifier and so on. The heat exchanger, adopting ACC tube, completely eradicates the electrochemistry decays between copper tube and aluminum of traditional heat-exchanger. Greatly reduces the recession of energy efficiency ratio, provides key material for making long-effect air conditioner, and saves more than30% purchase cost for manufacturer. Over millions of air-conditioners have been put to market. Anti-corrosion and heat exchange performance can meet the requirements. NOTE : All index and parameters achieve related standards after testing the air-conditioner made by ACC tube, which has run for over 5 years. ACC tube basic performance ACC tube weight ratio : CU/AL30/70 Volume Ratio : CU/AL10/90 Tension strength : 115Mpa Elongation : 35% Expanding : 40% Density : 4.3

Nonferrous Metal Tube And Pipe: High-strengthen Color Aluminum Tube (CAT) is composed of 3003 aluminum and high-strengthen aluminum nuts. No corrosion after 500 hour's standard salt spray test. After the trail by many air conditioner factories, it can be regarded as the most safe and reliable substitute for pure copper tube and electric resistance welded pipe which can reach the performance of air conditioner with lowest cost.